Merge "Reland "TextureView Vulkan support and optimized OpenGL draw""

47 files changed, 2459 insertions, 2169 deletions

diff --git a/libs/hwui/Android.bp b/libs/hwui/Android.bp
index edce3050255b..2baacbf541dc 100644
--- a/libs/hwui/Android.bp
+++ b/libs/hwui/Android.bp
@@ -176,9 +176,7 @@ cc_defaults {
         "pipeline/skia/SkiaRecordingCanvas.cpp",
         "pipeline/skia/SkiaVulkanPipeline.cpp",
         "pipeline/skia/VectorDrawableAtlas.cpp",
-        "renderstate/PixelBufferState.cpp",
         "renderstate/RenderState.cpp",
-        "renderstate/TextureState.cpp",
         "renderthread/CacheManager.cpp",
         "renderthread/CanvasContext.cpp",
         "renderthread/DrawFrameTask.cpp",
@@ -190,6 +188,9 @@ cc_defaults {
         "renderthread/TimeLord.cpp",
         "renderthread/Frame.cpp",
         "service/GraphicsStatsService.cpp",
+        "surfacetexture/EGLConsumer.cpp",
+        "surfacetexture/ImageConsumer.cpp",
+        "surfacetexture/SurfaceTexture.cpp",
         "thread/TaskManager.cpp",
         "utils/Blur.cpp",
         "utils/Color.cpp",
@@ -201,7 +202,6 @@ cc_defaults {
         "AnimationContext.cpp",
         "Animator.cpp",
         "AnimatorManager.cpp",
-        "Caches.cpp",
         "CanvasState.cpp",
         "CanvasTransform.cpp",
         "ClipArea.cpp",
@@ -210,7 +210,6 @@ cc_defaults {
         "DeviceInfo.cpp",
         "FrameInfo.cpp",
         "FrameInfoVisualizer.cpp",
-        "GlLayer.cpp",
         "GpuMemoryTracker.cpp",
         "HardwareBitmapUploader.cpp",
         "Interpolator.cpp",
@@ -220,7 +219,6 @@ cc_defaults {
         "Matrix.cpp",
         "EglReadback.cpp",
         "PathParser.cpp",
-        "PixelBuffer.cpp",
         "ProfileData.cpp",
         "ProfileDataContainer.cpp",
         "Properties.cpp",
@@ -232,9 +230,7 @@ cc_defaults {
         "ResourceCache.cpp",
         "SkiaCanvas.cpp",
         "Snapshot.cpp",
-        "Texture.cpp",
         "VectorDrawable.cpp",
-        "VkLayer.cpp",
         "protos/graphicsstats.proto",
     ],
 
diff --git a/libs/hwui/Caches.cpp b/libs/hwui/Caches.cpp
deleted file mode 100644
index 254144448859..000000000000
--- a/libs/hwui/Caches.cpp
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "Caches.h"
-
-#include "GlLayer.h"
-#include "Properties.h"
-#include "renderstate/RenderState.h"
-#include "utils/GLUtils.h"
-
-#include <cutils/properties.h>
-#include <utils/Log.h>
-#include <utils/String8.h>
-
-namespace android {
-namespace uirenderer {
-
-Caches* Caches::sInstance = nullptr;
-
-///////////////////////////////////////////////////////////////////////////////
-// Macros
-///////////////////////////////////////////////////////////////////////////////
-
-#if DEBUG_CACHE_FLUSH
-#define FLUSH_LOGD(...) ALOGD(__VA_ARGS__)
-#else
-#define FLUSH_LOGD(...)
-#endif
-
-///////////////////////////////////////////////////////////////////////////////
-// Constructors/destructor
-///////////////////////////////////////////////////////////////////////////////
-
-Caches::Caches(RenderState& renderState) : mInitialized(false) {
-    INIT_LOGD("Creating OpenGL renderer caches");
-    init();
-    initStaticProperties();
-}
-
-bool Caches::init() {
-    if (mInitialized) return false;
-
-    ATRACE_NAME("Caches::init");
-
-    mRegionMesh = nullptr;
-
-    mInitialized = true;
-
-    mPixelBufferState = new PixelBufferState();
-    mTextureState = new TextureState();
-    mTextureState->constructTexture(*this);
-
-    return true;
-}
-
-void Caches::initStaticProperties() {
-    // OpenGL ES 3.0+ specific features
-    gpuPixelBuffersEnabled = extensions().hasPixelBufferObjects() &&
-                             property_get_bool(PROPERTY_ENABLE_GPU_PIXEL_BUFFERS, true);
-}
-
-void Caches::terminate() {
-    if (!mInitialized) return;
-    mRegionMesh.reset(nullptr);
-
-    clearGarbage();
-
-    delete mPixelBufferState;
-    mPixelBufferState = nullptr;
-    delete mTextureState;
-    mTextureState = nullptr;
-    mInitialized = false;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// Memory management
-///////////////////////////////////////////////////////////////////////////////
-
-void Caches::clearGarbage() {}
-
-void Caches::flush(FlushMode mode) {
-    clearGarbage();
-    glFinish();
-    // Errors during cleanup should be considered non-fatal, dump them and
-    // and move on. TODO: All errors or just errors like bad surface?
-    GLUtils::dumpGLErrors();
-}
-
-};  // namespace uirenderer
-};  // namespace android
diff --git a/libs/hwui/Caches.h b/libs/hwui/Caches.h
deleted file mode 100644
index 642f9dc50eb1..000000000000
--- a/libs/hwui/Caches.h
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include "DeviceInfo.h"
-#include "Extensions.h"
-#include "ResourceCache.h"
-#include "renderstate/PixelBufferState.h"
-#include "renderstate/TextureState.h"
-#include "thread/TaskManager.h"
-#include "thread/TaskProcessor.h"
-
-#include <memory>
-#include <vector>
-
-#include <GLES3/gl3.h>
-
-#include <utils/KeyedVector.h>
-
-#include <cutils/compiler.h>
-
-#include <SkPath.h>
-
-#include <vector>
-
-namespace android {
-namespace uirenderer {
-
-///////////////////////////////////////////////////////////////////////////////
-// Caches
-///////////////////////////////////////////////////////////////////////////////
-
-class RenderNode;
-class RenderState;
-
-class ANDROID_API Caches {
-public:
-    static Caches& createInstance(RenderState& renderState) {
-        LOG_ALWAYS_FATAL_IF(sInstance, "double create of Caches attempted");
-        sInstance = new Caches(renderState);
-        return *sInstance;
-    }
-
-    static Caches& getInstance() {
-        LOG_ALWAYS_FATAL_IF(!sInstance, "instance not yet created");
-        return *sInstance;
-    }
-
-    static bool hasInstance() { return sInstance != nullptr; }
-
-private:
-    explicit Caches(RenderState& renderState);
-    static Caches* sInstance;
-
-public:
-    enum class FlushMode { Layers = 0, Moderate, Full };
-
-    /**
-     * Initialize caches.
-     */
-    bool init();
-
-    bool isInitialized() { return mInitialized; }
-
-    /**
-     * Flush the cache.
-     *
-     * @param mode Indicates how much of the cache should be flushed
-     */
-    void flush(FlushMode mode);
-
-    /**
-     * Destroys all resources associated with this cache. This should
-     * be called after a flush(FlushMode::Full).
-     */
-    void terminate();
-
-    /**
-     * Call this on each frame to ensure that garbage is deleted from
-     * GPU memory.
-     */
-    void clearGarbage();
-
-    /**
-     * Returns the GL RGBA internal format to use for the current device
-     * If the device supports linear blending and needSRGB is true,
-     * this function returns GL_SRGB8_ALPHA8, otherwise it returns GL_RGBA
-     */
-    constexpr GLint rgbaInternalFormat(bool needSRGB = true) const {
-        return extensions().hasLinearBlending() && needSRGB ? GL_SRGB8_ALPHA8 : GL_RGBA;
-    }
-
-public:
-    TaskManager tasks;
-
-    bool gpuPixelBuffersEnabled;
-
-    const Extensions& extensions() const { return DeviceInfo::get()->extensions(); }
-    PixelBufferState& pixelBufferState() { return *mPixelBufferState; }
-    TextureState& textureState() { return *mTextureState; }
-
-private:
-    void initStaticProperties();
-
-    static void eventMarkNull(GLsizei length, const GLchar* marker) {}
-    static void startMarkNull(GLsizei length, const GLchar* marker) {}
-    static void endMarkNull() {}
-
-    // Used to render layers
-    std::unique_ptr<TextureVertex[]> mRegionMesh;
-
-    bool mInitialized;
-
-    // TODO: move below to RenderState
-    PixelBufferState* mPixelBufferState = nullptr;
-    TextureState* mTextureState = nullptr;
-
-};  // class Caches
-
-};  // namespace uirenderer
-};  // namespace android
diff --git a/libs/hwui/DeferredLayerUpdater.cpp b/libs/hwui/DeferredLayerUpdater.cpp
index 569de76f294e..00916559a9c2 100644
--- a/libs/hwui/DeferredLayerUpdater.cpp
+++ b/libs/hwui/DeferredLayerUpdater.cpp
@@ -15,27 +15,20 @@
  */
 #include "DeferredLayerUpdater.h"
 
-#include "GlLayer.h"
-#include "VkLayer.h"
 #include "renderstate/RenderState.h"
-#include "renderthread/EglManager.h"
-#include "renderthread/RenderTask.h"
 #include "utils/PaintUtils.h"
 
 namespace android {
 namespace uirenderer {
 
-DeferredLayerUpdater::DeferredLayerUpdater(RenderState& renderState, CreateLayerFn createLayerFn,
-                                           Layer::Api layerApi)
+DeferredLayerUpdater::DeferredLayerUpdater(RenderState& renderState)
         : mRenderState(renderState)
         , mBlend(false)
         , mSurfaceTexture(nullptr)
         , mTransform(nullptr)
         , mGLContextAttached(false)
         , mUpdateTexImage(false)
-        , mLayer(nullptr)
-        , mLayerApi(layerApi)
-        , mCreateLayerFn(createLayerFn) {
+        , mLayer(nullptr) {
     renderState.registerDeferredLayerUpdater(this);
 }
 
@@ -50,13 +43,9 @@ void DeferredLayerUpdater::destroyLayer() {
         return;
     }
 
-    if (mSurfaceTexture.get() && mLayerApi == Layer::Api::OpenGL && mGLContextAttached) {
-        status_t err = mSurfaceTexture->detachFromContext();
+    if (mSurfaceTexture.get() && mGLContextAttached) {
+        mSurfaceTexture->detachFromView();
         mGLContextAttached = false;
-        if (err != 0) {
-            // TODO: Elevate to fatal exception
-            ALOGE("Failed to detach SurfaceTexture from context %d", err);
-        }
     }
 
     mLayer->postDecStrong();
@@ -75,99 +64,53 @@ void DeferredLayerUpdater::setPaint(const SkPaint* paint) {
 
 void DeferredLayerUpdater::apply() {
     if (!mLayer) {
-        mLayer = mCreateLayerFn(mRenderState, mWidth, mHeight, mColorFilter, mAlpha, mMode, mBlend);
+        mLayer = new Layer(mRenderState, mColorFilter, mAlpha, mMode);
     }
 
     mLayer->setColorFilter(mColorFilter);
     mLayer->setAlpha(mAlpha, mMode);
 
     if (mSurfaceTexture.get()) {
-        if (mLayer->getApi() == Layer::Api::Vulkan) {
-            if (mUpdateTexImage) {
-                mUpdateTexImage = false;
-                doUpdateVkTexImage();
-            }
-        } else {
-            LOG_ALWAYS_FATAL_IF(mLayer->getApi() != Layer::Api::OpenGL,
-                                "apply surfaceTexture with non GL backend %x, GL %x, VK %x",
-                                mLayer->getApi(), Layer::Api::OpenGL, Layer::Api::Vulkan);
-            if (!mGLContextAttached) {
-                mGLContextAttached = true;
-                mUpdateTexImage = true;
-                mSurfaceTexture->attachToContext(static_cast<GlLayer*>(mLayer)->getTextureId());
-            }
-            if (mUpdateTexImage) {
-                mUpdateTexImage = false;
-                doUpdateTexImage();
+        if (!mGLContextAttached) {
+            mGLContextAttached = true;
+            mUpdateTexImage = true;
+            mSurfaceTexture->attachToView();
+        }
+        if (mUpdateTexImage) {
+            mUpdateTexImage = false;
+            sk_sp<SkImage> layerImage;
+            SkMatrix textureTransform;
+            android_dataspace dataSpace;
+            bool queueEmpty = true;
+            // If the SurfaceTexture queue is in synchronous mode, need to discard all
+            // but latest frame. Since we can't tell which mode it is in,
+            // do this unconditionally.
+            do {
+                layerImage = mSurfaceTexture->dequeueImage(textureTransform, dataSpace, &queueEmpty,
+                        mRenderState);
+            } while (layerImage.get() && (!queueEmpty));
+            if (layerImage.get()) {
+                // force filtration if buffer size != layer size
+                bool forceFilter = mWidth != layerImage->width() || mHeight != layerImage->height();
+                updateLayer(forceFilter, textureTransform, dataSpace, layerImage);
             }
-            GLenum renderTarget = mSurfaceTexture->getCurrentTextureTarget();
-            static_cast<GlLayer*>(mLayer)->setRenderTarget(renderTarget);
         }
+
         if (mTransform) {
-            mLayer->getTransform().load(*mTransform);
+            mLayer->getTransform() = *mTransform;
             setTransform(nullptr);
         }
     }
 }
 
-void DeferredLayerUpdater::doUpdateTexImage() {
-    LOG_ALWAYS_FATAL_IF(mLayer->getApi() != Layer::Api::OpenGL,
-                        "doUpdateTexImage non GL backend %x, GL %x, VK %x", mLayer->getApi(),
-                        Layer::Api::OpenGL, Layer::Api::Vulkan);
-    if (mSurfaceTexture->updateTexImage() == NO_ERROR) {
-        float transform[16];
-
-        int64_t frameNumber = mSurfaceTexture->getFrameNumber();
-        // If the GLConsumer queue is in synchronous mode, need to discard all
-        // but latest frame, using the frame number to tell when we no longer
-        // have newer frames to target. Since we can't tell which mode it is in,
-        // do this unconditionally.
-        int dropCounter = 0;
-        while (mSurfaceTexture->updateTexImage() == NO_ERROR) {
-            int64_t newFrameNumber = mSurfaceTexture->getFrameNumber();
-            if (newFrameNumber == frameNumber) break;
-            frameNumber = newFrameNumber;
-            dropCounter++;
-        }
-
-        bool forceFilter = false;
-        sp<GraphicBuffer> buffer = mSurfaceTexture->getCurrentBuffer();
-        if (buffer != nullptr) {
-            // force filtration if buffer size != layer size
-            forceFilter = mWidth != static_cast<int>(buffer->getWidth()) ||
-                          mHeight != static_cast<int>(buffer->getHeight());
-        }
-
-#if DEBUG_RENDERER
-        if (dropCounter > 0) {
-            RENDERER_LOGD("Dropped %d frames on texture layer update", dropCounter);
-        }
-#endif
-        mSurfaceTexture->getTransformMatrix(transform);
-
-        updateLayer(forceFilter, transform, mSurfaceTexture->getCurrentDataSpace());
-    }
-}
-
-void DeferredLayerUpdater::doUpdateVkTexImage() {
-    LOG_ALWAYS_FATAL_IF(mLayer->getApi() != Layer::Api::Vulkan,
-                        "updateLayer non Vulkan backend %x, GL %x, VK %x", mLayer->getApi(),
-                        Layer::Api::OpenGL, Layer::Api::Vulkan);
-
-    static const mat4 identityMatrix;
-    updateLayer(false, identityMatrix.data, HAL_DATASPACE_UNKNOWN);
-
-    VkLayer* vkLayer = static_cast<VkLayer*>(mLayer);
-    vkLayer->updateTexture();
-}
-
-void DeferredLayerUpdater::updateLayer(bool forceFilter, const float* textureTransform,
-                                       android_dataspace dataspace) {
+void DeferredLayerUpdater::updateLayer(bool forceFilter, const SkMatrix& textureTransform,
+        android_dataspace dataspace, const sk_sp<SkImage>& layerImage) {
     mLayer->setBlend(mBlend);
     mLayer->setForceFilter(forceFilter);
     mLayer->setSize(mWidth, mHeight);
-    mLayer->getTexTransform().load(textureTransform);
+    mLayer->getTexTransform() = textureTransform;
     mLayer->setDataSpace(dataspace);
+    mLayer->setImage(layerImage);
 }
 
 void DeferredLayerUpdater::detachSurfaceTexture() {
diff --git a/libs/hwui/DeferredLayerUpdater.h b/libs/hwui/DeferredLayerUpdater.h
index fe3ee7a2b4c6..4c323b861002 100644
--- a/libs/hwui/DeferredLayerUpdater.h
+++ b/libs/hwui/DeferredLayerUpdater.h
@@ -17,18 +17,19 @@
 #pragma once
 
 #include <SkColorFilter.h>
+#include <SkImage.h>
 #include <SkMatrix.h>
 #include <cutils/compiler.h>
-#include <gui/GLConsumer.h>
+#include <map>
 #include <system/graphics.h>
 #include <utils/StrongPointer.h>
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 
+#include "surfacetexture/SurfaceTexture.h"
 #include "Layer.h"
 #include "Rect.h"
-#include "renderthread/RenderThread.h"
 
 namespace android {
 namespace uirenderer {
@@ -41,12 +42,7 @@ class DeferredLayerUpdater : public VirtualLightRefBase {
 public:
     // Note that DeferredLayerUpdater assumes it is taking ownership of the layer
     // and will not call incrementRef on it as a result.
-    typedef std::function<Layer*(RenderState& renderState, uint32_t layerWidth,
-                                 uint32_t layerHeight, sk_sp<SkColorFilter> colorFilter, int alpha,
-                                 SkBlendMode mode, bool blend)>
-            CreateLayerFn;
-    ANDROID_API explicit DeferredLayerUpdater(RenderState& renderState, CreateLayerFn createLayerFn,
-                                              Layer::Api layerApi);
+    ANDROID_API explicit DeferredLayerUpdater(RenderState& renderState);
 
     ANDROID_API ~DeferredLayerUpdater();
 
@@ -70,13 +66,13 @@ public:
         return false;
     }
 
-    ANDROID_API void setSurfaceTexture(const sp<GLConsumer>& texture) {
-        if (texture.get() != mSurfaceTexture.get()) {
-            mSurfaceTexture = texture;
+    ANDROID_API void setSurfaceTexture(const sp<SurfaceTexture>& consumer) {
+        if (consumer.get() != mSurfaceTexture.get()) {
+            mSurfaceTexture = consumer;
 
-            GLenum target = texture->getCurrentTextureTarget();
+            GLenum target = consumer->getCurrentTextureTarget();
             LOG_ALWAYS_FATAL_IF(target != GL_TEXTURE_2D && target != GL_TEXTURE_EXTERNAL_OES,
-                                "set unsupported GLConsumer with target %x", target);
+                                "set unsupported SurfaceTexture with target %x", target);
         }
     }
 
@@ -97,12 +93,11 @@ public:
 
     void detachSurfaceTexture();
 
-    void updateLayer(bool forceFilter, const float* textureTransform, android_dataspace dataspace);
+    void updateLayer(bool forceFilter, const SkMatrix& textureTransform,
+            android_dataspace dataspace, const sk_sp<SkImage>& layerImage);
 
     void destroyLayer();
 
-    Layer::Api getBackingLayerApi() { return mLayerApi; }
-
 private:
     RenderState& mRenderState;
 
@@ -113,17 +108,12 @@ private:
     sk_sp<SkColorFilter> mColorFilter;
     int mAlpha = 255;
     SkBlendMode mMode = SkBlendMode::kSrcOver;
-    sp<GLConsumer> mSurfaceTexture;
+    sp<SurfaceTexture> mSurfaceTexture;
     SkMatrix* mTransform;
     bool mGLContextAttached;
     bool mUpdateTexImage;
 
     Layer* mLayer;
-    Layer::Api mLayerApi;
-    CreateLayerFn mCreateLayerFn;
-
-    void doUpdateTexImage();
-    void doUpdateVkTexImage();
 };
 
 } /* namespace uirenderer */
diff --git a/libs/hwui/GlLayer.cpp b/libs/hwui/GlLayer.cpp
deleted file mode 100644
index 432bb8526465..000000000000
--- a/libs/hwui/GlLayer.cpp
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "GlLayer.h"
-
-#include "Caches.h"
-#include "RenderNode.h"
-#include "renderstate/RenderState.h"
-
-namespace android {
-namespace uirenderer {
-
-GlLayer::GlLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight,
-                 sk_sp<SkColorFilter> colorFilter, int alpha, SkBlendMode mode, bool blend)
-        : Layer(renderState, Api::OpenGL, colorFilter, alpha, mode)
-        , caches(Caches::getInstance())
-        , texture(caches) {
-    texture.mWidth = layerWidth;
-    texture.mHeight = layerHeight;
-    texture.blend = blend;
-}
-
-GlLayer::~GlLayer() {
-    // There's a rare possibility that Caches could have been destroyed already
-    // since this method is queued up as a task.
-    // Since this is a reset method, treat this as non-fatal.
-    if (caches.isInitialized() && texture.mId) {
-        texture.deleteTexture();
-    }
-}
-
-void GlLayer::onGlContextLost() {
-    texture.deleteTexture();
-}
-
-void GlLayer::setRenderTarget(GLenum renderTarget) {
-    if (renderTarget != getRenderTarget()) {
-        // new render target: bind with new target, and update filter/wrap
-        texture.mTarget = renderTarget;
-        if (texture.mId) {
-            caches.textureState().bindTexture(texture.target(), texture.mId);
-        }
-        texture.setFilter(GL_NEAREST, false, true);
-        texture.setWrap(GL_CLAMP_TO_EDGE, false, true);
-    }
-}
-
-void GlLayer::generateTexture() {
-    if (!texture.mId) {
-        glGenTextures(1, &texture.mId);
-    }
-}
-
-};  // namespace uirenderer
-};  // namespace android
diff --git a/libs/hwui/GlLayer.h b/libs/hwui/GlLayer.h
deleted file mode 100644
index 9f70fdae6790..000000000000
--- a/libs/hwui/GlLayer.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include "Layer.h"
-
-#include "Texture.h"
-
-namespace android {
-namespace uirenderer {
-
-// Forward declarations
-class Caches;
-
-/**
- * A layer has dimensions and is backed by an OpenGL texture or FBO.
- */
-class GlLayer : public Layer {
-public:
-    GlLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight,
-            sk_sp<SkColorFilter> colorFilter, int alpha, SkBlendMode mode, bool blend);
-    virtual ~GlLayer();
-
-    uint32_t getWidth() const override { return texture.mWidth; }
-
-    uint32_t getHeight() const override { return texture.mHeight; }
-
-    void setSize(uint32_t width, uint32_t height) override {
-        texture.updateLayout(width, height, texture.internalFormat(), texture.format(),
-                             texture.target());
-    }
-
-    void setBlend(bool blend) override { texture.blend = blend; }
-
-    bool isBlend() const override { return texture.blend; }
-
-    inline GLuint getTextureId() const { return texture.id(); }
-
-    inline GLenum getRenderTarget() const { return texture.target(); }
-
-    void setRenderTarget(GLenum renderTarget);
-
-    void generateTexture();
-
-    /**
-     * Lost the GL context but the layer is still around, mark it invalid internally
-     * so the dtor knows not to do any GL work
-     */
-    void onGlContextLost();
-
-private:
-    Caches& caches;
-
-    /**
-     * The texture backing this layer.
-     */
-    Texture texture;
-};  // struct GlLayer
-
-};  // namespace uirenderer
-};  // namespace android
diff --git a/libs/hwui/GpuMemoryTracker.cpp b/libs/hwui/GpuMemoryTracker.cpp
index 612bfde1a3fa..a9a7af8f22f3 100644
--- a/libs/hwui/GpuMemoryTracker.cpp
+++ b/libs/hwui/GpuMemoryTracker.cpp
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-#include "Texture.h"
 #include "utils/StringUtils.h"
 
 #include <GpuMemoryTracker.h>
@@ -117,22 +116,6 @@ void GpuMemoryTracker::onFrameCompleted() {
             ATRACE_INT(buf, stats.count);
         }
     }
-
-    std::vector<const Texture*> freeList;
-    for (const auto& obj : gObjectSet) {
-        if (obj->objectType() == GpuObjectType::Texture) {
-            const Texture* texture = static_cast<Texture*>(obj);
-            if (texture->cleanup) {
-                ALOGE("Leaked texture marked for cleanup! id=%u, size %ux%u", texture->id(),
-                      texture->width(), texture->height());
-                freeList.push_back(texture);
-            }
-        }
-    }
-    for (auto& texture : freeList) {
-        const_cast<Texture*>(texture)->deleteTexture();
-        delete texture;
-    }
 }
 
 }  // namespace uirenderer
diff --git a/libs/hwui/Layer.cpp b/libs/hwui/Layer.cpp
index fb8f0337c95e..f59a2e6ee5c1 100644
--- a/libs/hwui/Layer.cpp
+++ b/libs/hwui/Layer.cpp
@@ -17,17 +17,17 @@
 #include "Layer.h"
 
 #include "renderstate/RenderState.h"
+#include "utils/Color.h"
 
 #include <SkToSRGBColorFilter.h>
 
 namespace android {
 namespace uirenderer {
 
-Layer::Layer(RenderState& renderState, Api api, sk_sp<SkColorFilter> colorFilter, int alpha,
-             SkBlendMode mode)
+Layer::Layer(RenderState& renderState, sk_sp<SkColorFilter> colorFilter, int alpha,
+        SkBlendMode mode)
         : GpuMemoryTracker(GpuObjectType::Layer)
         , mRenderState(renderState)
-        , mApi(api)
         , mColorFilter(colorFilter)
         , alpha(alpha)
         , mode(mode) {
@@ -36,6 +36,8 @@ Layer::Layer(RenderState& renderState, Api api, sk_sp<SkColorFilter> colorFilter
     incStrong(nullptr);
     buildColorSpaceWithFilter();
     renderState.registerLayer(this);
+    texTransform.setIdentity();
+    transform.setIdentity();
 }
 
 Layer::~Layer() {
diff --git a/libs/hwui/Layer.h b/libs/hwui/Layer.h
index 31878ac23642..c4e4c1c96ba6 100644
--- a/libs/hwui/Layer.h
+++ b/libs/hwui/Layer.h
@@ -23,8 +23,9 @@
 #include <SkColorFilter.h>
 #include <SkColorSpace.h>
 #include <SkPaint.h>
-
-#include "Matrix.h"
+#include <SkImage.h>
+#include <SkMatrix.h>
+#include <system/graphics.h>
 
 namespace android {
 namespace uirenderer {
@@ -40,24 +41,19 @@ class RenderState;
  */
 class Layer : public VirtualLightRefBase, GpuMemoryTracker {
 public:
-    enum class Api {
-        OpenGL = 0,
-        Vulkan = 1,
-    };
-
-    Api getApi() const { return mApi; }
+    Layer(RenderState& renderState, sk_sp<SkColorFilter>, int alpha, SkBlendMode mode);
 
     ~Layer();
 
-    virtual uint32_t getWidth() const = 0;
+    virtual uint32_t getWidth() const { return mWidth; }
 
-    virtual uint32_t getHeight() const = 0;
+    virtual uint32_t getHeight() const { return mHeight; }
 
-    virtual void setSize(uint32_t width, uint32_t height) = 0;
+    virtual void setSize(uint32_t width, uint32_t height) { mWidth = width; mHeight = height; }
 
-    virtual void setBlend(bool blend) = 0;
+    virtual void setBlend(bool blend) { mBlend = blend; }
 
-    virtual bool isBlend() const = 0;
+    virtual bool isBlend() const { return mBlend; }
 
     inline void setForceFilter(bool forceFilter) { this->forceFilter = forceFilter; }
 
@@ -84,9 +80,9 @@ public:
 
     inline sk_sp<SkColorFilter> getColorSpaceWithFilter() const { return mColorSpaceWithFilter; }
 
-    inline mat4& getTexTransform() { return texTransform; }
+    inline SkMatrix& getTexTransform() { return texTransform; }
 
-    inline mat4& getTransform() { return transform; }
+    inline SkMatrix& getTransform() { return transform; }
 
     /**
      * Posts a decStrong call to the appropriate thread.
@@ -94,16 +90,17 @@ public:
      */
     void postDecStrong();
 
+    inline void setImage(const sk_sp<SkImage>& image) { this->layerImage = image; }
+
+    inline sk_sp<SkImage> getImage() const { return this->layerImage; }
+
 protected:
-    Layer(RenderState& renderState, Api api, sk_sp<SkColorFilter>, int alpha, SkBlendMode mode);
 
     RenderState& mRenderState;
 
 private:
     void buildColorSpaceWithFilter();
 
-    Api mApi;
-
     /**
      * Color filter used to draw this layer. Optional.
      */
@@ -137,12 +134,32 @@ private:
     /**
      * Optional texture coordinates transform.
      */
-    mat4 texTransform;
+    SkMatrix texTransform;
 
     /**
      * Optional transform.
      */
-    mat4 transform;
+    SkMatrix transform;
+
+    /**
+     * An image backing the layer.
+     */
+    sk_sp<SkImage> layerImage;
+
+    /**
+     * layer width.
+     */
+    uint32_t mWidth = 0;
+
+    /**
+     * layer height.
+     */
+    uint32_t mHeight = 0;
+
+    /**
+     * enable blending
+     */
+    bool mBlend = false;
 
 };  // struct Layer
 
diff --git a/libs/hwui/PixelBuffer.cpp b/libs/hwui/PixelBuffer.cpp
deleted file mode 100644
index 910a9889db1f..000000000000
--- a/libs/hwui/PixelBuffer.cpp
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "PixelBuffer.h"
-
-#include "Debug.h"
-#include "Extensions.h"
-#include "Properties.h"
-#include "renderstate/RenderState.h"
-#include "utils/GLUtils.h"
-
-#include <utils/Log.h>
-
-namespace android {
-namespace uirenderer {
-
-///////////////////////////////////////////////////////////////////////////////
-// CPU pixel buffer
-///////////////////////////////////////////////////////////////////////////////
-
-class CpuPixelBuffer : public PixelBuffer {
-public:
-    CpuPixelBuffer(GLenum format, uint32_t width, uint32_t height);
-
-    uint8_t* map(AccessMode mode = kAccessMode_ReadWrite) override;
-
-    void upload(uint32_t x, uint32_t y, uint32_t width, uint32_t height, int offset) override;
-
-protected:
-    void unmap() override;
-
-private:
-    std::unique_ptr<uint8_t[]> mBuffer;
-};
-
-CpuPixelBuffer::CpuPixelBuffer(GLenum format, uint32_t width, uint32_t height)
-        : PixelBuffer(format, width, height)
-        , mBuffer(new uint8_t[width * height * formatSize(format)]) {}
-
-uint8_t* CpuPixelBuffer::map(AccessMode mode) {
-    if (mAccessMode == kAccessMode_None) {
-        mAccessMode = mode;
-    }
-    return mBuffer.get();
-}
-
-void CpuPixelBuffer::unmap() {
-    mAccessMode = kAccessMode_None;
-}
-
-void CpuPixelBuffer::upload(uint32_t x, uint32_t y, uint32_t width, uint32_t height, int offset) {
-    glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height, mFormat, GL_UNSIGNED_BYTE,
-                    &mBuffer[offset]);
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// GPU pixel buffer
-///////////////////////////////////////////////////////////////////////////////
-
-class GpuPixelBuffer : public PixelBuffer {
-public:
-    GpuPixelBuffer(GLenum format, uint32_t width, uint32_t height);
-    ~GpuPixelBuffer();
-
-    uint8_t* map(AccessMode mode = kAccessMode_ReadWrite) override;
-
-    void upload(uint32_t x, uint32_t y, uint32_t width, uint32_t height, int offset) override;
-
-protected:
-    void unmap() override;
-
-private:
-    GLuint mBuffer;
-    uint8_t* mMappedPointer;
-    Caches& mCaches;
-};
-
-GpuPixelBuffer::GpuPixelBuffer(GLenum format, uint32_t width, uint32_t height)
-        : PixelBuffer(format, width, height)
-        , mMappedPointer(nullptr)
-        , mCaches(Caches::getInstance()) {
-    glGenBuffers(1, &mBuffer);
-
-    mCaches.pixelBufferState().bind(mBuffer);
-    glBufferData(GL_PIXEL_UNPACK_BUFFER, getSize(), nullptr, GL_DYNAMIC_DRAW);
-    mCaches.pixelBufferState().unbind();
-}
-
-GpuPixelBuffer::~GpuPixelBuffer() {
-    glDeleteBuffers(1, &mBuffer);
-}
-
-uint8_t* GpuPixelBuffer::map(AccessMode mode) {
-    if (mAccessMode == kAccessMode_None) {
-        mCaches.pixelBufferState().bind(mBuffer);
-        mMappedPointer = (uint8_t*)glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, getSize(), mode);
-        if (CC_UNLIKELY(!mMappedPointer)) {
-            GLUtils::dumpGLErrors();
-            LOG_ALWAYS_FATAL("Failed to map PBO");
-        }
-        mAccessMode = mode;
-        mCaches.pixelBufferState().unbind();
-    }
-
-    return mMappedPointer;
-}
-
-void GpuPixelBuffer::unmap() {
-    if (mAccessMode != kAccessMode_None) {
-        if (mMappedPointer) {
-            mCaches.pixelBufferState().bind(mBuffer);
-            GLboolean status = glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
-            if (status == GL_FALSE) {
-                ALOGE("Corrupted GPU pixel buffer");
-            }
-        }
-        mAccessMode = kAccessMode_None;
-        mMappedPointer = nullptr;
-    }
-}
-
-void GpuPixelBuffer::upload(uint32_t x, uint32_t y, uint32_t width, uint32_t height, int offset) {
-    // If the buffer is not mapped, unmap() will not bind it
-    mCaches.pixelBufferState().bind(mBuffer);
-    unmap();
-    glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height, mFormat, GL_UNSIGNED_BYTE,
-                    reinterpret_cast<void*>(offset));
-    mCaches.pixelBufferState().unbind();
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// Factory
-///////////////////////////////////////////////////////////////////////////////
-
-PixelBuffer* PixelBuffer::create(GLenum format, uint32_t width, uint32_t height, BufferType type) {
-    if (type == kBufferType_Auto && Caches::getInstance().gpuPixelBuffersEnabled) {
-        return new GpuPixelBuffer(format, width, height);
-    }
-    return new CpuPixelBuffer(format, width, height);
-}
-
-};  // namespace uirenderer
-};  // namespace android
diff --git a/libs/hwui/PixelBuffer.h b/libs/hwui/PixelBuffer.h
deleted file mode 100644
index e7e341b90ad3..000000000000
--- a/libs/hwui/PixelBuffer.h
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_HWUI_PIXEL_BUFFER_H
-#define ANDROID_HWUI_PIXEL_BUFFER_H
-
-#include <GLES3/gl3.h>
-
-#include <log/log.h>
-
-namespace android {
-namespace uirenderer {
-
-/**
- * Represents a pixel buffer. A pixel buffer will be backed either by a
- * PBO on OpenGL ES 3.0 and higher or by an array of uint8_t on other
- * versions. If the buffer is backed by a PBO it will of type
- * GL_PIXEL_UNPACK_BUFFER.
- *
- * To read from or write into a PixelBuffer you must first map the
- * buffer using the map(AccessMode) method. This method returns a
- * pointer to the beginning of the buffer.
- *
- * Before the buffer can be used by the GPU, for instance to upload
- * a texture, you must first unmap the buffer. To do so, call the
- * unmap() method.
- *
- * Mapping and unmapping a PixelBuffer can have the side effect of
- * changing the currently active GL_PIXEL_UNPACK_BUFFER. It is
- * therefore recommended to call Caches::unbindPixelbuffer() after
- * using a PixelBuffer to upload to a texture.
- */
-class PixelBuffer {
-public:
-    enum BufferType { kBufferType_Auto, kBufferType_CPU };
-
-    enum AccessMode {
-        kAccessMode_None = 0,
-        kAccessMode_Read = GL_MAP_READ_BIT,
-        kAccessMode_Write = GL_MAP_WRITE_BIT,
-        kAccessMode_ReadWrite = GL_MAP_READ_BIT | GL_MAP_WRITE_BIT
-    };
-
-    /**
-     * Creates a new PixelBuffer object with the specified format and
-     * dimensions. The buffer is immediately allocated.
-     *
-     * The buffer type specifies how the buffer should be allocated.
-     * By default this method will automatically choose whether to allocate
-     * a CPU or GPU buffer.
-     */
-    static PixelBuffer* create(GLenum format, uint32_t width, uint32_t height,
-                               BufferType type = kBufferType_Auto);
-
-    virtual ~PixelBuffer() {}
-
-    /**
-     * Returns the format of this render buffer.
-     */
-    GLenum getFormat() const { return mFormat; }
-
-    /**
-     * Maps this before with the specified access mode. This method
-     * returns a pointer to the region of memory where the buffer was
-     * mapped.
-     *
-     * If the buffer is already mapped when this method is invoked,
-     * this method will return the previously mapped pointer. The
-     * access mode can only be changed by calling unmap() first.
-     *
-     * The specified access mode cannot be kAccessMode_None.
-     */
-    virtual uint8_t* map(AccessMode mode = kAccessMode_ReadWrite) = 0;
-
-    /**
-     * Returns the current access mode for this buffer. If the buffer
-     * is not mapped, this method returns kAccessMode_None.
-     */
-    AccessMode getAccessMode() const { return mAccessMode; }
-
-    /**
-     * Upload the specified rectangle of this pixel buffer as a
-     * GL_TEXTURE_2D texture. Calling this method will trigger
-     * an unmap() if necessary.
-     */
-    virtual void upload(uint32_t x, uint32_t y, uint32_t width, uint32_t height, int offset) = 0;
-
-    /**
-     * Upload the specified rectangle of this pixel buffer as a
-     * GL_TEXTURE_2D texture. Calling this method will trigger
-     * an unmap() if necessary.
-     *
-     * This is a convenience function provided to save callers the
-     * trouble of computing the offset parameter.
-     */
-    void upload(uint32_t x, uint32_t y, uint32_t width, uint32_t height) {
-        upload(x, y, width, height, getOffset(x, y));
-    }
-
-    /**
-     * Returns the width of the render buffer in pixels.
-     */
-    uint32_t getWidth() const { return mWidth; }
-
-    /**
-     * Returns the height of the render buffer in pixels.
-     */
-    uint32_t getHeight() const { return mHeight; }
-
-    /**
-     * Returns the size of this pixel buffer in bytes.
-     */
-    uint32_t getSize() const { return mWidth * mHeight * formatSize(mFormat); }
-
-    /**
-     * Returns the offset of a pixel in this pixel buffer, in bytes.
-     */
-    uint32_t getOffset(uint32_t x, uint32_t y) const {
-        return (y * mWidth + x) * formatSize(mFormat);
-    }
-
-    /**
-     * Returns the number of bytes per pixel in the specified format.
-     *
-     * Supported formats:
-     *      GL_ALPHA
-     *      GL_RGBA
-     */
-    static uint32_t formatSize(GLenum format) {
-        switch (format) {
-            case GL_ALPHA:
-                return 1;
-            case GL_RGBA:
-                return 4;
-        }
-        return 0;
-    }
-
-    /**
-     * Returns the alpha channel offset in the specified format.
-     *
-     * Supported formats:
-     *      GL_ALPHA
-     *      GL_RGBA
-     */
-    static uint32_t formatAlphaOffset(GLenum format) {
-        switch (format) {
-            case GL_ALPHA:
-                return 0;
-            case GL_RGBA:
-                return 3;
-        }
-
-        ALOGE("unsupported format: %d", format);
-        return 0;
-    }
-
-protected:
-    /**
-     * Creates a new render buffer in the specified format and dimensions.
-     * The format must be GL_ALPHA or GL_RGBA.
-     */
-    PixelBuffer(GLenum format, uint32_t width, uint32_t height)
-            : mFormat(format), mWidth(width), mHeight(height), mAccessMode(kAccessMode_None) {}
-
-    /**
-     * Unmaps this buffer, if needed. After the buffer is unmapped,
-     * the pointer previously returned by map() becomes invalid and
-     * should not be used.
-     */
-    virtual void unmap() = 0;
-
-    GLenum mFormat;
-
-    uint32_t mWidth;
-    uint32_t mHeight;
-
-    AccessMode mAccessMode;
-
-};  // class PixelBuffer
-
-};  // namespace uirenderer
-};  // namespace android
-
-#endif  // ANDROID_HWUI_PIXEL_BUFFER_H
diff --git a/libs/hwui/RenderProperties.h b/libs/hwui/RenderProperties.h
index 0766e3b7ed28..7966845ff814 100644
--- a/libs/hwui/RenderProperties.h
+++ b/libs/hwui/RenderProperties.h
@@ -16,7 +16,6 @@
 
 #pragma once
 
-#include "Caches.h"
 #include "DeviceInfo.h"
 #include "Outline.h"
 #include "Rect.h"
diff --git a/libs/hwui/ResourceCache.cpp b/libs/hwui/ResourceCache.cpp
index 464a58d0c0f8..65bee476f14d 100644
--- a/libs/hwui/ResourceCache.cpp
+++ b/libs/hwui/ResourceCache.cpp
@@ -15,7 +15,6 @@
  */
 
 #include "ResourceCache.h"
-#include "Caches.h"
 
 namespace android {
 
@@ -112,13 +111,9 @@ void ResourceCache::destructorLocked(Res_png_9patch* resource) {
     ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : nullptr;
     if (ref == nullptr) {
         // If we're not tracking this resource, just delete it
-        if (Caches::hasInstance()) {
-            // DEAD CODE
-        } else {
-            // A Res_png_9patch is actually an array of byte that's larger
-            // than sizeof(Res_png_9patch). It must be freed as an array.
-            delete[](int8_t*) resource;
-        }
+        // A Res_png_9patch is actually an array of byte that's larger
+        // than sizeof(Res_png_9patch). It must be freed as an array.
+        delete[](int8_t*) resource;
         return;
     }
     ref->destroyed = true;
@@ -135,14 +130,10 @@ void ResourceCache::deleteResourceReferenceLocked(const void* resource, Resource
     if (ref->destroyed) {
         switch (ref->resourceType) {
             case kNinePatch: {
-                if (Caches::hasInstance()) {
-                    // DEAD CODE
-                } else {
-                    // A Res_png_9patch is actually an array of byte that's larger
-                    // than sizeof(Res_png_9patch). It must be freed as an array.
-                    int8_t* patch = (int8_t*)resource;
-                    delete[] patch;
-                }
+                // A Res_png_9patch is actually an array of byte that's larger
+                // than sizeof(Res_png_9patch). It must be freed as an array.
+                int8_t* patch = (int8_t*)resource;
+                delete[] patch;
             } break;
         }
     }
diff --git a/libs/hwui/Texture.cpp b/libs/hwui/Texture.cpp
deleted file mode 100644
index 1e90eebe3bb8..000000000000
--- a/libs/hwui/Texture.cpp
+++ /dev/null
@@ -1,413 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "Texture.h"
-#include "Caches.h"
-#include "utils/GLUtils.h"
-#include "utils/MathUtils.h"
-#include "utils/TraceUtils.h"
-
-#include <utils/Log.h>
-
-#include <math/mat4.h>
-
-#include <SkCanvas.h>
-
-namespace android {
-namespace uirenderer {
-
-// Number of bytes used by a texture in the given format
-static int bytesPerPixel(GLint glFormat) {
-    switch (glFormat) {
-        // The wrapped-texture case, usually means a SurfaceTexture
-        case 0:
-            return 0;
-        case GL_LUMINANCE:
-        case GL_ALPHA:
-            return 1;
-        case GL_SRGB8:
-        case GL_RGB:
-            return 3;
-        case GL_SRGB8_ALPHA8:
-        case GL_RGBA:
-            return 4;
-        case GL_RGBA16F:
-            return 8;
-        default:
-            LOG_ALWAYS_FATAL("UNKNOWN FORMAT 0x%x", glFormat);
-    }
-}
-
-void Texture::setWrapST(GLenum wrapS, GLenum wrapT, bool bindTexture, bool force) {
-    if (force || wrapS != mWrapS || wrapT != mWrapT) {
-        mWrapS = wrapS;
-        mWrapT = wrapT;
-
-        if (bindTexture) {
-            mCaches.textureState().bindTexture(mTarget, mId);
-        }
-
-        glTexParameteri(mTarget, GL_TEXTURE_WRAP_S, wrapS);
-        glTexParameteri(mTarget, GL_TEXTURE_WRAP_T, wrapT);
-    }
-}
-
-void Texture::setFilterMinMag(GLenum min, GLenum mag, bool bindTexture, bool force) {
-    if (force || min != mMinFilter || mag != mMagFilter) {
-        mMinFilter = min;
-        mMagFilter = mag;
-
-        if (bindTexture) {
-            mCaches.textureState().bindTexture(mTarget, mId);
-        }
-
-        if (mipMap && min == GL_LINEAR) min = GL_LINEAR_MIPMAP_LINEAR;
-
-        glTexParameteri(mTarget, GL_TEXTURE_MIN_FILTER, min);
-        glTexParameteri(mTarget, GL_TEXTURE_MAG_FILTER, mag);
-    }
-}
-
-void Texture::deleteTexture() {
-    mCaches.textureState().deleteTexture(mId);
-    mId = 0;
-    mTarget = GL_NONE;
-    if (mEglImageHandle != EGL_NO_IMAGE_KHR) {
-        EGLDisplay eglDisplayHandle = eglGetCurrentDisplay();
-        eglDestroyImageKHR(eglDisplayHandle, mEglImageHandle);
-        mEglImageHandle = EGL_NO_IMAGE_KHR;
-    }
-}
-
-bool Texture::updateLayout(uint32_t width, uint32_t height, GLint internalFormat, GLint format,
-                           GLenum target) {
-    if (mWidth == width && mHeight == height && mFormat == format &&
-        mInternalFormat == internalFormat && mTarget == target) {
-        return false;
-    }
-    mWidth = width;
-    mHeight = height;
-    mFormat = format;
-    mInternalFormat = internalFormat;
-    mTarget = target;
-    notifySizeChanged(mWidth * mHeight * bytesPerPixel(internalFormat));
-    return true;
-}
-
-void Texture::resetCachedParams() {
-    mWrapS = GL_REPEAT;
-    mWrapT = GL_REPEAT;
-    mMinFilter = GL_NEAREST_MIPMAP_LINEAR;
-    mMagFilter = GL_LINEAR;
-}
-
-void Texture::upload(GLint internalFormat, uint32_t width, uint32_t height, GLenum format,
-                     GLenum type, const void* pixels) {
-    GL_CHECKPOINT(MODERATE);
-
-    // We don't have color space information, we assume the data is gamma encoded
-    mIsLinear = false;
-
-    bool needsAlloc = updateLayout(width, height, internalFormat, format, GL_TEXTURE_2D);
-    if (!mId) {
-        glGenTextures(1, &mId);
-        needsAlloc = true;
-        resetCachedParams();
-    }
-    mCaches.textureState().bindTexture(GL_TEXTURE_2D, mId);
-    if (needsAlloc) {
-        glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, mWidth, mHeight, 0, format, type, pixels);
-    } else if (pixels) {
-        glTexSubImage2D(GL_TEXTURE_2D, 0, internalFormat, mWidth, mHeight, 0, format, type, pixels);
-    }
-    GL_CHECKPOINT(MODERATE);
-}
-
-void Texture::uploadHardwareBitmapToTexture(GraphicBuffer* buffer) {
-    EGLDisplay eglDisplayHandle = eglGetCurrentDisplay();
-    if (mEglImageHandle != EGL_NO_IMAGE_KHR) {
-        eglDestroyImageKHR(eglDisplayHandle, mEglImageHandle);
-        mEglImageHandle = EGL_NO_IMAGE_KHR;
-    }
-    mEglImageHandle = eglCreateImageKHR(eglDisplayHandle, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
-                                        buffer->getNativeBuffer(), 0);
-    glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, mEglImageHandle);
-}
-
-static void uploadToTexture(bool resize, GLint internalFormat, GLenum format, GLenum type,
-                            GLsizei stride, GLsizei bpp, GLsizei width, GLsizei height,
-                            const GLvoid* data) {
-    const bool useStride =
-            stride != width && Caches::getInstance().extensions().hasUnpackRowLength();
-    if ((stride == width) || useStride) {
-        if (useStride) {
-            glPixelStorei(GL_UNPACK_ROW_LENGTH, stride);
-        }
-
-        if (resize) {
-            glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format, type, data);
-        } else {
-            glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, type, data);
-        }
-
-        if (useStride) {
-            glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
-        }
-    } else {
-        //  With OpenGL ES 2.0 we need to copy the bitmap in a temporary buffer
-        //  if the stride doesn't match the width
-
-        GLvoid* temp = (GLvoid*)malloc(width * height * bpp);
-        if (!temp) return;
-
-        uint8_t* pDst = (uint8_t*)temp;
-        uint8_t* pSrc = (uint8_t*)data;
-        for (GLsizei i = 0; i < height; i++) {
-            memcpy(pDst, pSrc, width * bpp);
-            pDst += width * bpp;
-            pSrc += stride * bpp;
-        }
-
-        if (resize) {
-            glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, width, height, 0, format, type, temp);
-        } else {
-            glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, type, temp);
-        }
-
-        free(temp);
-    }
-}
-
-void Texture::colorTypeToGlFormatAndType(const Caches& caches, SkColorType colorType, bool needSRGB,
-                                         GLint* outInternalFormat, GLint* outFormat,
-                                         GLint* outType) {
-    switch (colorType) {
-        case kAlpha_8_SkColorType:
-            *outFormat = GL_ALPHA;
-            *outInternalFormat = GL_ALPHA;
-            *outType = GL_UNSIGNED_BYTE;
-            break;
-        case kRGB_565_SkColorType:
-            if (needSRGB) {
-                // We would ideally use a GL_RGB/GL_SRGB8 texture but the
-                // intermediate Skia bitmap needs to be ARGB_8888
-                *outFormat = GL_RGBA;
-                *outInternalFormat = caches.rgbaInternalFormat();
-                *outType = GL_UNSIGNED_BYTE;
-            } else {
-                *outFormat = GL_RGB;
-                *outInternalFormat = GL_RGB;
-                *outType = GL_UNSIGNED_SHORT_5_6_5;
-            }
-            break;
-        // ARGB_4444 is upconverted to RGBA_8888
-        case kARGB_4444_SkColorType:
-        case kN32_SkColorType:
-            *outFormat = GL_RGBA;
-            *outInternalFormat = caches.rgbaInternalFormat(needSRGB);
-            *outType = GL_UNSIGNED_BYTE;
-            break;
-        case kGray_8_SkColorType:
-            *outFormat = GL_LUMINANCE;
-            *outInternalFormat = GL_LUMINANCE;
-            *outType = GL_UNSIGNED_BYTE;
-            break;
-        case kRGBA_F16_SkColorType:
-            if (caches.extensions().getMajorGlVersion() >= 3) {
-                // This format is always linear
-                *outFormat = GL_RGBA;
-                *outInternalFormat = GL_RGBA16F;
-                *outType = GL_HALF_FLOAT;
-            } else {
-                *outFormat = GL_RGBA;
-                *outInternalFormat = caches.rgbaInternalFormat(true);
-                *outType = GL_UNSIGNED_BYTE;
-            }
-            break;
-        default:
-            LOG_ALWAYS_FATAL("Unsupported bitmap colorType: %d", colorType);
-            break;
-    }
-}
-
-SkBitmap Texture::uploadToN32(const SkBitmap& bitmap, bool hasLinearBlending,
-                              sk_sp<SkColorSpace> sRGB) {
-    SkBitmap rgbaBitmap;
-    rgbaBitmap.allocPixels(SkImageInfo::MakeN32(bitmap.width(), bitmap.height(),
-                                                bitmap.info().alphaType(),
-                                                hasLinearBlending ? sRGB : nullptr));
-    rgbaBitmap.eraseColor(0);
-
-    if (bitmap.colorType() == kRGBA_F16_SkColorType) {
-        // Drawing RGBA_F16 onto ARGB_8888 is not supported
-        bitmap.readPixels(rgbaBitmap.info().makeColorSpace(SkColorSpace::MakeSRGB()),
-                          rgbaBitmap.getPixels(), rgbaBitmap.rowBytes(), 0, 0);
-    } else {
-        SkCanvas canvas(rgbaBitmap);
-        canvas.drawBitmap(bitmap, 0.0f, 0.0f, nullptr);
-    }
-
-    return rgbaBitmap;
-}
-
-bool Texture::hasUnsupportedColorType(const SkImageInfo& info, bool hasLinearBlending) {
-    return info.colorType() == kARGB_4444_SkColorType ||
-           (info.colorType() == kRGB_565_SkColorType && hasLinearBlending &&
-            info.colorSpace()->isSRGB()) ||
-           (info.colorType() == kRGBA_F16_SkColorType &&
-            Caches::getInstance().extensions().getMajorGlVersion() < 3);
-}
-
-void Texture::upload(Bitmap& bitmap) {
-    ATRACE_FORMAT("Upload %ux%u Texture", bitmap.width(), bitmap.height());
-
-    // We could also enable mipmapping if both bitmap dimensions are powers
-    // of 2 but we'd have to deal with size changes. Let's keep this simple
-    const bool canMipMap = mCaches.extensions().hasNPot();
-
-    // If the texture had mipmap enabled but not anymore,
-    // force a glTexImage2D to discard the mipmap levels
-    bool needsAlloc = canMipMap && mipMap && !bitmap.hasHardwareMipMap();
-    bool setDefaultParams = false;
-
-    if (!mId) {
-        glGenTextures(1, &mId);
-        needsAlloc = true;
-        setDefaultParams = true;
-    }
-
-    bool hasLinearBlending = mCaches.extensions().hasLinearBlending();
-    bool needSRGB = transferFunctionCloseToSRGB(bitmap.info().colorSpace());
-
-    GLint internalFormat, format, type;
-    colorTypeToGlFormatAndType(mCaches, bitmap.colorType(), needSRGB && hasLinearBlending,
-                               &internalFormat, &format, &type);
-
-    // Some devices don't support GL_RGBA16F, so we need to compare the color type
-    // and internal GL format to decide what to do with 16 bit bitmaps
-    bool rgba16fNeedsConversion =
-            bitmap.colorType() == kRGBA_F16_SkColorType && internalFormat != GL_RGBA16F;
-
-    // RGBA16F is always linear extended sRGB
-    if (internalFormat == GL_RGBA16F) {
-        mIsLinear = true;
-    }
-
-    mConnector.reset();
-
-    // Alpha masks don't have color profiles
-    // If an RGBA16F bitmap needs conversion, we know the target will be sRGB
-    if (!mIsLinear && internalFormat != GL_ALPHA && !rgba16fNeedsConversion) {
-        SkColorSpace* colorSpace = bitmap.info().colorSpace();
-        // If the bitmap is sRGB we don't need conversion
-        if (colorSpace != nullptr && !colorSpace->isSRGB()) {
-            SkMatrix44 xyzMatrix(SkMatrix44::kUninitialized_Constructor);
-            if (!colorSpace->toXYZD50(&xyzMatrix)) {
-                ALOGW("Incompatible color space!");
-            } else {
-                SkColorSpaceTransferFn fn;
-                if (!colorSpace->isNumericalTransferFn(&fn)) {
-                    ALOGW("Incompatible color space, no numerical transfer function!");
-                } else {
-                    float data[16];
-                    xyzMatrix.asColMajorf(data);
-
-                    ColorSpace::TransferParameters p = {fn.fG, fn.fA, fn.fB, fn.fC,
-                                                        fn.fD, fn.fE, fn.fF};
-                    ColorSpace src("Unnamed", mat4f((const float*)&data[0]).upperLeft(), p);
-                    mConnector.reset(new ColorSpaceConnector(src, ColorSpace::sRGB()));
-
-                    // A non-sRGB color space might have a transfer function close enough to sRGB
-                    // that we can save shader instructions by using an sRGB sampler
-                    // This is only possible if we have hardware support for sRGB textures
-                    if (needSRGB && internalFormat == GL_RGBA && mCaches.extensions().hasSRGB() &&
-                        !bitmap.isHardware()) {
-                        internalFormat = GL_SRGB8_ALPHA8;
-                    }
-                }
-            }
-        }
-    }
-
-    GLenum target = bitmap.isHardware() ? GL_TEXTURE_EXTERNAL_OES : GL_TEXTURE_2D;
-    needsAlloc |= updateLayout(bitmap.width(), bitmap.height(), internalFormat, format, target);
-
-    blend = !bitmap.isOpaque();
-    mCaches.textureState().bindTexture(mTarget, mId);
-
-    // TODO: Handle sRGB gray bitmaps
-    if (CC_UNLIKELY(hasUnsupportedColorType(bitmap.info(), hasLinearBlending))) {
-        SkBitmap skBitmap;
-        bitmap.getSkBitmap(&skBitmap);
-        sk_sp<SkColorSpace> sRGB = SkColorSpace::MakeSRGB();
-        SkBitmap rgbaBitmap = uploadToN32(skBitmap, hasLinearBlending, std::move(sRGB));
-        uploadToTexture(needsAlloc, internalFormat, format, type, rgbaBitmap.rowBytesAsPixels(),
-                        rgbaBitmap.bytesPerPixel(), rgbaBitmap.width(), rgbaBitmap.height(),
-                        rgbaBitmap.getPixels());
-    } else if (bitmap.isHardware()) {
-        uploadHardwareBitmapToTexture(bitmap.graphicBuffer());
-    } else {
-        uploadToTexture(needsAlloc, internalFormat, format, type, bitmap.rowBytesAsPixels(),
-                        bitmap.info().bytesPerPixel(), bitmap.width(), bitmap.height(),
-                        bitmap.pixels());
-    }
-
-    if (canMipMap) {
-        mipMap = bitmap.hasHardwareMipMap();
-        if (mipMap) {
-            glGenerateMipmap(GL_TEXTURE_2D);
-        }
-    }
-
-    if (setDefaultParams) {
-        setFilter(GL_NEAREST);
-        setWrap(GL_CLAMP_TO_EDGE);
-    }
-}
-
-void Texture::wrap(GLuint id, uint32_t width, uint32_t height, GLint internalFormat, GLint format,
-                   GLenum target) {
-    mId = id;
-    mWidth = width;
-    mHeight = height;
-    mFormat = format;
-    mInternalFormat = internalFormat;
-    mTarget = target;
-    mConnector.reset();
-    // We're wrapping an existing texture, so don't double count this memory
-    notifySizeChanged(0);
-}
-
-TransferFunctionType Texture::getTransferFunctionType() const {
-    if (mConnector.get() != nullptr && mInternalFormat != GL_SRGB8_ALPHA8) {
-        const ColorSpace::TransferParameters& p = mConnector->getSource().getTransferParameters();
-        if (MathUtils::isZero(p.e) && MathUtils::isZero(p.f)) {
-            if (MathUtils::areEqual(p.a, 1.0f) && MathUtils::isZero(p.b) &&
-                MathUtils::isZero(p.c) && MathUtils::isZero(p.d)) {
-                if (MathUtils::areEqual(p.g, 1.0f)) {
-                    return TransferFunctionType::None;
-                }
-                return TransferFunctionType::Gamma;
-            }
-            return TransferFunctionType::Limited;
-        }
-        return TransferFunctionType::Full;
-    }
-    return TransferFunctionType::None;
-}
-
-};  // namespace uirenderer
-};  // namespace android
diff --git a/libs/hwui/Texture.h b/libs/hwui/Texture.h
deleted file mode 100644
index 5b7e4e261f30..000000000000
--- a/libs/hwui/Texture.h
+++ /dev/null
@@ -1,228 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_HWUI_TEXTURE_H
-#define ANDROID_HWUI_TEXTURE_H
-
-#include "GpuMemoryTracker.h"
-#include "hwui/Bitmap.h"
-#include "utils/Color.h"
-
-#include <memory>
-
-#include <math/mat3.h>
-
-#include <ui/ColorSpace.h>
-
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-#include <GLES2/gl2.h>
-#include <GLES3/gl3.h>
-#include <SkBitmap.h>
-
-namespace android {
-
-class GraphicBuffer;
-
-namespace uirenderer {
-
-class Caches;
-class UvMapper;
-class Layer;
-
-/**
- * Represents an OpenGL texture.
- */
-class Texture : public GpuMemoryTracker {
-public:
-    static SkBitmap uploadToN32(const SkBitmap& bitmap, bool hasLinearBlending,
-                                sk_sp<SkColorSpace> sRGB);
-    static bool hasUnsupportedColorType(const SkImageInfo& info, bool hasLinearBlending);
-    static void colorTypeToGlFormatAndType(const Caches& caches, SkColorType colorType,
-                                           bool needSRGB, GLint* outInternalFormat,
-                                           GLint* outFormat, GLint* outType);
-
-    explicit Texture(Caches& caches) : GpuMemoryTracker(GpuObjectType::Texture), mCaches(caches) {}
-
-    virtual ~Texture() {}
-
-    inline void setWrap(GLenum wrap, bool bindTexture = false, bool force = false) {
-        setWrapST(wrap, wrap, bindTexture, force);
-    }
-
-    virtual void setWrapST(GLenum wrapS, GLenum wrapT, bool bindTexture = false,
-                           bool force = false);
-
-    inline void setFilter(GLenum filter, bool bindTexture = false, bool force = false) {
-        setFilterMinMag(filter, filter, bindTexture, force);
-    }
-
-    virtual void setFilterMinMag(GLenum min, GLenum mag, bool bindTexture = false,
-                                 bool force = false);
-
-    /**
-     * Convenience method to call glDeleteTextures() on this texture's id.
-     */
-    void deleteTexture();
-
-    /**
-     * Sets the width, height, and format of the texture along with allocating
-     * the texture ID. Does nothing if the width, height, and format are already
-     * the requested values.
-     *
-     * The image data is undefined after calling this.
-     */
-    void resize(uint32_t width, uint32_t height, GLint internalFormat, GLint format) {
-        upload(internalFormat, width, height, format,
-               internalFormat == GL_RGBA16F ? GL_HALF_FLOAT : GL_UNSIGNED_BYTE, nullptr);
-    }
-
-    /**
-     * Updates this Texture with the contents of the provided Bitmap,
-     * also setting the appropriate width, height, and format. It is not necessary
-     * to call resize() prior to this.
-     *
-     * Note this does not set the generation from the Bitmap.
-     */
-    void upload(Bitmap& source);
-
-    /**
-     * Basically glTexImage2D/glTexSubImage2D.
-     */
-    void upload(GLint internalFormat, uint32_t width, uint32_t height, GLenum format, GLenum type,
-                const void* pixels);
-
-    /**
-     * Wraps an existing texture.
-     */
-    void wrap(GLuint id, uint32_t width, uint32_t height, GLint internalFormat, GLint format,
-              GLenum target);
-
-    GLuint id() const { return mId; }
-
-    uint32_t width() const { return mWidth; }
-
-    uint32_t height() const { return mHeight; }
-
-    GLint format() const { return mFormat; }
-
-    GLint internalFormat() const { return mInternalFormat; }
-
-    GLenum target() const { return mTarget; }
-
-    /**
-     * Returns nullptr if this texture does not require color space conversion
-     * to sRGB, or a valid pointer to a ColorSpaceConnector if a conversion
-     * is required.
-     */
-    constexpr const ColorSpaceConnector* getColorSpaceConnector() const { return mConnector.get(); }
-
-    constexpr bool hasColorSpaceConversion() const { return mConnector.get() != nullptr; }
-
-    TransferFunctionType getTransferFunctionType() const;
-
-    /**
-     * Returns true if this texture uses a linear encoding format.
-     */
-    constexpr bool isLinear() const { return mIsLinear; }
-
-    /**
-     * Generation of the backing bitmap,
-     */
-    uint32_t generation = 0;
-    /**
-     * Indicates whether the texture requires blending.
-     */
-    bool blend = false;
-    /**
-     * Indicates whether this texture should be cleaned up after use.
-     */
-    bool cleanup = false;
-    /**
-     * Optional, size of the original bitmap.
-     */
-    uint32_t bitmapSize = 0;
-    /**
-     * Indicates whether this texture will use trilinear filtering.
-     */
-    bool mipMap = false;
-
-    /**
-     * Optional, pointer to a texture coordinates mapper.
-     */
-    const UvMapper* uvMapper = nullptr;
-
-    /**
-     * Whether or not the Texture is marked in use and thus not evictable for
-     * the current frame. This is reset at the start of a new frame.
-     */
-    void* isInUse = nullptr;
-
-private:
-    // TODO: Temporarily grant private access to GlLayer, remove once
-    // GlLayer can be de-tangled from being a dual-purpose render target
-    // and external texture wrapper
-    friend class GlLayer;
-
-    // Returns true if the texture layout (size, format, etc.) changed, false if it was the same
-    bool updateLayout(uint32_t width, uint32_t height, GLint internalFormat, GLint format,
-                      GLenum target);
-    void uploadHardwareBitmapToTexture(GraphicBuffer* buffer);
-    void resetCachedParams();
-
-    GLuint mId = 0;
-    uint32_t mWidth = 0;
-    uint32_t mHeight = 0;
-    GLint mFormat = 0;
-    GLint mInternalFormat = 0;
-    GLenum mTarget = GL_NONE;
-    EGLImageKHR mEglImageHandle = EGL_NO_IMAGE_KHR;
-
-    /* See GLES spec section 3.8.14
-     * "In the initial state, the value assigned to TEXTURE_MIN_FILTER is
-     * NEAREST_MIPMAP_LINEAR and the value for TEXTURE_MAG_FILTER is LINEAR.
-     * s, t, and r wrap modes are all set to REPEAT."
-     */
-    GLenum mWrapS = GL_REPEAT;
-    GLenum mWrapT = GL_REPEAT;
-    GLenum mMinFilter = GL_NEAREST_MIPMAP_LINEAR;
-    GLenum mMagFilter = GL_LINEAR;
-
-    // Indicates whether the content of the texture is in linear space
-    bool mIsLinear = false;
-
-    Caches& mCaches;
-
-    std::unique_ptr<ColorSpaceConnector> mConnector;
-};  // struct Texture
-
-class AutoTexture {
-public:
-    explicit AutoTexture(Texture* texture) : texture(texture) {}
-    ~AutoTexture() {
-        if (texture && texture->cleanup) {
-            texture->deleteTexture();
-            delete texture;
-        }
-    }
-
-    Texture* const texture;
-};  // class AutoTexture
-
-};  // namespace uirenderer
-};  // namespace android
-
-#endif  // ANDROID_HWUI_TEXTURE_H
diff --git a/libs/hwui/VkLayer.cpp b/libs/hwui/VkLayer.cpp
deleted file mode 100644
index 30fba7ae7d9b..000000000000
--- a/libs/hwui/VkLayer.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "VkLayer.h"
-
-#include "renderstate/RenderState.h"
-
-#include <SkCanvas.h>
-#include <SkSurface.h>
-
-namespace android {
-namespace uirenderer {
-
-void VkLayer::updateTexture() {
-    sk_sp<SkSurface> surface;
-    SkImageInfo info = SkImageInfo::MakeS32(mWidth, mHeight, kPremul_SkAlphaType);
-    surface = SkSurface::MakeRenderTarget(mRenderState.getGrContext(), SkBudgeted::kNo, info);
-    surface->getCanvas()->clear(SK_ColorBLUE);
-    mImage = surface->makeImageSnapshot();
-}
-
-void VkLayer::onVkContextDestroyed() {
-    mImage = nullptr;
-}
-
-};  // namespace uirenderer
-};  // namespace android
diff --git a/libs/hwui/VkLayer.h b/libs/hwui/VkLayer.h
deleted file mode 100644
index e9664d04b7a5..000000000000
--- a/libs/hwui/VkLayer.h
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include "Layer.h"
-
-#include <SkImage.h>
-
-namespace android {
-namespace uirenderer {
-/**
- * A layer has dimensions and is backed by a VkImage.
- */
-class VkLayer : public Layer {
-public:
-    VkLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight,
-            sk_sp<SkColorFilter> colorFilter, int alpha, SkBlendMode mode, bool blend)
-            : Layer(renderState, Api::Vulkan, colorFilter, alpha, mode)
-            , mWidth(layerWidth)
-            , mHeight(layerHeight)
-            , mBlend(blend) {}
-
-    virtual ~VkLayer() {}
-
-    uint32_t getWidth() const override { return mWidth; }
-
-    uint32_t getHeight() const override { return mHeight; }
-
-    void setSize(uint32_t width, uint32_t height) override {
-        mWidth = width;
-        mHeight = height;
-    }
-
-    void setBlend(bool blend) override { mBlend = blend; }
-
-    bool isBlend() const override { return mBlend; }
-
-    sk_sp<SkImage> getImage() { return mImage; }
-
-    void updateTexture();
-
-    // If we've destroyed the vulkan context (VkInstance, VkDevice, etc.), we must make sure to
-    // destroy any VkImages that were made with that context.
-    void onVkContextDestroyed();
-
-private:
-    int mWidth;
-    int mHeight;
-    bool mBlend;
-
-    sk_sp<SkImage> mImage;
-
-};  // struct VkLayer
-
-};  // namespace uirenderer
-};  // namespace android
diff --git a/libs/hwui/hwui/Bitmap.cpp b/libs/hwui/hwui/Bitmap.cpp
index a7d37f8aa45c..3939696692d2 100644
--- a/libs/hwui/hwui/Bitmap.cpp
+++ b/libs/hwui/hwui/Bitmap.cpp
@@ -15,11 +15,11 @@
  */
 #include "Bitmap.h"
 
-#include "Caches.h"
 #include "HardwareBitmapUploader.h"
 #include "Properties.h"
 #include "renderthread/RenderProxy.h"
 #include "utils/Color.h"
+#include <utils/Trace.h>
 
 #include <sys/mman.h>
 
diff --git a/libs/hwui/pipeline/skia/LayerDrawable.cpp b/libs/hwui/pipeline/skia/LayerDrawable.cpp
index c41f6a6f0ee6..b6cd4b08e5fe 100644
--- a/libs/hwui/pipeline/skia/LayerDrawable.cpp
+++ b/libs/hwui/pipeline/skia/LayerDrawable.cpp
@@ -15,8 +15,6 @@
  */
 
 #include "LayerDrawable.h"
-#include "GlLayer.h"
-#include "VkLayer.h"
 
 #include "GrBackendSurface.h"
 #include "SkColorFilter.h"
@@ -41,42 +39,21 @@ bool LayerDrawable::DrawLayer(GrContext* context, SkCanvas* canvas, Layer* layer
         return false;
     }
     // transform the matrix based on the layer
-    SkMatrix layerTransform;
-    layer->getTransform().copyTo(layerTransform);
-    sk_sp<SkImage> layerImage;
+    SkMatrix layerTransform = layer->getTransform();
+    sk_sp<SkImage> layerImage = layer->getImage();
     const int layerWidth = layer->getWidth();
     const int layerHeight = layer->getHeight();
-    if (layer->getApi() == Layer::Api::OpenGL) {
-        GlLayer* glLayer = static_cast<GlLayer*>(layer);
-        GrGLTextureInfo externalTexture;
-        externalTexture.fTarget = glLayer->getRenderTarget();
-        externalTexture.fID = glLayer->getTextureId();
-        // The format may not be GL_RGBA8, but given the DeferredLayerUpdater and GLConsumer don't
-        // expose that info we use it as our default.  Further, given that we only use this texture
-        // as a source this will not impact how Skia uses the texture.  The only potential affect
-        // this is anticipated to have is that for some format types if we are not bound as an OES
-        // texture we may get invalid results for SKP capture if we read back the texture.
-        externalTexture.fFormat = GL_RGBA8;
-        GrBackendTexture backendTexture(layerWidth, layerHeight, GrMipMapped::kNo, externalTexture);
-        layerImage = SkImage::MakeFromTexture(context, backendTexture, kTopLeft_GrSurfaceOrigin,
-                                              kRGBA_8888_SkColorType, kPremul_SkAlphaType, nullptr);
-    } else {
-        SkASSERT(layer->getApi() == Layer::Api::Vulkan);
-        VkLayer* vkLayer = static_cast<VkLayer*>(layer);
-        canvas->clear(SK_ColorGREEN);
-        layerImage = vkLayer->getImage();
-    }
 
     if (layerImage) {
         SkMatrix textureMatrixInv;
-        layer->getTexTransform().copyTo(textureMatrixInv);
+        textureMatrixInv = layer->getTexTransform();
         // TODO: after skia bug https://bugs.chromium.org/p/skia/issues/detail?id=7075 is fixed
         // use bottom left origin and remove flipV and invert transformations.
         SkMatrix flipV;
         flipV.setAll(1, 0, 0, 0, -1, 1, 0, 0, 1);
         textureMatrixInv.preConcat(flipV);
         textureMatrixInv.preScale(1.0f / layerWidth, 1.0f / layerHeight);
-        textureMatrixInv.postScale(layerWidth, layerHeight);
+        textureMatrixInv.postScale(layerImage->width(), layerImage->height());
         SkMatrix textureMatrix;
         if (!textureMatrixInv.invert(&textureMatrix)) {
             textureMatrix = textureMatrixInv;
@@ -95,6 +72,9 @@ bool LayerDrawable::DrawLayer(GrContext* context, SkCanvas* canvas, Layer* layer
         paint.setAlpha(layer->getAlpha());
         paint.setBlendMode(layer->getMode());
         paint.setColorFilter(layer->getColorSpaceWithFilter());
+        if (layer->getForceFilter()) {
+            paint.setFilterQuality(kLow_SkFilterQuality);
+        }
 
         const bool nonIdentityMatrix = !matrix.isIdentity();
         if (nonIdentityMatrix) {
diff --git a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
index 78f5a71dee3b..2ae37233098e 100644
--- a/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
+++ b/libs/hwui/pipeline/skia/SkiaOpenGLPipeline.cpp
@@ -17,7 +17,6 @@
 #include "SkiaOpenGLPipeline.h"
 
 #include "DeferredLayerUpdater.h"
-#include "GlLayer.h"
 #include "LayerDrawable.h"
 #include "SkiaPipeline.h"
 #include "SkiaProfileRenderer.h"
@@ -187,18 +186,9 @@ bool SkiaOpenGLPipeline::copyLayerInto(DeferredLayerUpdater* deferredLayer, SkBi
     return false;
 }
 
-static Layer* createLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight,
-                          sk_sp<SkColorFilter> colorFilter, int alpha, SkBlendMode mode,
-                          bool blend) {
-    GlLayer* layer =
-            new GlLayer(renderState, layerWidth, layerHeight, colorFilter, alpha, mode, blend);
-    layer->generateTexture();
-    return layer;
-}
-
 DeferredLayerUpdater* SkiaOpenGLPipeline::createTextureLayer() {
     mRenderThread.requireGlContext();
-    return new DeferredLayerUpdater(mRenderThread.renderState(), createLayer, Layer::Api::OpenGL);
+    return new DeferredLayerUpdater(mRenderThread.renderState());
 }
 
 void SkiaOpenGLPipeline::onStop() {
diff --git a/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp b/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp
index b2519fe59891..5f2eee4523fc 100644
--- a/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp
+++ b/libs/hwui/pipeline/skia/SkiaVulkanPipeline.cpp
@@ -20,7 +20,6 @@
 #include "Readback.h"
 #include "SkiaPipeline.h"
 #include "SkiaProfileRenderer.h"
-#include "VkLayer.h"
 #include "renderstate/RenderState.h"
 #include "renderthread/Frame.h"
 
@@ -114,16 +113,10 @@ bool SkiaVulkanPipeline::copyLayerInto(DeferredLayerUpdater* layer, SkBitmap* bi
     return false;
 }
 
-static Layer* createLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight,
-                          sk_sp<SkColorFilter> colorFilter, int alpha, SkBlendMode mode,
-                          bool blend) {
-    return new VkLayer(renderState, layerWidth, layerHeight, colorFilter, alpha, mode, blend);
-}
-
 DeferredLayerUpdater* SkiaVulkanPipeline::createTextureLayer() {
     mVkManager.initialize();
 
-    return new DeferredLayerUpdater(mRenderThread.renderState(), createLayer, Layer::Api::Vulkan);
+    return new DeferredLayerUpdater(mRenderThread.renderState());
 }
 
 void SkiaVulkanPipeline::onStop() {}
diff --git a/libs/hwui/renderstate/PixelBufferState.cpp b/libs/hwui/renderstate/PixelBufferState.cpp
deleted file mode 100644
index 3a6efb833c47..000000000000
--- a/libs/hwui/renderstate/PixelBufferState.cpp
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "renderstate/PixelBufferState.h"
-
-namespace android {
-namespace uirenderer {
-
-PixelBufferState::PixelBufferState() : mCurrentPixelBuffer(0) {}
-
-bool PixelBufferState::bind(GLuint buffer) {
-    if (mCurrentPixelBuffer != buffer) {
-        glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer);
-        mCurrentPixelBuffer = buffer;
-        return true;
-    }
-    return false;
-}
-
-bool PixelBufferState::unbind() {
-    if (mCurrentPixelBuffer) {
-        glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
-        mCurrentPixelBuffer = 0;
-        return true;
-    }
-    return false;
-}
-
-} /* namespace uirenderer */
-} /* namespace android */
diff --git a/libs/hwui/renderstate/PixelBufferState.h b/libs/hwui/renderstate/PixelBufferState.h
deleted file mode 100644
index f7ae6c575f6a..000000000000
--- a/libs/hwui/renderstate/PixelBufferState.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#ifndef RENDERSTATE_PIXELBUFFERSTATE_H
-#define RENDERSTATE_PIXELBUFFERSTATE_H
-
-#include <GLES3/gl3.h>
-
-namespace android {
-namespace uirenderer {
-
-class PixelBufferState {
-    friend class Caches;  // TODO: move to RenderState
-public:
-    bool bind(GLuint buffer);
-    bool unbind();
-
-private:
-    PixelBufferState();
-    GLuint mCurrentPixelBuffer;
-};
-
-} /* namespace uirenderer */
-} /* namespace android */
-
-#endif  // RENDERSTATE_PIXELBUFFERSTATE_H
diff --git a/libs/hwui/renderstate/RenderState.cpp b/libs/hwui/renderstate/RenderState.cpp
index 3be84f588a20..b524bcb096da 100644
--- a/libs/hwui/renderstate/RenderState.cpp
+++ b/libs/hwui/renderstate/RenderState.cpp
@@ -16,8 +16,6 @@
 #include "renderstate/RenderState.h"
 #include <GpuMemoryTracker.h>
 #include "DeferredLayerUpdater.h"
-#include "GlLayer.h"
-#include "VkLayer.h"
 #include "Snapshot.h"
 
 #include "renderthread/CanvasContext.h"
@@ -39,44 +37,11 @@ RenderState::RenderState(renderthread::RenderThread& thread)
 RenderState::~RenderState() {
 }
 
-void RenderState::onGLContextCreated() {
+void RenderState::onContextCreated() {
     GpuMemoryTracker::onGpuContextCreated();
-
-    // This is delayed because the first access of Caches makes GL calls
-    if (!mCaches) {
-        mCaches = &Caches::createInstance(*this);
-    }
-    mCaches->init();
 }
 
-static void layerLostGlContext(Layer* layer) {
-    LOG_ALWAYS_FATAL_IF(layer->getApi() != Layer::Api::OpenGL,
-                        "layerLostGlContext on non GL layer");
-    static_cast<GlLayer*>(layer)->onGlContextLost();
-}
-
-void RenderState::onGLContextDestroyed() {
-    // TODO: reset all cached state in state objects
-    std::for_each(mActiveLayers.begin(), mActiveLayers.end(), layerLostGlContext);
-
-    mCaches->terminate();
-
-    destroyLayersInUpdater();
-    GpuMemoryTracker::onGpuContextDestroyed();
-}
-
-void RenderState::onVkContextCreated() {
-    GpuMemoryTracker::onGpuContextCreated();
-}
-
-static void layerDestroyedVkContext(Layer* layer) {
-    LOG_ALWAYS_FATAL_IF(layer->getApi() != Layer::Api::Vulkan,
-                        "layerLostVkContext on non Vulkan layer");
-    static_cast<VkLayer*>(layer)->onVkContextDestroyed();
-}
-
-void RenderState::onVkContextDestroyed() {
-    std::for_each(mActiveLayers.begin(), mActiveLayers.end(), layerDestroyedVkContext);
+void RenderState::onContextDestroyed() {
     destroyLayersInUpdater();
     GpuMemoryTracker::onGpuContextDestroyed();
 }
@@ -85,10 +50,6 @@ GrContext* RenderState::getGrContext() const {
     return mRenderThread.getGrContext();
 }
 
-void RenderState::flush(Caches::FlushMode mode) {
-    if (mCaches) mCaches->flush(mode);
-}
-
 void RenderState::onBitmapDestroyed(uint32_t pixelRefId) {
     // DEAD CODE
 }
@@ -126,42 +87,6 @@ void RenderState::deleteFramebuffer(GLuint fbo) {
     glDeleteFramebuffers(1, &fbo);
 }
 
-void RenderState::invokeFunctor(Functor* functor, DrawGlInfo::Mode mode, DrawGlInfo* info) {
-    if (mode == DrawGlInfo::kModeProcessNoContext) {
-        // If there's no context we don't need to interrupt as there's
-        // no gl state to save/restore
-        (*functor)(mode, info);
-    } else {
-        interruptForFunctorInvoke();
-        (*functor)(mode, info);
-        resumeFromFunctorInvoke();
-    }
-}
-
-void RenderState::interruptForFunctorInvoke() {
-    mCaches->textureState().resetActiveTexture();
-    debugOverdraw(false, false);
-    // TODO: We need a way to know whether the functor is sRGB aware (b/32072673)
-    if (mCaches->extensions().hasLinearBlending() && mCaches->extensions().hasSRGBWriteControl()) {
-        glDisable(GL_FRAMEBUFFER_SRGB_EXT);
-    }
-}
-
-void RenderState::resumeFromFunctorInvoke() {
-    if (mCaches->extensions().hasLinearBlending() && mCaches->extensions().hasSRGBWriteControl()) {
-        glEnable(GL_FRAMEBUFFER_SRGB_EXT);
-    }
-
-    glViewport(0, 0, mViewportWidth, mViewportHeight);
-    glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
-    debugOverdraw(false, false);
-
-    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
-
-    mCaches->textureState().activateTexture(0);
-    mCaches->textureState().resetBoundTextures();
-}
-
 void RenderState::debugOverdraw(bool enable, bool clear) {
     // DEAD CODE
 }
@@ -190,5 +115,9 @@ void RenderState::dump() {
     // DEAD CODE
 }
 
+renderthread::RenderThread& RenderState::getRenderThread() {
+    return mRenderThread;
+}
+
 } /* namespace uirenderer */
 } /* namespace android */
diff --git a/libs/hwui/renderstate/RenderState.h b/libs/hwui/renderstate/RenderState.h
index 97785a46dcd7..f39aa4b96547 100644
--- a/libs/hwui/renderstate/RenderState.h
+++ b/libs/hwui/renderstate/RenderState.h
@@ -16,8 +16,6 @@
 #ifndef RENDERSTATE_H
 #define RENDERSTATE_H
 
-#include "Caches.h"
-#include "renderstate/PixelBufferState.h"
 #include "utils/Macros.h"
 
 #include <GLES2/gl2.h>
@@ -34,7 +32,6 @@ class GrContext;
 namespace android {
 namespace uirenderer {
 
-class Caches;
 class Layer;
 class DeferredLayerUpdater;
 
@@ -44,22 +41,16 @@ class CanvasContext;
 class RenderThread;
 }
 
-// TODO: Replace Cache's GL state tracking with this. For now it's more a thin
 // wrapper of Caches for users to migrate to.
 class RenderState {
     PREVENT_COPY_AND_ASSIGN(RenderState);
     friend class renderthread::RenderThread;
-    friend class Caches;
     friend class renderthread::CacheManager;
 
 public:
-    void onGLContextCreated();
-    void onGLContextDestroyed();
+    void onContextCreated();
+    void onContextDestroyed();
 
-    void onVkContextCreated();
-    void onVkContextDestroyed();
-
-    void flush(Caches::FlushMode flushMode);
     void onBitmapDestroyed(uint32_t pixelRefId);
 
     void setViewport(GLsizei width, GLsizei height);
@@ -70,8 +61,6 @@ public:
     GLuint createFramebuffer();
     void deleteFramebuffer(GLuint fbo);
 
-    void invokeFunctor(Functor* functor, DrawGlInfo::Mode mode, DrawGlInfo* info);
-
     void debugOverdraw(bool enable, bool clear);
 
     void registerLayer(Layer* layer) { mActiveLayers.insert(layer); }
@@ -101,16 +90,15 @@ public:
 
     void dump();
 
+    renderthread::RenderThread& getRenderThread();
+
 private:
-    void interruptForFunctorInvoke();
-    void resumeFromFunctorInvoke();
     void destroyLayersInUpdater();
 
     explicit RenderState(renderthread::RenderThread& thread);
     ~RenderState();
 
     renderthread::RenderThread& mRenderThread;
-    Caches* mCaches = nullptr;
 
     std::set<Layer*> mActiveLayers;
     std::set<DeferredLayerUpdater*> mActiveLayerUpdaters;
diff --git a/libs/hwui/renderstate/TextureState.cpp b/libs/hwui/renderstate/TextureState.cpp
deleted file mode 100644
index 470b4f5de97f..000000000000
--- a/libs/hwui/renderstate/TextureState.cpp
+++ /dev/null
@@ -1,147 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "renderstate/TextureState.h"
-
-#include "Caches.h"
-#include "utils/TraceUtils.h"
-
-#include <GLES3/gl3.h>
-#include <SkBitmap.h>
-#include <SkCanvas.h>
-#include <memory>
-
-namespace android {
-namespace uirenderer {
-
-// Width of mShadowLutTexture, defines how accurate the shadow alpha lookup table is
-static const int SHADOW_LUT_SIZE = 128;
-
-// Must define as many texture units as specified by kTextureUnitsCount
-const GLenum kTextureUnits[] = {GL_TEXTURE0, GL_TEXTURE1, GL_TEXTURE2, GL_TEXTURE3};
-
-TextureState::TextureState() : mTextureUnit(0) {
-    glActiveTexture(kTextureUnits[0]);
-    resetBoundTextures();
-
-    GLint maxTextureUnits;
-    glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &maxTextureUnits);
-    LOG_ALWAYS_FATAL_IF(maxTextureUnits < kTextureUnitsCount,
-                        "At least %d texture units are required!", kTextureUnitsCount);
-    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-}
-
-TextureState::~TextureState() {
-    if (mShadowLutTexture != nullptr) {
-        mShadowLutTexture->deleteTexture();
-    }
-}
-
-/**
- * Maps shadow geometry 'alpha' varying (1 for darkest, 0 for transparent) to
- * darkness at that spot. Input values of 0->1 should be mapped within the same
- * range, but can affect the curve for a different visual falloff.
- *
- * This is used to populate the shadow LUT texture for quick lookup in the
- * shadow shader.
- */
-static float computeShadowOpacity(float ratio) {
-    // exponential falloff function provided by UX
-    float val = 1 - ratio;
-    return exp(-val * val * 4.0) - 0.018;
-}
-
-void TextureState::constructTexture(Caches& caches) {
-    if (mShadowLutTexture == nullptr) {
-        mShadowLutTexture.reset(new Texture(caches));
-
-        unsigned char bytes[SHADOW_LUT_SIZE];
-        for (int i = 0; i < SHADOW_LUT_SIZE; i++) {
-            float inputRatio = i / (SHADOW_LUT_SIZE - 1.0f);
-            bytes[i] = computeShadowOpacity(inputRatio) * 255;
-        }
-        mShadowLutTexture->upload(GL_ALPHA, SHADOW_LUT_SIZE, 1, GL_ALPHA, GL_UNSIGNED_BYTE, &bytes);
-        mShadowLutTexture->setFilter(GL_LINEAR);
-        mShadowLutTexture->setWrap(GL_CLAMP_TO_EDGE);
-    }
-}
-
-void TextureState::activateTexture(GLuint textureUnit) {
-    LOG_ALWAYS_FATAL_IF(textureUnit >= kTextureUnitsCount,
-                        "Tried to use texture unit index %d, only %d exist", textureUnit,
-                        kTextureUnitsCount);
-    if (mTextureUnit != textureUnit) {
-        glActiveTexture(kTextureUnits[textureUnit]);
-        mTextureUnit = textureUnit;
-    }
-}
-
-void TextureState::resetActiveTexture() {
-    mTextureUnit = -1;
-}
-
-void TextureState::bindTexture(GLuint texture) {
-    if (mBoundTextures[mTextureUnit] != texture) {
-        glBindTexture(GL_TEXTURE_2D, texture);
-        mBoundTextures[mTextureUnit] = texture;
-    }
-}
-
-void TextureState::bindTexture(GLenum target, GLuint texture) {
-    if (target == GL_TEXTURE_2D) {
-        bindTexture(texture);
-    } else {
-        // GLConsumer directly calls glBindTexture() with
-        // target=GL_TEXTURE_EXTERNAL_OES, don't cache this target
-        // since the cached state could be stale
-        glBindTexture(target, texture);
-    }
-}
-
-void TextureState::deleteTexture(GLuint texture) {
-    // When glDeleteTextures() is called on a currently bound texture,
-    // OpenGL ES specifies that the texture is then considered unbound
-    // Consider the following series of calls:
-    //
-    // glGenTextures -> creates texture name 2
-    // glBindTexture(2)
-    // glDeleteTextures(2) -> 2 is now unbound
-    // glGenTextures -> can return 2 again
-    //
-    // If we don't call glBindTexture(2) after the second glGenTextures
-    // call, any texture operation will be performed on the default
-    // texture (name=0)
-
-    unbindTexture(texture);
-
-    glDeleteTextures(1, &texture);
-}
-
-void TextureState::resetBoundTextures() {
-    for (int i = 0; i < kTextureUnitsCount; i++) {
-        mBoundTextures[i] = 0;
-    }
-}
-
-void TextureState::unbindTexture(GLuint texture) {
-    for (int i = 0; i < kTextureUnitsCount; i++) {
-        if (mBoundTextures[i] == texture) {
-            mBoundTextures[i] = 0;
-        }
-    }
-}
-
-} /* namespace uirenderer */
-} /* namespace android */
diff --git a/libs/hwui/renderstate/TextureState.h b/libs/hwui/renderstate/TextureState.h
deleted file mode 100644
index f1996d431fa2..000000000000
--- a/libs/hwui/renderstate/TextureState.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#ifndef RENDERSTATE_TEXTURESTATE_H
-#define RENDERSTATE_TEXTURESTATE_H
-
-#include "Texture.h"
-#include "Vertex.h"
-
-#include <GLES2/gl2.h>
-#include <GLES2/gl2ext.h>
-#include <memory>
-
-namespace android {
-namespace uirenderer {
-
-class Texture;
-
-class TextureState {
-    friend class Caches;  // TODO: move to RenderState
-public:
-    void constructTexture(Caches& caches);
-
-    /**
-     * Activate the specified texture unit. The texture unit must
-     * be specified using an integer number (0 for GL_TEXTURE0 etc.)
-     */
-    void activateTexture(GLuint textureUnit);
-
-    /**
-     * Invalidate the cached value of the active texture unit.
-     */
-    void resetActiveTexture();
-
-    /**
-     * Binds the specified texture as a GL_TEXTURE_2D texture.
-     * All texture bindings must be performed with this method or
-     * bindTexture(GLenum, GLuint).
-     */
-    void bindTexture(GLuint texture);
-
-    /**
-     * Binds the specified texture with the specified render target.
-     * All texture bindings must be performed with this method or
-     * bindTexture(GLuint).
-     */
-    void bindTexture(GLenum target, GLuint texture);
-
-    /**
-     * Deletes the specified texture and clears it from the cache
-     * of bound textures.
-     * All textures must be deleted using this method.
-     */
-    void deleteTexture(GLuint texture);
-
-    /**
-     * Signals that the cache of bound textures should be cleared.
-     * Other users of the context may have altered which textures are bound.
-     */
-    void resetBoundTextures();
-
-    /**
-     * Clear the cache of bound textures.
-     */
-    void unbindTexture(GLuint texture);
-
-    Texture* getShadowLutTexture() { return mShadowLutTexture.get(); }
-
-private:
-    // total number of texture units available for use
-    static const int kTextureUnitsCount = 4;
-
-    TextureState();
-    ~TextureState();
-    GLuint mTextureUnit;
-
-    // Caches texture bindings for the GL_TEXTURE_2D target
-    GLuint mBoundTextures[kTextureUnitsCount];
-
-    std::unique_ptr<Texture> mShadowLutTexture;
-};
-
-} /* namespace uirenderer */
-} /* namespace android */
-
-#endif  // RENDERSTATE_BLEND_H
diff --git a/libs/hwui/renderthread/CacheManager.cpp b/libs/hwui/renderthread/CacheManager.cpp
index 82bfc4943526..7acc44ca65b7 100644
--- a/libs/hwui/renderthread/CacheManager.cpp
+++ b/libs/hwui/renderthread/CacheManager.cpp
@@ -21,6 +21,7 @@
 #include "RenderThread.h"
 #include "pipeline/skia/ShaderCache.h"
 #include "pipeline/skia/SkiaMemoryTracer.h"
+#include "Properties.h"
 #include "renderstate/RenderState.h"
 
 #include <GrContextOptions.h>
@@ -215,11 +216,12 @@ void CacheManager::dumpMemoryUsage(String8& log, const RenderState* renderState)
             log.appendFormat("  Layer Info:\n");
         }
 
+        const char* layerType = Properties::getRenderPipelineType() == RenderPipelineType::SkiaGL
+                ? "GlLayer" : "VkLayer";
         size_t layerMemoryTotal = 0;
         for (std::set<Layer*>::iterator it = renderState->mActiveLayers.begin();
              it != renderState->mActiveLayers.end(); it++) {
             const Layer* layer = *it;
-            const char* layerType = layer->getApi() == Layer::Api::OpenGL ? "GlLayer" : "VkLayer";
             log.appendFormat("    %s size %dx%d\n", layerType, layer->getWidth(),
                              layer->getHeight());
             layerMemoryTotal += layer->getWidth() * layer->getHeight() * 4;
diff --git a/libs/hwui/renderthread/CanvasContext.cpp b/libs/hwui/renderthread/CanvasContext.cpp
index 5d7252304bf2..8b07d1dadeb6 100644
--- a/libs/hwui/renderthread/CanvasContext.cpp
+++ b/libs/hwui/renderthread/CanvasContext.cpp
@@ -18,7 +18,6 @@
 #include <GpuMemoryTracker.h>
 
 #include "AnimationContext.h"
-#include "Caches.h"
 #include "EglManager.h"
 #include "Frame.h"
 #include "LayerUpdateQueue.h"
@@ -495,13 +494,6 @@ void CanvasContext::draw() {
     }
 
     GpuMemoryTracker::onFrameCompleted();
-#ifdef BUGREPORT_FONT_CACHE_USAGE
-    auto renderType = Properties::getRenderPipelineType();
-    if (RenderPipelineType::OpenGL == renderType) {
-        Caches& caches = Caches::getInstance();
-        caches.fontRenderer.getFontRenderer().historyTracker().frameCompleted();
-    }
-#endif
 }
 
 // Called by choreographer to do an RT-driven animation
diff --git a/libs/hwui/renderthread/EglManager.cpp b/libs/hwui/renderthread/EglManager.cpp
index cd21822df5b1..5f8d7ad3373a 100644
--- a/libs/hwui/renderthread/EglManager.cpp
+++ b/libs/hwui/renderthread/EglManager.cpp
@@ -18,6 +18,7 @@
 
 #include <cutils/properties.h>
 #include <log/log.h>
+#include <private/gui/SyncFeatures.h>
 #include <utils/Trace.h>
 #include "utils/StringUtils.h"
 
@@ -464,6 +465,109 @@ bool EglManager::setPreserveBuffer(EGLSurface surface, bool preserve) {
     return preserved;
 }
 
+status_t EglManager::fenceWait(sp<Fence>& fence) {
+    if (!hasEglContext()) {
+        ALOGE("EglManager::fenceWait: EGLDisplay not initialized");
+        return INVALID_OPERATION;
+    }
+
+    if (SyncFeatures::getInstance().useWaitSync() &&
+        SyncFeatures::getInstance().useNativeFenceSync()) {
+        // Block GPU on the fence.
+        // Create an EGLSyncKHR from the current fence.
+        int fenceFd = fence->dup();
+        if (fenceFd == -1) {
+            ALOGE("EglManager::fenceWait: error dup'ing fence fd: %d", errno);
+            return -errno;
+        }
+        EGLint attribs[] = {
+            EGL_SYNC_NATIVE_FENCE_FD_ANDROID, fenceFd,
+            EGL_NONE
+        };
+        EGLSyncKHR sync = eglCreateSyncKHR(mEglDisplay,
+                EGL_SYNC_NATIVE_FENCE_ANDROID, attribs);
+        if (sync == EGL_NO_SYNC_KHR) {
+            close(fenceFd);
+            ALOGE("EglManager::fenceWait: error creating EGL fence: %#x", eglGetError());
+            return UNKNOWN_ERROR;
+        }
+
+        // XXX: The spec draft is inconsistent as to whether this should
+        // return an EGLint or void.  Ignore the return value for now, as
+        // it's not strictly needed.
+        eglWaitSyncKHR(mEglDisplay, sync, 0);
+        EGLint eglErr = eglGetError();
+        eglDestroySyncKHR(mEglDisplay, sync);
+        if (eglErr != EGL_SUCCESS) {
+            ALOGE("EglManager::fenceWait: error waiting for EGL fence: %#x", eglErr);
+            return UNKNOWN_ERROR;
+        }
+    } else {
+        // Block CPU on the fence.
+        status_t err = fence->waitForever("EglManager::fenceWait");
+        if (err != NO_ERROR) {
+            ALOGE("EglManager::fenceWait: error waiting for fence: %d", err);
+            return err;
+        }
+    }
+    return OK;
+}
+
+status_t EglManager::createReleaseFence(bool useFenceSync, EGLSyncKHR* eglFence,
+        sp<Fence>& nativeFence) {
+    if (!hasEglContext()) {
+        ALOGE("EglManager::createReleaseFence: EGLDisplay not initialized");
+        return INVALID_OPERATION;
+    }
+
+    if (SyncFeatures::getInstance().useNativeFenceSync()) {
+        EGLSyncKHR sync = eglCreateSyncKHR(mEglDisplay,
+                EGL_SYNC_NATIVE_FENCE_ANDROID, nullptr);
+        if (sync == EGL_NO_SYNC_KHR) {
+            ALOGE("EglManager::createReleaseFence: error creating EGL fence: %#x",
+                    eglGetError());
+            return UNKNOWN_ERROR;
+        }
+        glFlush();
+        int fenceFd = eglDupNativeFenceFDANDROID(mEglDisplay, sync);
+        eglDestroySyncKHR(mEglDisplay, sync);
+        if (fenceFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
+            ALOGE("EglManager::createReleaseFence: error dup'ing native fence "
+                    "fd: %#x", eglGetError());
+            return UNKNOWN_ERROR;
+        }
+        nativeFence = new Fence(fenceFd);
+        *eglFence = EGL_NO_SYNC_KHR;
+    } else if (useFenceSync && SyncFeatures::getInstance().useFenceSync()) {
+        if (*eglFence != EGL_NO_SYNC_KHR) {
+            // There is already a fence for the current slot.  We need to
+            // wait on that before replacing it with another fence to
+            // ensure that all outstanding buffer accesses have completed
+            // before the producer accesses it.
+            EGLint result = eglClientWaitSyncKHR(mEglDisplay, *eglFence, 0, 1000000000);
+            if (result == EGL_FALSE) {
+                ALOGE("EglManager::createReleaseFence: error waiting for previous fence: %#x",
+                        eglGetError());
+                return UNKNOWN_ERROR;
+            } else if (result == EGL_TIMEOUT_EXPIRED_KHR) {
+                ALOGE("EglManager::createReleaseFence: timeout waiting for previous fence");
+                return TIMED_OUT;
+            }
+            eglDestroySyncKHR(mEglDisplay, *eglFence);
+        }
+
+        // Create a fence for the outstanding accesses in the current
+        // OpenGL ES context.
+        *eglFence = eglCreateSyncKHR(mEglDisplay, EGL_SYNC_FENCE_KHR, nullptr);
+        if (*eglFence == EGL_NO_SYNC_KHR) {
+            ALOGE("EglManager::createReleaseFence: error creating fence: %#x", eglGetError());
+            return UNKNOWN_ERROR;
+        }
+        glFlush();
+    }
+    return OK;
+}
+
 } /* namespace renderthread */
 } /* namespace uirenderer */
 } /* namespace android */
diff --git a/libs/hwui/renderthread/EglManager.h b/libs/hwui/renderthread/EglManager.h
index 8e8bb8b68a1c..507673adf26e 100644
--- a/libs/hwui/renderthread/EglManager.h
+++ b/libs/hwui/renderthread/EglManager.h
@@ -17,8 +17,10 @@
 #define EGLMANAGER_H
 
 #include <EGL/egl.h>
+#include <EGL/eglext.h>
 #include <SkRect.h>
 #include <cutils/compiler.h>
+#include <ui/Fence.h>
 #include <ui/GraphicBuffer.h>
 #include <utils/StrongPointer.h>
 
@@ -66,6 +68,14 @@ public:
 
     EGLDisplay eglDisplay() const { return mEglDisplay; }
 
+    // Inserts a wait on fence command into the OpenGL ES command stream. If EGL extension
+    // support is missing, block the CPU on the fence.
+    status_t fenceWait(sp<Fence>& fence);
+
+    // Creates a fence that is signaled, when all the pending GL commands are flushed.
+    // Depending on installed extensions, the result is either Android native fence or EGL fence.
+    status_t createReleaseFence(bool useFenceSync, EGLSyncKHR* eglFence, sp<Fence>& nativeFence);
+
 private:
 
     void initExtensions();
diff --git a/libs/hwui/renderthread/RenderThread.cpp b/libs/hwui/renderthread/RenderThread.cpp
index 36ffaee2458b..2322fbf21f27 100644
--- a/libs/hwui/renderthread/RenderThread.cpp
+++ b/libs/hwui/renderthread/RenderThread.cpp
@@ -178,7 +178,7 @@ void RenderThread::requireGlContext() {
         return;
     }
     mEglManager->initialize();
-    renderState().onGLContextCreated();
+    renderState().onContextCreated();
 
 #ifdef HWUI_GLES_WRAP_ENABLED
     debug::GlesDriver* driver = debug::GlesDriver::get();
@@ -202,7 +202,7 @@ void RenderThread::requireGlContext() {
 void RenderThread::destroyGlContext() {
     if (mEglManager->hasEglContext()) {
         setGrContext(nullptr);
-        renderState().onGLContextDestroyed();
+        renderState().onContextDestroyed();
         mEglManager->destroy();
     }
 }
diff --git a/libs/hwui/renderthread/VulkanManager.cpp b/libs/hwui/renderthread/VulkanManager.cpp
index cc4b87adfd7b..038e13c513fd 100644
--- a/libs/hwui/renderthread/VulkanManager.cpp
+++ b/libs/hwui/renderthread/VulkanManager.cpp
@@ -40,7 +40,7 @@ namespace renderthread {
 VulkanManager::VulkanManager(RenderThread& thread) : mRenderThread(thread) {}
 
 void VulkanManager::destroy() {
-    mRenderThread.renderState().onVkContextDestroyed();
+    mRenderThread.renderState().onContextDestroyed();
     mRenderThread.setGrContext(nullptr);
 
     if (VK_NULL_HANDLE != mCommandPool) {
@@ -405,7 +405,7 @@ void VulkanManager::initialize() {
         mSwapBehavior = SwapBehavior::BufferAge;
     }
 
-    mRenderThread.renderState().onVkContextCreated();
+    mRenderThread.renderState().onContextCreated();
 }
 
 // Returns the next BackbufferInfo to use for the next draw. The function will make sure all
@@ -982,6 +982,22 @@ int VulkanManager::getAge(VulkanSurface* surface) {
     return surface->mCurrentTime - lastUsed;
 }
 
+status_t VulkanManager::fenceWait(sp<Fence>& fence) {
+    //TODO: Insert a wait on fence command into the Vulkan command buffer.
+    // Block CPU on the fence.
+    status_t err = fence->waitForever("VulkanManager::fenceWait");
+    if (err != NO_ERROR) {
+        ALOGE("VulkanManager::fenceWait: error waiting for fence: %d", err);
+        return err;
+    }
+    return OK;
+}
+
+status_t VulkanManager::createReleaseFence(sp<Fence>& nativeFence) {
+    //TODO: Create a fence that is signaled, when all the pending Vulkan commands are flushed.
+    return OK;
+}
+
 } /* namespace renderthread */
 } /* namespace uirenderer */
 } /* namespace android */
diff --git a/libs/hwui/renderthread/VulkanManager.h b/libs/hwui/renderthread/VulkanManager.h
index 5524c39d7a0c..ebc11a50685e 100644
--- a/libs/hwui/renderthread/VulkanManager.h
+++ b/libs/hwui/renderthread/VulkanManager.h
@@ -23,6 +23,8 @@
 #include <vulkan/vulkan.h>
 
 #include <SkSurface.h>
+#include <ui/Fence.h>
+#include <utils/StrongPointer.h>
 #include <vk/GrVkBackendContext.h>
 
 class GrVkExtensions;
@@ -110,6 +112,12 @@ public:
     // Presents the current VkImage.
     void swapBuffers(VulkanSurface* surface);
 
+    // Inserts a wait on fence command into the Vulkan command buffer.
+    status_t fenceWait(sp<Fence>& fence);
+
+    // Creates a fence that is signaled, when all the pending Vulkan commands are flushed.
+    status_t createReleaseFence(sp<Fence>& nativeFence);
+
 private:
     friend class RenderThread;
 
diff --git a/libs/hwui/surfacetexture/EGLConsumer.cpp b/libs/hwui/surfacetexture/EGLConsumer.cpp
new file mode 100644
index 000000000000..c8220c6cb0d4
--- /dev/null
+++ b/libs/hwui/surfacetexture/EGLConsumer.cpp
@@ -0,0 +1,675 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <inttypes.h>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <cutils/compiler.h>
+#include <gui/BufferItem.h>
+#include <gui/BufferQueue.h>
+#include <private/gui/SyncFeatures.h>
+#include "EGLConsumer.h"
+#include "SurfaceTexture.h"
+
+#include <utils/Log.h>
+#include <utils/String8.h>
+#include <utils/Trace.h>
+
+#define PROT_CONTENT_EXT_STR "EGL_EXT_protected_content"
+#define EGL_PROTECTED_CONTENT_EXT 0x32C0
+
+namespace android {
+
+// Macros for including the SurfaceTexture name in log messages
+#define EGC_LOGV(x, ...) ALOGV("[%s] " x, st.mName.string(), ##__VA_ARGS__)
+#define EGC_LOGD(x, ...) ALOGD("[%s] " x, st.mName.string(), ##__VA_ARGS__)
+#define EGC_LOGW(x, ...) ALOGW("[%s] " x, st.mName.string(), ##__VA_ARGS__)
+#define EGC_LOGE(x, ...) ALOGE("[%s] " x, st.mName.string(), ##__VA_ARGS__)
+
+static const struct {
+    uint32_t width, height;
+    char const* bits;
+} kDebugData = {15, 12,
+                "_______________"
+                "_______________"
+                "_____XX_XX_____"
+                "__X_X_____X_X__"
+                "__X_XXXXXXX_X__"
+                "__XXXXXXXXXXX__"
+                "___XX_XXX_XX___"
+                "____XXXXXXX____"
+                "_____X___X_____"
+                "____X_____X____"
+                "_______________"
+                "_______________"};
+
+Mutex EGLConsumer::sStaticInitLock;
+sp<GraphicBuffer> EGLConsumer::sReleasedTexImageBuffer;
+
+static bool hasEglProtectedContentImpl() {
+    EGLDisplay dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    const char* exts = eglQueryString(dpy, EGL_EXTENSIONS);
+    size_t cropExtLen = strlen(PROT_CONTENT_EXT_STR);
+    size_t extsLen = strlen(exts);
+    bool equal = !strcmp(PROT_CONTENT_EXT_STR, exts);
+    bool atStart = !strncmp(PROT_CONTENT_EXT_STR " ", exts, cropExtLen + 1);
+    bool atEnd = (cropExtLen + 1) < extsLen &&
+                 !strcmp(" " PROT_CONTENT_EXT_STR, exts + extsLen - (cropExtLen + 1));
+    bool inMiddle = strstr(exts, " " PROT_CONTENT_EXT_STR " ");
+    return equal || atStart || atEnd || inMiddle;
+}
+
+static bool hasEglProtectedContent() {
+    // Only compute whether the extension is present once the first time this
+    // function is called.
+    static bool hasIt = hasEglProtectedContentImpl();
+    return hasIt;
+}
+
+EGLConsumer::EGLConsumer() : mEglDisplay(EGL_NO_DISPLAY), mEglContext(EGL_NO_CONTEXT) {}
+
+status_t EGLConsumer::updateTexImage(SurfaceTexture& st) {
+    // Make sure the EGL state is the same as in previous calls.
+    status_t err = checkAndUpdateEglStateLocked(st);
+    if (err != NO_ERROR) {
+        return err;
+    }
+
+    BufferItem item;
+
+    // Acquire the next buffer.
+    // In asynchronous mode the list is guaranteed to be one buffer
+    // deep, while in synchronous mode we use the oldest buffer.
+    err = st.acquireBufferLocked(&item, 0);
+    if (err != NO_ERROR) {
+        if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
+            // We always bind the texture even if we don't update its contents.
+            EGC_LOGV("updateTexImage: no buffers were available");
+            glBindTexture(st.mTexTarget, st.mTexName);
+            err = NO_ERROR;
+        } else {
+            EGC_LOGE("updateTexImage: acquire failed: %s (%d)", strerror(-err), err);
+        }
+        return err;
+    }
+
+    // Release the previous buffer.
+    err = updateAndReleaseLocked(item, nullptr, st);
+    if (err != NO_ERROR) {
+        // We always bind the texture.
+        glBindTexture(st.mTexTarget, st.mTexName);
+        return err;
+    }
+
+    // Bind the new buffer to the GL texture, and wait until it's ready.
+    return bindTextureImageLocked(st);
+}
+
+status_t EGLConsumer::releaseTexImage(SurfaceTexture& st) {
+    // Make sure the EGL state is the same as in previous calls.
+    status_t err = NO_ERROR;
+
+    // if we're detached, no need to validate EGL's state -- we won't use it.
+    if (st.mOpMode == SurfaceTexture::OpMode::attachedToGL) {
+        err = checkAndUpdateEglStateLocked(st, true);
+        if (err != NO_ERROR) {
+            return err;
+        }
+    }
+
+    // Update the EGLConsumer state.
+    int buf = st.mCurrentTexture;
+    if (buf != BufferQueue::INVALID_BUFFER_SLOT) {
+        EGC_LOGV("releaseTexImage: (slot=%d, mOpMode=%d)", buf, (int)st.mOpMode);
+
+        // if we're detached, we just use the fence that was created in detachFromContext()
+        // so... basically, nothing more to do here.
+        if (st.mOpMode == SurfaceTexture::OpMode::attachedToGL) {
+            // Do whatever sync ops we need to do before releasing the slot.
+            err = syncForReleaseLocked(mEglDisplay, st);
+            if (err != NO_ERROR) {
+                EGC_LOGE("syncForReleaseLocked failed (slot=%d), err=%d", buf, err);
+                return err;
+            }
+        }
+
+        err = st.releaseBufferLocked(buf, st.mSlots[buf].mGraphicBuffer, mEglDisplay,
+                                     EGL_NO_SYNC_KHR);
+        if (err < NO_ERROR) {
+            EGC_LOGE("releaseTexImage: failed to release buffer: %s (%d)", strerror(-err), err);
+            return err;
+        }
+
+        if (mReleasedTexImage == nullptr) {
+            mReleasedTexImage = new EglImage(getDebugTexImageBuffer());
+        }
+
+        st.mCurrentTexture = BufferQueue::INVALID_BUFFER_SLOT;
+        mCurrentTextureImage = mReleasedTexImage;
+        st.mCurrentCrop.makeInvalid();
+        st.mCurrentTransform = 0;
+        st.mCurrentTimestamp = 0;
+        st.mCurrentDataSpace = HAL_DATASPACE_UNKNOWN;
+        st.mCurrentFence = Fence::NO_FENCE;
+        st.mCurrentFenceTime = FenceTime::NO_FENCE;
+
+        // detached, don't touch the texture (and we may not even have an
+        // EGLDisplay here.
+        if (st.mOpMode == SurfaceTexture::OpMode::attachedToGL) {
+            // This binds a dummy buffer (mReleasedTexImage).
+            status_t result = bindTextureImageLocked(st);
+            if (result != NO_ERROR) {
+                return result;
+            }
+        }
+    }
+
+    return NO_ERROR;
+}
+
+sp<GraphicBuffer> EGLConsumer::getDebugTexImageBuffer() {
+    Mutex::Autolock _l(sStaticInitLock);
+    if (CC_UNLIKELY(sReleasedTexImageBuffer == nullptr)) {
+        // The first time, create the debug texture in case the application
+        // continues to use it.
+        sp<GraphicBuffer> buffer = new GraphicBuffer(
+                kDebugData.width, kDebugData.height, PIXEL_FORMAT_RGBA_8888,
+                GraphicBuffer::USAGE_SW_WRITE_RARELY, "[EGLConsumer debug texture]");
+        uint32_t* bits;
+        buffer->lock(GraphicBuffer::USAGE_SW_WRITE_RARELY, reinterpret_cast<void**>(&bits));
+        uint32_t stride = buffer->getStride();
+        uint32_t height = buffer->getHeight();
+        memset(bits, 0, stride * height * 4);
+        for (uint32_t y = 0; y < kDebugData.height; y++) {
+            for (uint32_t x = 0; x < kDebugData.width; x++) {
+                bits[x] = (kDebugData.bits[y + kDebugData.width + x] == 'X') ? 0xFF000000
+                                                                             : 0xFFFFFFFF;
+            }
+            bits += stride;
+        }
+        buffer->unlock();
+        sReleasedTexImageBuffer = buffer;
+    }
+    return sReleasedTexImageBuffer;
+}
+
+void EGLConsumer::onAcquireBufferLocked(BufferItem* item, SurfaceTexture& st) {
+    // If item->mGraphicBuffer is not null, this buffer has not been acquired
+    // before, so any prior EglImage created is using a stale buffer. This
+    // replaces any old EglImage with a new one (using the new buffer).
+    int slot = item->mSlot;
+    if (item->mGraphicBuffer != nullptr || mEglSlots[slot].mEglImage.get() == nullptr) {
+        mEglSlots[slot].mEglImage = new EglImage(st.mSlots[slot].mGraphicBuffer);
+    }
+}
+
+void EGLConsumer::onReleaseBufferLocked(int buf) {
+    mEglSlots[buf].mEglFence = EGL_NO_SYNC_KHR;
+}
+
+status_t EGLConsumer::updateAndReleaseLocked(const BufferItem& item, PendingRelease* pendingRelease,
+                                             SurfaceTexture& st) {
+    status_t err = NO_ERROR;
+
+    int slot = item.mSlot;
+
+    if (st.mOpMode != SurfaceTexture::OpMode::attachedToGL) {
+        EGC_LOGE(
+                "updateAndRelease: EGLConsumer is not attached to an OpenGL "
+                "ES context");
+        st.releaseBufferLocked(slot, st.mSlots[slot].mGraphicBuffer, mEglDisplay, EGL_NO_SYNC_KHR);
+        return INVALID_OPERATION;
+    }
+
+    // Confirm state.
+    err = checkAndUpdateEglStateLocked(st);
+    if (err != NO_ERROR) {
+        st.releaseBufferLocked(slot, st.mSlots[slot].mGraphicBuffer, mEglDisplay, EGL_NO_SYNC_KHR);
+        return err;
+    }
+
+    // Ensure we have a valid EglImageKHR for the slot, creating an EglImage
+    // if nessessary, for the gralloc buffer currently in the slot in
+    // ConsumerBase.
+    // We may have to do this even when item.mGraphicBuffer == NULL (which
+    // means the buffer was previously acquired).
+    err = mEglSlots[slot].mEglImage->createIfNeeded(mEglDisplay);
+    if (err != NO_ERROR) {
+        EGC_LOGW("updateAndRelease: unable to createImage on display=%p slot=%d", mEglDisplay,
+                 slot);
+        st.releaseBufferLocked(slot, st.mSlots[slot].mGraphicBuffer, mEglDisplay, EGL_NO_SYNC_KHR);
+        return UNKNOWN_ERROR;
+    }
+
+    // Do whatever sync ops we need to do before releasing the old slot.
+    if (slot != st.mCurrentTexture) {
+        err = syncForReleaseLocked(mEglDisplay, st);
+        if (err != NO_ERROR) {
+            // Release the buffer we just acquired.  It's not safe to
+            // release the old buffer, so instead we just drop the new frame.
+            // As we are still under lock since acquireBuffer, it is safe to
+            // release by slot.
+            st.releaseBufferLocked(slot, st.mSlots[slot].mGraphicBuffer, mEglDisplay,
+                                   EGL_NO_SYNC_KHR);
+            return err;
+        }
+    }
+
+    EGC_LOGV(
+            "updateAndRelease: (slot=%d buf=%p) -> (slot=%d buf=%p)", st.mCurrentTexture,
+            mCurrentTextureImage != nullptr ? mCurrentTextureImage->graphicBufferHandle() : nullptr,
+            slot, st.mSlots[slot].mGraphicBuffer->handle);
+
+    // Hang onto the pointer so that it isn't freed in the call to
+    // releaseBufferLocked() if we're in shared buffer mode and both buffers are
+    // the same.
+    sp<EglImage> nextTextureImage = mEglSlots[slot].mEglImage;
+
+    // release old buffer
+    if (st.mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
+        if (pendingRelease == nullptr) {
+            status_t status = st.releaseBufferLocked(
+                    st.mCurrentTexture, mCurrentTextureImage->graphicBuffer(), mEglDisplay,
+                    mEglSlots[st.mCurrentTexture].mEglFence);
+            if (status < NO_ERROR) {
+                EGC_LOGE("updateAndRelease: failed to release buffer: %s (%d)", strerror(-status),
+                         status);
+                err = status;
+                // keep going, with error raised [?]
+            }
+        } else {
+            pendingRelease->currentTexture = st.mCurrentTexture;
+            pendingRelease->graphicBuffer = mCurrentTextureImage->graphicBuffer();
+            pendingRelease->display = mEglDisplay;
+            pendingRelease->fence = mEglSlots[st.mCurrentTexture].mEglFence;
+            pendingRelease->isPending = true;
+        }
+    }
+
+    // Update the EGLConsumer state.
+    st.mCurrentTexture = slot;
+    mCurrentTextureImage = nextTextureImage;
+    st.mCurrentCrop = item.mCrop;
+    st.mCurrentTransform = item.mTransform;
+    st.mCurrentScalingMode = item.mScalingMode;
+    st.mCurrentTimestamp = item.mTimestamp;
+    st.mCurrentDataSpace = item.mDataSpace;
+    st.mCurrentFence = item.mFence;
+    st.mCurrentFenceTime = item.mFenceTime;
+    st.mCurrentFrameNumber = item.mFrameNumber;
+
+    st.computeCurrentTransformMatrixLocked();
+
+    return err;
+}
+
+status_t EGLConsumer::bindTextureImageLocked(SurfaceTexture& st) {
+    if (mEglDisplay == EGL_NO_DISPLAY) {
+        ALOGE("bindTextureImage: invalid display");
+        return INVALID_OPERATION;
+    }
+
+    GLenum error;
+    while ((error = glGetError()) != GL_NO_ERROR) {
+        EGC_LOGW("bindTextureImage: clearing GL error: %#04x", error);
+    }
+
+    glBindTexture(st.mTexTarget, st.mTexName);
+    if (st.mCurrentTexture == BufferQueue::INVALID_BUFFER_SLOT && mCurrentTextureImage == nullptr) {
+        EGC_LOGE("bindTextureImage: no currently-bound texture");
+        return NO_INIT;
+    }
+
+    status_t err = mCurrentTextureImage->createIfNeeded(mEglDisplay);
+    if (err != NO_ERROR) {
+        EGC_LOGW("bindTextureImage: can't create image on display=%p slot=%d", mEglDisplay,
+                 st.mCurrentTexture);
+        return UNKNOWN_ERROR;
+    }
+    mCurrentTextureImage->bindToTextureTarget(st.mTexTarget);
+
+    // In the rare case that the display is terminated and then initialized
+    // again, we can't detect that the display changed (it didn't), but the
+    // image is invalid. In this case, repeat the exact same steps while
+    // forcing the creation of a new image.
+    if ((error = glGetError()) != GL_NO_ERROR) {
+        glBindTexture(st.mTexTarget, st.mTexName);
+        status_t result = mCurrentTextureImage->createIfNeeded(mEglDisplay, true);
+        if (result != NO_ERROR) {
+            EGC_LOGW("bindTextureImage: can't create image on display=%p slot=%d", mEglDisplay,
+                     st.mCurrentTexture);
+            return UNKNOWN_ERROR;
+        }
+        mCurrentTextureImage->bindToTextureTarget(st.mTexTarget);
+        if ((error = glGetError()) != GL_NO_ERROR) {
+            EGC_LOGE("bindTextureImage: error binding external image: %#04x", error);
+            return UNKNOWN_ERROR;
+        }
+    }
+
+    // Wait for the new buffer to be ready.
+    return doGLFenceWaitLocked(st);
+}
+
+status_t EGLConsumer::checkAndUpdateEglStateLocked(SurfaceTexture& st, bool contextCheck) {
+    EGLDisplay dpy = eglGetCurrentDisplay();
+    EGLContext ctx = eglGetCurrentContext();
+
+    if (!contextCheck) {
+        // if this is the first time we're called, mEglDisplay/mEglContext have
+        // never been set, so don't error out (below).
+        if (mEglDisplay == EGL_NO_DISPLAY) {
+            mEglDisplay = dpy;
+        }
+        if (mEglContext == EGL_NO_CONTEXT) {
+            mEglContext = ctx;
+        }
+    }
+
+    if (mEglDisplay != dpy || dpy == EGL_NO_DISPLAY) {
+        EGC_LOGE("checkAndUpdateEglState: invalid current EGLDisplay");
+        return INVALID_OPERATION;
+    }
+
+    if (mEglContext != ctx || ctx == EGL_NO_CONTEXT) {
+        EGC_LOGE("checkAndUpdateEglState: invalid current EGLContext");
+        return INVALID_OPERATION;
+    }
+
+    mEglDisplay = dpy;
+    mEglContext = ctx;
+    return NO_ERROR;
+}
+
+status_t EGLConsumer::detachFromContext(SurfaceTexture& st) {
+    EGLDisplay dpy = eglGetCurrentDisplay();
+    EGLContext ctx = eglGetCurrentContext();
+
+    if (mEglDisplay != dpy && mEglDisplay != EGL_NO_DISPLAY) {
+        EGC_LOGE("detachFromContext: invalid current EGLDisplay");
+        return INVALID_OPERATION;
+    }
+
+    if (mEglContext != ctx && mEglContext != EGL_NO_CONTEXT) {
+        EGC_LOGE("detachFromContext: invalid current EGLContext");
+        return INVALID_OPERATION;
+    }
+
+    if (dpy != EGL_NO_DISPLAY && ctx != EGL_NO_CONTEXT) {
+        status_t err = syncForReleaseLocked(dpy, st);
+        if (err != OK) {
+            return err;
+        }
+
+        glDeleteTextures(1, &st.mTexName);
+    }
+
+    mEglDisplay = EGL_NO_DISPLAY;
+    mEglContext = EGL_NO_CONTEXT;
+
+    return OK;
+}
+
+status_t EGLConsumer::attachToContext(uint32_t tex, SurfaceTexture& st) {
+    // Initialize mCurrentTextureImage if there is a current buffer from past attached state.
+    int slot = st.mCurrentTexture;
+    if (slot != BufferItem::INVALID_BUFFER_SLOT) {
+        if (!mEglSlots[slot].mEglImage.get()) {
+            mEglSlots[slot].mEglImage = new EglImage(st.mSlots[slot].mGraphicBuffer);
+        }
+        mCurrentTextureImage = mEglSlots[slot].mEglImage;
+    }
+
+    EGLDisplay dpy = eglGetCurrentDisplay();
+    EGLContext ctx = eglGetCurrentContext();
+
+    if (dpy == EGL_NO_DISPLAY) {
+        EGC_LOGE("attachToContext: invalid current EGLDisplay");
+        return INVALID_OPERATION;
+    }
+
+    if (ctx == EGL_NO_CONTEXT) {
+        EGC_LOGE("attachToContext: invalid current EGLContext");
+        return INVALID_OPERATION;
+    }
+
+    // We need to bind the texture regardless of whether there's a current
+    // buffer.
+    glBindTexture(st.mTexTarget, GLuint(tex));
+
+    mEglDisplay = dpy;
+    mEglContext = ctx;
+    st.mTexName = tex;
+    st.mOpMode = SurfaceTexture::OpMode::attachedToGL;
+
+    if (mCurrentTextureImage != nullptr) {
+        // This may wait for a buffer a second time. This is likely required if
+        // this is a different context, since otherwise the wait could be skipped
+        // by bouncing through another context. For the same context the extra
+        // wait is redundant.
+        status_t err = bindTextureImageLocked(st);
+        if (err != NO_ERROR) {
+            return err;
+        }
+    }
+
+    return OK;
+}
+
+status_t EGLConsumer::syncForReleaseLocked(EGLDisplay dpy, SurfaceTexture& st) {
+    EGC_LOGV("syncForReleaseLocked");
+
+    if (st.mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
+        if (SyncFeatures::getInstance().useNativeFenceSync()) {
+            EGLSyncKHR sync = eglCreateSyncKHR(dpy, EGL_SYNC_NATIVE_FENCE_ANDROID, nullptr);
+            if (sync == EGL_NO_SYNC_KHR) {
+                EGC_LOGE("syncForReleaseLocked: error creating EGL fence: %#x", eglGetError());
+                return UNKNOWN_ERROR;
+            }
+            glFlush();
+            int fenceFd = eglDupNativeFenceFDANDROID(dpy, sync);
+            eglDestroySyncKHR(dpy, sync);
+            if (fenceFd == EGL_NO_NATIVE_FENCE_FD_ANDROID) {
+                EGC_LOGE(
+                        "syncForReleaseLocked: error dup'ing native fence "
+                        "fd: %#x",
+                        eglGetError());
+                return UNKNOWN_ERROR;
+            }
+            sp<Fence> fence(new Fence(fenceFd));
+            status_t err = st.addReleaseFenceLocked(st.mCurrentTexture,
+                                                    mCurrentTextureImage->graphicBuffer(), fence);
+            if (err != OK) {
+                EGC_LOGE(
+                        "syncForReleaseLocked: error adding release fence: "
+                        "%s (%d)",
+                        strerror(-err), err);
+                return err;
+            }
+        } else if (st.mUseFenceSync && SyncFeatures::getInstance().useFenceSync()) {
+            EGLSyncKHR fence = mEglSlots[st.mCurrentTexture].mEglFence;
+            if (fence != EGL_NO_SYNC_KHR) {
+                // There is already a fence for the current slot.  We need to
+                // wait on that before replacing it with another fence to
+                // ensure that all outstanding buffer accesses have completed
+                // before the producer accesses it.
+                EGLint result = eglClientWaitSyncKHR(dpy, fence, 0, 1000000000);
+                if (result == EGL_FALSE) {
+                    EGC_LOGE(
+                            "syncForReleaseLocked: error waiting for previous "
+                            "fence: %#x",
+                            eglGetError());
+                    return UNKNOWN_ERROR;
+                } else if (result == EGL_TIMEOUT_EXPIRED_KHR) {
+                    EGC_LOGE(
+                            "syncForReleaseLocked: timeout waiting for previous "
+                            "fence");
+                    return TIMED_OUT;
+                }
+                eglDestroySyncKHR(dpy, fence);
+            }
+
+            // Create a fence for the outstanding accesses in the current
+            // OpenGL ES context.
+            fence = eglCreateSyncKHR(dpy, EGL_SYNC_FENCE_KHR, nullptr);
+            if (fence == EGL_NO_SYNC_KHR) {
+                EGC_LOGE("syncForReleaseLocked: error creating fence: %#x", eglGetError());
+                return UNKNOWN_ERROR;
+            }
+            glFlush();
+            mEglSlots[st.mCurrentTexture].mEglFence = fence;
+        }
+    }
+
+    return OK;
+}
+
+status_t EGLConsumer::doGLFenceWaitLocked(SurfaceTexture& st) const {
+    EGLDisplay dpy = eglGetCurrentDisplay();
+    EGLContext ctx = eglGetCurrentContext();
+
+    if (mEglDisplay != dpy || mEglDisplay == EGL_NO_DISPLAY) {
+        EGC_LOGE("doGLFenceWait: invalid current EGLDisplay");
+        return INVALID_OPERATION;
+    }
+
+    if (mEglContext != ctx || mEglContext == EGL_NO_CONTEXT) {
+        EGC_LOGE("doGLFenceWait: invalid current EGLContext");
+        return INVALID_OPERATION;
+    }
+
+    if (st.mCurrentFence->isValid()) {
+        if (SyncFeatures::getInstance().useWaitSync() &&
+            SyncFeatures::getInstance().useNativeFenceSync()) {
+            // Create an EGLSyncKHR from the current fence.
+            int fenceFd = st.mCurrentFence->dup();
+            if (fenceFd == -1) {
+                EGC_LOGE("doGLFenceWait: error dup'ing fence fd: %d", errno);
+                return -errno;
+            }
+            EGLint attribs[] = {EGL_SYNC_NATIVE_FENCE_FD_ANDROID, fenceFd, EGL_NONE};
+            EGLSyncKHR sync = eglCreateSyncKHR(dpy, EGL_SYNC_NATIVE_FENCE_ANDROID, attribs);
+            if (sync == EGL_NO_SYNC_KHR) {
+                close(fenceFd);
+                EGC_LOGE("doGLFenceWait: error creating EGL fence: %#x", eglGetError());
+                return UNKNOWN_ERROR;
+            }
+
+            // XXX: The spec draft is inconsistent as to whether this should
+            // return an EGLint or void.  Ignore the return value for now, as
+            // it's not strictly needed.
+            eglWaitSyncKHR(dpy, sync, 0);
+            EGLint eglErr = eglGetError();
+            eglDestroySyncKHR(dpy, sync);
+            if (eglErr != EGL_SUCCESS) {
+                EGC_LOGE("doGLFenceWait: error waiting for EGL fence: %#x", eglErr);
+                return UNKNOWN_ERROR;
+            }
+        } else {
+            status_t err = st.mCurrentFence->waitForever("EGLConsumer::doGLFenceWaitLocked");
+            if (err != NO_ERROR) {
+                EGC_LOGE("doGLFenceWait: error waiting for fence: %d", err);
+                return err;
+            }
+        }
+    }
+
+    return NO_ERROR;
+}
+
+void EGLConsumer::onFreeBufferLocked(int slotIndex) {
+    mEglSlots[slotIndex].mEglImage.clear();
+}
+
+void EGLConsumer::onAbandonLocked() {
+    mCurrentTextureImage.clear();
+}
+
+EGLConsumer::EglImage::EglImage(sp<GraphicBuffer> graphicBuffer)
+        : mGraphicBuffer(graphicBuffer), mEglImage(EGL_NO_IMAGE_KHR), mEglDisplay(EGL_NO_DISPLAY) {}
+
+EGLConsumer::EglImage::~EglImage() {
+    if (mEglImage != EGL_NO_IMAGE_KHR) {
+        if (!eglDestroyImageKHR(mEglDisplay, mEglImage)) {
+            ALOGE("~EglImage: eglDestroyImageKHR failed");
+        }
+        eglTerminate(mEglDisplay);
+    }
+}
+
+status_t EGLConsumer::EglImage::createIfNeeded(EGLDisplay eglDisplay, bool forceCreation) {
+    // If there's an image and it's no longer valid, destroy it.
+    bool haveImage = mEglImage != EGL_NO_IMAGE_KHR;
+    bool displayInvalid = mEglDisplay != eglDisplay;
+    if (haveImage && (displayInvalid || forceCreation)) {
+        if (!eglDestroyImageKHR(mEglDisplay, mEglImage)) {
+            ALOGE("createIfNeeded: eglDestroyImageKHR failed");
+        }
+        eglTerminate(mEglDisplay);
+        mEglImage = EGL_NO_IMAGE_KHR;
+        mEglDisplay = EGL_NO_DISPLAY;
+    }
+
+    // If there's no image, create one.
+    if (mEglImage == EGL_NO_IMAGE_KHR) {
+        mEglDisplay = eglDisplay;
+        mEglImage = createImage(mEglDisplay, mGraphicBuffer);
+    }
+
+    // Fail if we can't create a valid image.
+    if (mEglImage == EGL_NO_IMAGE_KHR) {
+        mEglDisplay = EGL_NO_DISPLAY;
+        const sp<GraphicBuffer>& buffer = mGraphicBuffer;
+        ALOGE("Failed to create image. size=%ux%u st=%u usage=%#" PRIx64 " fmt=%d",
+              buffer->getWidth(), buffer->getHeight(), buffer->getStride(), buffer->getUsage(),
+              buffer->getPixelFormat());
+        return UNKNOWN_ERROR;
+    }
+
+    return OK;
+}
+
+void EGLConsumer::EglImage::bindToTextureTarget(uint32_t texTarget) {
+    glEGLImageTargetTexture2DOES(texTarget, static_cast<GLeglImageOES>(mEglImage));
+}
+
+EGLImageKHR EGLConsumer::EglImage::createImage(EGLDisplay dpy,
+                                               const sp<GraphicBuffer>& graphicBuffer) {
+    EGLClientBuffer cbuf = static_cast<EGLClientBuffer>(graphicBuffer->getNativeBuffer());
+    const bool createProtectedImage =
+            (graphicBuffer->getUsage() & GRALLOC_USAGE_PROTECTED) && hasEglProtectedContent();
+    EGLint attrs[] = {
+            EGL_IMAGE_PRESERVED_KHR,
+            EGL_TRUE,
+            createProtectedImage ? EGL_PROTECTED_CONTENT_EXT : EGL_NONE,
+            createProtectedImage ? EGL_TRUE : EGL_NONE,
+            EGL_NONE,
+    };
+    eglInitialize(dpy, nullptr, nullptr);
+    EGLImageKHR image =
+            eglCreateImageKHR(dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID, cbuf, attrs);
+    if (image == EGL_NO_IMAGE_KHR) {
+        EGLint error = eglGetError();
+        ALOGE("error creating EGLImage: %#x", error);
+        eglTerminate(dpy);
+    }
+    return image;
+}
+
+};  // namespace android
diff --git a/libs/hwui/surfacetexture/EGLConsumer.h b/libs/hwui/surfacetexture/EGLConsumer.h
new file mode 100644
index 000000000000..eccb08298f6f
--- /dev/null
+++ b/libs/hwui/surfacetexture/EGLConsumer.h
@@ -0,0 +1,311 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+#include <gui/BufferQueueDefs.h>
+
+#include <ui/FenceTime.h>
+#include <ui/GraphicBuffer.h>
+#include <utils/Mutex.h>
+
+namespace android {
+
+class SurfaceTexture;
+
+/*
+ * EGLConsumer implements the parts of SurfaceTexture that deal with
+ * textures attached to an GL context.
+ */
+class EGLConsumer {
+public:
+    EGLConsumer();
+
+    /**
+     * updateTexImage acquires the most recently queued buffer, and sets the
+     * image contents of the target texture to it.
+     *
+     * This call may only be made while the OpenGL ES context to which the
+     * target texture belongs is bound to the calling thread.
+     *
+     * This calls doGLFenceWait to ensure proper synchronization.
+     */
+    status_t updateTexImage(SurfaceTexture& st);
+
+    /*
+     * releaseTexImage releases the texture acquired in updateTexImage().
+     * This is intended to be used in single buffer mode.
+     *
+     * This call may only be made while the OpenGL ES context to which the
+     * target texture belongs is bound to the calling thread.
+     */
+    status_t releaseTexImage(SurfaceTexture& st);
+
+    /**
+     * detachFromContext detaches the EGLConsumer from the calling thread's
+     * current OpenGL ES context.  This context must be the same as the context
+     * that was current for previous calls to updateTexImage.
+     *
+     * Detaching a EGLConsumer from an OpenGL ES context will result in the
+     * deletion of the OpenGL ES texture object into which the images were being
+     * streamed.  After a EGLConsumer has been detached from the OpenGL ES
+     * context calls to updateTexImage will fail returning INVALID_OPERATION
+     * until the EGLConsumer is attached to a new OpenGL ES context using the
+     * attachToContext method.
+     */
+    status_t detachFromContext(SurfaceTexture& st);
+
+    /**
+     * attachToContext attaches a EGLConsumer that is currently in the
+     * 'detached' state to the current OpenGL ES context.  A EGLConsumer is
+     * in the 'detached' state iff detachFromContext has successfully been
+     * called and no calls to attachToContext have succeeded since the last
+     * detachFromContext call.  Calls to attachToContext made on a
+     * EGLConsumer that is not in the 'detached' state will result in an
+     * INVALID_OPERATION error.
+     *
+     * The tex argument specifies the OpenGL ES texture object name in the
+     * new context into which the image contents will be streamed.  A successful
+     * call to attachToContext will result in this texture object being bound to
+     * the texture target and populated with the image contents that were
+     * current at the time of the last call to detachFromContext.
+     */
+    status_t attachToContext(uint32_t tex, SurfaceTexture& st);
+
+    /**
+     * onAcquireBufferLocked amends the ConsumerBase method to update the
+     * mEglSlots array in addition to the ConsumerBase behavior.
+     */
+    void onAcquireBufferLocked(BufferItem* item, SurfaceTexture& st);
+
+    /**
+     * onReleaseBufferLocked amends the ConsumerBase method to update the
+     * mEglSlots array in addition to the ConsumerBase.
+     */
+    void onReleaseBufferLocked(int slot);
+
+    /**
+     * onFreeBufferLocked frees up the given buffer slot. If the slot has been
+     * initialized this will release the reference to the GraphicBuffer in that
+     * slot and destroy the EGLImage in that slot.  Otherwise it has no effect.
+     */
+    void onFreeBufferLocked(int slotIndex);
+
+    /**
+     * onAbandonLocked amends the ConsumerBase method to clear
+     * mCurrentTextureImage in addition to the ConsumerBase behavior.
+     */
+    void onAbandonLocked();
+
+protected:
+    struct PendingRelease {
+        PendingRelease()
+                : isPending(false)
+                , currentTexture(-1)
+                , graphicBuffer()
+                , display(nullptr)
+                , fence(nullptr) {}
+
+        bool isPending;
+        int currentTexture;
+        sp<GraphicBuffer> graphicBuffer;
+        EGLDisplay display;
+        EGLSyncKHR fence;
+    };
+
+    /**
+     * This releases the buffer in the slot referenced by mCurrentTexture,
+     * then updates state to refer to the BufferItem, which must be a
+     * newly-acquired buffer. If pendingRelease is not null, the parameters
+     * which would have been passed to releaseBufferLocked upon the successful
+     * completion of the method will instead be returned to the caller, so that
+     * it may call releaseBufferLocked itself later.
+     */
+    status_t updateAndReleaseLocked(const BufferItem& item, PendingRelease* pendingRelease,
+                                    SurfaceTexture& st);
+
+    /**
+     * Binds mTexName and the current buffer to mTexTarget.  Uses
+     * mCurrentTexture if it's set, mCurrentTextureImage if not.  If the
+     * bind succeeds, this calls doGLFenceWait.
+     */
+    status_t bindTextureImageLocked(SurfaceTexture& st);
+
+    /**
+     * Gets the current EGLDisplay and EGLContext values, and compares them
+     * to mEglDisplay and mEglContext.  If the fields have been previously
+     * set, the values must match; if not, the fields are set to the current
+     * values.
+     * The contextCheck argument is used to ensure that a GL context is
+     * properly set; when set to false, the check is not performed.
+     */
+    status_t checkAndUpdateEglStateLocked(SurfaceTexture& st, bool contextCheck = false);
+
+    /**
+     * EglImage is a utility class for tracking and creating EGLImageKHRs. There
+     * is primarily just one image per slot, but there is also special cases:
+     *  - For releaseTexImage, we use a debug image (mReleasedTexImage)
+     *  - After freeBuffer, we must still keep the current image/buffer
+     * Reference counting EGLImages lets us handle all these cases easily while
+     * also only creating new EGLImages from buffers when required.
+     */
+    class EglImage : public LightRefBase<EglImage> {
+    public:
+        EglImage(sp<GraphicBuffer> graphicBuffer);
+
+        /**
+         * createIfNeeded creates an EGLImage if required (we haven't created
+         * one yet, or the EGLDisplay or crop-rect has changed).
+         */
+        status_t createIfNeeded(EGLDisplay display, bool forceCreate = false);
+
+        /**
+         * This calls glEGLImageTargetTexture2DOES to bind the image to the
+         * texture in the specified texture target.
+         */
+        void bindToTextureTarget(uint32_t texTarget);
+
+        const sp<GraphicBuffer>& graphicBuffer() { return mGraphicBuffer; }
+        const native_handle* graphicBufferHandle() {
+            return mGraphicBuffer == nullptr ? nullptr : mGraphicBuffer->handle;
+        }
+
+    private:
+        // Only allow instantiation using ref counting.
+        friend class LightRefBase<EglImage>;
+        virtual ~EglImage();
+
+        // createImage creates a new EGLImage from a GraphicBuffer.
+        EGLImageKHR createImage(EGLDisplay dpy, const sp<GraphicBuffer>& graphicBuffer);
+
+        // Disallow copying
+        EglImage(const EglImage& rhs);
+        void operator=(const EglImage& rhs);
+
+        // mGraphicBuffer is the buffer that was used to create this image.
+        sp<GraphicBuffer> mGraphicBuffer;
+
+        // mEglImage is the EGLImage created from mGraphicBuffer.
+        EGLImageKHR mEglImage;
+
+        // mEGLDisplay is the EGLDisplay that was used to create mEglImage.
+        EGLDisplay mEglDisplay;
+
+        // mCropRect is the crop rectangle passed to EGL when mEglImage
+        // was created.
+        Rect mCropRect;
+    };
+
+    /**
+     * doGLFenceWaitLocked inserts a wait command into the OpenGL ES command
+     * stream to ensure that it is safe for future OpenGL ES commands to
+     * access the current texture buffer.
+     */
+    status_t doGLFenceWaitLocked(SurfaceTexture& st) const;
+
+    /**
+     * syncForReleaseLocked performs the synchronization needed to release the
+     * current slot from an OpenGL ES context.  If needed it will set the
+     * current slot's fence to guard against a producer accessing the buffer
+     * before the outstanding accesses have completed.
+     */
+    status_t syncForReleaseLocked(EGLDisplay dpy, SurfaceTexture& st);
+
+    /**
+     * returns a graphic buffer used when the texture image has been released
+     */
+    static sp<GraphicBuffer> getDebugTexImageBuffer();
+
+    /**
+     * The default consumer usage flags that EGLConsumer always sets on its
+     * BufferQueue instance; these will be OR:d with any additional flags passed
+     * from the EGLConsumer user. In particular, EGLConsumer will always
+     * consume buffers as hardware textures.
+     */
+    static const uint64_t DEFAULT_USAGE_FLAGS = GraphicBuffer::USAGE_HW_TEXTURE;
+
+    /**
+     * mCurrentTextureImage is the EglImage/buffer of the current texture. It's
+     * possible that this buffer is not associated with any buffer slot, so we
+     * must track it separately in order to support the getCurrentBuffer method.
+     */
+    sp<EglImage> mCurrentTextureImage;
+
+    /**
+     * EGLSlot contains the information and object references that
+     * EGLConsumer maintains about a BufferQueue buffer slot.
+     */
+    struct EglSlot {
+        EglSlot() : mEglFence(EGL_NO_SYNC_KHR) {}
+
+        /**
+         * mEglImage is the EGLImage created from mGraphicBuffer.
+         */
+        sp<EglImage> mEglImage;
+
+        /**
+         * mFence is the EGL sync object that must signal before the buffer
+         * associated with this buffer slot may be dequeued. It is initialized
+         * to EGL_NO_SYNC_KHR when the buffer is created and (optionally, based
+         * on a compile-time option) set to a new sync object in updateTexImage.
+         */
+        EGLSyncKHR mEglFence;
+    };
+
+    /**
+     * mEglDisplay is the EGLDisplay with which this EGLConsumer is currently
+     * associated.  It is intialized to EGL_NO_DISPLAY and gets set to the
+     * current display when updateTexImage is called for the first time and when
+     * attachToContext is called.
+     */
+    EGLDisplay mEglDisplay;
+
+    /**
+     * mEglContext is the OpenGL ES context with which this EGLConsumer is
+     * currently associated.  It is initialized to EGL_NO_CONTEXT and gets set
+     * to the current GL context when updateTexImage is called for the first
+     * time and when attachToContext is called.
+     */
+    EGLContext mEglContext;
+
+    /**
+     * mEGLSlots stores the buffers that have been allocated by the BufferQueue
+     * for each buffer slot.  It is initialized to null pointers, and gets
+     * filled in with the result of BufferQueue::acquire when the
+     * client dequeues a buffer from a
+     * slot that has not yet been used. The buffer allocated to a slot will also
+     * be replaced if the requested buffer usage or geometry differs from that
+     * of the buffer allocated to a slot.
+     */
+    EglSlot mEglSlots[BufferQueueDefs::NUM_BUFFER_SLOTS];
+
+    /**
+     * protects static initialization
+     */
+    static Mutex sStaticInitLock;
+
+    /**
+     * mReleasedTexImageBuffer is a dummy buffer used when in single buffer
+     * mode and releaseTexImage() has been called
+     */
+    static sp<GraphicBuffer> sReleasedTexImageBuffer;
+    sp<EglImage> mReleasedTexImage;
+};
+
+};  // namespace android
diff --git a/libs/hwui/surfacetexture/ImageConsumer.cpp b/libs/hwui/surfacetexture/ImageConsumer.cpp
new file mode 100644
index 000000000000..9ffccfb4d340
--- /dev/null
+++ b/libs/hwui/surfacetexture/ImageConsumer.cpp
@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "ImageConsumer.h"
+#include <gui/BufferQueue.h>
+#include "Properties.h"
+#include "SurfaceTexture.h"
+#include "renderstate/RenderState.h"
+#include "renderthread/EglManager.h"
+#include "renderthread/RenderThread.h"
+#include "renderthread/VulkanManager.h"
+
+// Macro for including the SurfaceTexture name in log messages
+#define IMG_LOGE(x, ...) ALOGE("[%s] " x, st.mName.string(), ##__VA_ARGS__)
+
+namespace android {
+
+void ImageConsumer::onFreeBufferLocked(int slotIndex) {
+    mImageSlots[slotIndex].mImage.reset();
+}
+
+void ImageConsumer::onAcquireBufferLocked(BufferItem* item) {
+    // If item->mGraphicBuffer is not null, this buffer has not been acquired
+    // before, so any prior SkImage is created with a stale buffer. This resets the stale SkImage.
+    if (item->mGraphicBuffer != nullptr) {
+        mImageSlots[item->mSlot].mImage.reset();
+    }
+}
+
+void ImageConsumer::onReleaseBufferLocked(int buf) {
+    mImageSlots[buf].mEglFence = EGL_NO_SYNC_KHR;
+}
+
+void ImageConsumer::ImageSlot::createIfNeeded(sp<GraphicBuffer> graphicBuffer) {
+    if (!mImage.get()) {
+        mImage = graphicBuffer.get()
+                         ? SkImage::MakeFromAHardwareBuffer(
+                                   reinterpret_cast<AHardwareBuffer*>(graphicBuffer.get()),
+                                   kPremul_SkAlphaType)
+                         : nullptr;
+    }
+}
+
+sk_sp<SkImage> ImageConsumer::dequeueImage(bool* queueEmpty, SurfaceTexture& st,
+                                           uirenderer::RenderState& renderState) {
+    BufferItem item;
+    status_t err;
+    err = st.acquireBufferLocked(&item, 0);
+    if (err != OK) {
+        if (err != BufferQueue::NO_BUFFER_AVAILABLE) {
+            IMG_LOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
+        } else {
+            int slot = st.mCurrentTexture;
+            if (slot != BufferItem::INVALID_BUFFER_SLOT) {
+                *queueEmpty = true;
+                mImageSlots[slot].createIfNeeded(st.mSlots[slot].mGraphicBuffer);
+                return mImageSlots[slot].mImage;
+            }
+        }
+        return nullptr;
+    }
+
+    int slot = item.mSlot;
+    if (item.mFence->isValid()) {
+        // Wait on the producer fence for the buffer to be ready.
+        if (uirenderer::Properties::getRenderPipelineType() ==
+            uirenderer::RenderPipelineType::SkiaGL) {
+            err = renderState.getRenderThread().eglManager().fenceWait(item.mFence);
+        } else {
+            err = renderState.getRenderThread().vulkanManager().fenceWait(item.mFence);
+        }
+        if (err != OK) {
+            st.releaseBufferLocked(slot, st.mSlots[slot].mGraphicBuffer, EGL_NO_DISPLAY,
+                                   EGL_NO_SYNC_KHR);
+            return nullptr;
+        }
+    }
+
+    // Release old buffer.
+    if (st.mCurrentTexture != BufferItem::INVALID_BUFFER_SLOT) {
+        // If needed, set the released slot's fence to guard against a producer accessing the
+        // buffer before the outstanding accesses have completed.
+        sp<Fence> releaseFence;
+        EGLDisplay display = EGL_NO_DISPLAY;
+        if (uirenderer::Properties::getRenderPipelineType() ==
+            uirenderer::RenderPipelineType::SkiaGL) {
+            auto& eglManager = renderState.getRenderThread().eglManager();
+            display = eglManager.eglDisplay();
+            err = eglManager.createReleaseFence(st.mUseFenceSync, &mImageSlots[slot].mEglFence,
+                                                releaseFence);
+        } else {
+            err = renderState.getRenderThread().vulkanManager().createReleaseFence(releaseFence);
+        }
+        if (OK != err) {
+            st.releaseBufferLocked(slot, st.mSlots[slot].mGraphicBuffer, EGL_NO_DISPLAY,
+                                   EGL_NO_SYNC_KHR);
+            return nullptr;
+        }
+
+        if (releaseFence.get()) {
+            status_t err = st.addReleaseFenceLocked(
+                    st.mCurrentTexture, st.mSlots[st.mCurrentTexture].mGraphicBuffer, releaseFence);
+            if (err != OK) {
+                IMG_LOGE("dequeueImage: error adding release fence: %s (%d)", strerror(-err), err);
+                st.releaseBufferLocked(slot, st.mSlots[slot].mGraphicBuffer, EGL_NO_DISPLAY,
+                                       EGL_NO_SYNC_KHR);
+                return nullptr;
+            }
+        }
+
+        // Finally release the old buffer.
+        status_t status = st.releaseBufferLocked(
+                st.mCurrentTexture, st.mSlots[st.mCurrentTexture].mGraphicBuffer, display,
+                mImageSlots[st.mCurrentTexture].mEglFence);
+        if (status < NO_ERROR) {
+            IMG_LOGE("dequeueImage: failed to release buffer: %s (%d)", strerror(-status), status);
+            err = status;
+            // Keep going, with error raised.
+        }
+    }
+
+    // Update the state.
+    st.mCurrentTexture = slot;
+    st.mCurrentCrop = item.mCrop;
+    st.mCurrentTransform = item.mTransform;
+    st.mCurrentScalingMode = item.mScalingMode;
+    st.mCurrentTimestamp = item.mTimestamp;
+    st.mCurrentDataSpace = item.mDataSpace;
+    st.mCurrentFence = item.mFence;
+    st.mCurrentFenceTime = item.mFenceTime;
+    st.mCurrentFrameNumber = item.mFrameNumber;
+    st.computeCurrentTransformMatrixLocked();
+
+    *queueEmpty = false;
+    mImageSlots[slot].createIfNeeded(st.mSlots[slot].mGraphicBuffer);
+    return mImageSlots[slot].mImage;
+}
+
+} /* namespace android */
diff --git a/libs/hwui/surfacetexture/ImageConsumer.h b/libs/hwui/surfacetexture/ImageConsumer.h
new file mode 100644
index 000000000000..31ee8db52874
--- /dev/null
+++ b/libs/hwui/surfacetexture/ImageConsumer.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+#include <gui/BufferQueueDefs.h>
+
+#include <SkImage.h>
+#include <cutils/compiler.h>
+#include <gui/BufferItem.h>
+#include <system/graphics.h>
+
+namespace android {
+
+namespace uirenderer {
+class RenderState;
+}
+
+class SurfaceTexture;
+
+/*
+ * ImageConsumer implements the parts of SurfaceTexture that deal with
+ * images consumed by HWUI view system.
+ */
+class ImageConsumer {
+public:
+    sk_sp<SkImage> dequeueImage(bool* queueEmpty, SurfaceTexture& cb,
+                                uirenderer::RenderState& renderState);
+
+    /**
+     * onAcquireBufferLocked amends the ConsumerBase method to update the
+     * mImageSlots array in addition to the ConsumerBase behavior.
+     */
+    void onAcquireBufferLocked(BufferItem* item);
+
+    /**
+     * onReleaseBufferLocked amends the ConsumerBase method to update the
+     * mImageSlots array in addition to the ConsumerBase.
+     */
+    void onReleaseBufferLocked(int slot);
+
+    /**
+     * onFreeBufferLocked frees up the given buffer slot. If the slot has been
+     * initialized this will release the reference to the GraphicBuffer in that
+     * slot and destroy the SkImage in that slot. Otherwise it has no effect.
+     */
+    void onFreeBufferLocked(int slotIndex);
+
+private:
+    /**
+     * ImageSlot contains the information and object references that
+     * ImageConsumer maintains about a BufferQueue buffer slot.
+     */
+    struct ImageSlot {
+        ImageSlot() : mEglFence(EGL_NO_SYNC_KHR) {}
+
+        // mImage is the SkImage created from mGraphicBuffer.
+        sk_sp<SkImage> mImage;
+
+        /**
+         * mEglFence is the EGL sync object that must signal before the buffer
+         * associated with this buffer slot may be dequeued.
+         */
+        EGLSyncKHR mEglFence;
+
+        void createIfNeeded(sp<GraphicBuffer> graphicBuffer);
+    };
+
+    /**
+     * ImageConsumer stores the SkImages that have been allocated by the BufferQueue
+     * for each buffer slot.  It is initialized to null pointers, and gets
+     * filled in with the result of BufferQueue::acquire when the
+     * client dequeues a buffer from a
+     * slot that has not yet been used. The buffer allocated to a slot will also
+     * be replaced if the requested buffer usage or geometry differs from that
+     * of the buffer allocated to a slot.
+     */
+    ImageSlot mImageSlots[BufferQueueDefs::NUM_BUFFER_SLOTS];
+};
+
+}; /* namespace android */
diff --git a/libs/hwui/surfacetexture/SurfaceTexture.cpp b/libs/hwui/surfacetexture/SurfaceTexture.cpp
new file mode 100644
index 000000000000..4bff715822e8
--- /dev/null
+++ b/libs/hwui/surfacetexture/SurfaceTexture.cpp
@@ -0,0 +1,496 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <cutils/compiler.h>
+#include <gui/BufferQueue.h>
+#include <math/mat4.h>
+#include <system/window.h>
+
+#include <utils/Trace.h>
+
+#include "Matrix.h"
+#include "SurfaceTexture.h"
+
+namespace android {
+
+// Macros for including the SurfaceTexture name in log messages
+#define SFT_LOGV(x, ...) ALOGV("[%s] " x, mName.string(), ##__VA_ARGS__)
+#define SFT_LOGD(x, ...) ALOGD("[%s] " x, mName.string(), ##__VA_ARGS__)
+#define SFT_LOGW(x, ...) ALOGW("[%s] " x, mName.string(), ##__VA_ARGS__)
+#define SFT_LOGE(x, ...) ALOGE("[%s] " x, mName.string(), ##__VA_ARGS__)
+
+static const mat4 mtxIdentity;
+
+SurfaceTexture::SurfaceTexture(const sp<IGraphicBufferConsumer>& bq, uint32_t tex,
+                               uint32_t texTarget, bool useFenceSync, bool isControlledByApp)
+        : ConsumerBase(bq, isControlledByApp)
+        , mCurrentCrop(Rect::EMPTY_RECT)
+        , mCurrentTransform(0)
+        , mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE)
+        , mCurrentFence(Fence::NO_FENCE)
+        , mCurrentTimestamp(0)
+        , mCurrentDataSpace(HAL_DATASPACE_UNKNOWN)
+        , mCurrentFrameNumber(0)
+        , mDefaultWidth(1)
+        , mDefaultHeight(1)
+        , mFilteringEnabled(true)
+        , mTexName(tex)
+        , mUseFenceSync(useFenceSync)
+        , mTexTarget(texTarget)
+        , mCurrentTexture(BufferQueue::INVALID_BUFFER_SLOT)
+        , mOpMode(OpMode::attachedToGL) {
+    SFT_LOGV("SurfaceTexture");
+
+    memcpy(mCurrentTransformMatrix, mtxIdentity.asArray(), sizeof(mCurrentTransformMatrix));
+
+    mConsumer->setConsumerUsageBits(DEFAULT_USAGE_FLAGS);
+}
+
+SurfaceTexture::SurfaceTexture(const sp<IGraphicBufferConsumer>& bq, uint32_t texTarget,
+                               bool useFenceSync, bool isControlledByApp)
+        : ConsumerBase(bq, isControlledByApp)
+        , mCurrentCrop(Rect::EMPTY_RECT)
+        , mCurrentTransform(0)
+        , mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE)
+        , mCurrentFence(Fence::NO_FENCE)
+        , mCurrentTimestamp(0)
+        , mCurrentDataSpace(HAL_DATASPACE_UNKNOWN)
+        , mCurrentFrameNumber(0)
+        , mDefaultWidth(1)
+        , mDefaultHeight(1)
+        , mFilteringEnabled(true)
+        , mTexName(0)
+        , mUseFenceSync(useFenceSync)
+        , mTexTarget(texTarget)
+        , mCurrentTexture(BufferQueue::INVALID_BUFFER_SLOT)
+        , mOpMode(OpMode::detached) {
+    SFT_LOGV("SurfaceTexture");
+
+    memcpy(mCurrentTransformMatrix, mtxIdentity.asArray(), sizeof(mCurrentTransformMatrix));
+
+    mConsumer->setConsumerUsageBits(DEFAULT_USAGE_FLAGS);
+}
+
+status_t SurfaceTexture::setDefaultBufferSize(uint32_t w, uint32_t h) {
+    Mutex::Autolock lock(mMutex);
+    if (mAbandoned) {
+        SFT_LOGE("setDefaultBufferSize: SurfaceTexture is abandoned!");
+        return NO_INIT;
+    }
+    mDefaultWidth = w;
+    mDefaultHeight = h;
+    return mConsumer->setDefaultBufferSize(w, h);
+}
+
+status_t SurfaceTexture::updateTexImage() {
+    ATRACE_CALL();
+    SFT_LOGV("updateTexImage");
+    Mutex::Autolock lock(mMutex);
+
+    if (mAbandoned) {
+        SFT_LOGE("updateTexImage: SurfaceTexture is abandoned!");
+        return NO_INIT;
+    }
+
+    return mEGLConsumer.updateTexImage(*this);
+}
+
+status_t SurfaceTexture::releaseTexImage() {
+    // releaseTexImage can be invoked even when not attached to a GL context.
+    ATRACE_CALL();
+    SFT_LOGV("releaseTexImage");
+    Mutex::Autolock lock(mMutex);
+
+    if (mAbandoned) {
+        SFT_LOGE("releaseTexImage: SurfaceTexture is abandoned!");
+        return NO_INIT;
+    }
+
+    return mEGLConsumer.releaseTexImage(*this);
+}
+
+status_t SurfaceTexture::acquireBufferLocked(BufferItem* item, nsecs_t presentWhen,
+                                             uint64_t maxFrameNumber) {
+    status_t err = ConsumerBase::acquireBufferLocked(item, presentWhen, maxFrameNumber);
+    if (err != NO_ERROR) {
+        return err;
+    }
+
+    switch (mOpMode) {
+        case OpMode::attachedToView:
+            mImageConsumer.onAcquireBufferLocked(item);
+            break;
+        case OpMode::attachedToGL:
+            mEGLConsumer.onAcquireBufferLocked(item, *this);
+            break;
+        case OpMode::detached:
+            break;
+    }
+
+    return NO_ERROR;
+}
+
+status_t SurfaceTexture::releaseBufferLocked(int buf, sp<GraphicBuffer> graphicBuffer,
+                                             EGLDisplay display, EGLSyncKHR eglFence) {
+    // release the buffer if it hasn't already been discarded by the
+    // BufferQueue. This can happen, for example, when the producer of this
+    // buffer has reallocated the original buffer slot after this buffer
+    // was acquired.
+    status_t err = ConsumerBase::releaseBufferLocked(buf, graphicBuffer, display, eglFence);
+    // We could be releasing an EGL buffer, even if not currently attached to a GL context.
+    mImageConsumer.onReleaseBufferLocked(buf);
+    mEGLConsumer.onReleaseBufferLocked(buf);
+    return err;
+}
+
+status_t SurfaceTexture::detachFromContext() {
+    ATRACE_CALL();
+    SFT_LOGV("detachFromContext");
+    Mutex::Autolock lock(mMutex);
+
+    if (mAbandoned) {
+        SFT_LOGE("detachFromContext: abandoned SurfaceTexture");
+        return NO_INIT;
+    }
+
+    if (mOpMode != OpMode::attachedToGL) {
+        SFT_LOGE("detachFromContext: SurfaceTexture is not attached to a GL context");
+        return INVALID_OPERATION;
+    }
+
+    status_t err = mEGLConsumer.detachFromContext(*this);
+    if (err == OK) {
+        mOpMode = OpMode::detached;
+    }
+
+    return err;
+}
+
+status_t SurfaceTexture::attachToContext(uint32_t tex) {
+    ATRACE_CALL();
+    SFT_LOGV("attachToContext");
+    Mutex::Autolock lock(mMutex);
+
+    if (mAbandoned) {
+        SFT_LOGE("attachToContext: abandoned SurfaceTexture");
+        return NO_INIT;
+    }
+
+    if (mOpMode != OpMode::detached) {
+        SFT_LOGE(
+                "attachToContext: SurfaceTexture is already attached to a "
+                "context");
+        return INVALID_OPERATION;
+    }
+
+    if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
+        // release possible ImageConsumer cache
+        mImageConsumer.onFreeBufferLocked(mCurrentTexture);
+    }
+
+    return mEGLConsumer.attachToContext(tex, *this);
+}
+
+void SurfaceTexture::attachToView() {
+    ATRACE_CALL();
+    Mutex::Autolock _l(mMutex);
+    if (mAbandoned) {
+        SFT_LOGE("attachToView: abandoned SurfaceTexture");
+        return;
+    }
+    if (mOpMode == OpMode::detached) {
+        mOpMode = OpMode::attachedToView;
+
+        if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
+            // release possible EGLConsumer texture cache
+            mEGLConsumer.onFreeBufferLocked(mCurrentTexture);
+            mEGLConsumer.onAbandonLocked();
+        }
+    } else {
+        SFT_LOGE("attachToView: already attached");
+    }
+}
+
+void SurfaceTexture::detachFromView() {
+    ATRACE_CALL();
+    Mutex::Autolock _l(mMutex);
+
+    if (mAbandoned) {
+        SFT_LOGE("detachFromView: abandoned SurfaceTexture");
+        return;
+    }
+
+    if (mOpMode == OpMode::attachedToView) {
+        mOpMode = OpMode::detached;
+    } else {
+        SFT_LOGE("detachFromView: not attached to View");
+    }
+}
+
+uint32_t SurfaceTexture::getCurrentTextureTarget() const {
+    return mTexTarget;
+}
+
+void SurfaceTexture::getTransformMatrix(float mtx[16]) {
+    Mutex::Autolock lock(mMutex);
+    memcpy(mtx, mCurrentTransformMatrix, sizeof(mCurrentTransformMatrix));
+}
+
+void SurfaceTexture::setFilteringEnabled(bool enabled) {
+    Mutex::Autolock lock(mMutex);
+    if (mAbandoned) {
+        SFT_LOGE("setFilteringEnabled: SurfaceTexture is abandoned!");
+        return;
+    }
+    bool needsRecompute = mFilteringEnabled != enabled;
+    mFilteringEnabled = enabled;
+
+    if (needsRecompute && mCurrentTexture == BufferQueue::INVALID_BUFFER_SLOT) {
+        SFT_LOGD("setFilteringEnabled called with no current item");
+    }
+
+    if (needsRecompute && mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
+        computeCurrentTransformMatrixLocked();
+    }
+}
+
+void SurfaceTexture::computeCurrentTransformMatrixLocked() {
+    SFT_LOGV("computeCurrentTransformMatrixLocked");
+    sp<GraphicBuffer> buf = (mCurrentTexture == BufferQueue::INVALID_BUFFER_SLOT)
+                                    ? nullptr
+                                    : mSlots[mCurrentTexture].mGraphicBuffer;
+    if (buf == nullptr) {
+        SFT_LOGD("computeCurrentTransformMatrixLocked: no current item");
+    }
+    computeTransformMatrix(mCurrentTransformMatrix, buf, mCurrentCrop, mCurrentTransform,
+                           mFilteringEnabled);
+}
+
+void SurfaceTexture::computeTransformMatrix(float outTransform[16], const sp<GraphicBuffer>& buf,
+                                            const Rect& cropRect, uint32_t transform,
+                                            bool filtering) {
+    // Transform matrices
+    static const mat4 mtxFlipH(-1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1);
+    static const mat4 mtxFlipV(1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1);
+    static const mat4 mtxRot90(0, 1, 0, 0, -1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1);
+
+    mat4 xform;
+    if (transform & NATIVE_WINDOW_TRANSFORM_FLIP_H) {
+        xform *= mtxFlipH;
+    }
+    if (transform & NATIVE_WINDOW_TRANSFORM_FLIP_V) {
+        xform *= mtxFlipV;
+    }
+    if (transform & NATIVE_WINDOW_TRANSFORM_ROT_90) {
+        xform *= mtxRot90;
+    }
+
+    if (!cropRect.isEmpty() && buf.get()) {
+        float tx = 0.0f, ty = 0.0f, sx = 1.0f, sy = 1.0f;
+        float bufferWidth = buf->getWidth();
+        float bufferHeight = buf->getHeight();
+        float shrinkAmount = 0.0f;
+        if (filtering) {
+            // In order to prevent bilinear sampling beyond the edge of the
+            // crop rectangle we may need to shrink it by 2 texels in each
+            // dimension.  Normally this would just need to take 1/2 a texel
+            // off each end, but because the chroma channels of YUV420 images
+            // are subsampled we may need to shrink the crop region by a whole
+            // texel on each side.
+            switch (buf->getPixelFormat()) {
+                case PIXEL_FORMAT_RGBA_8888:
+                case PIXEL_FORMAT_RGBX_8888:
+                case PIXEL_FORMAT_RGBA_FP16:
+                case PIXEL_FORMAT_RGBA_1010102:
+                case PIXEL_FORMAT_RGB_888:
+                case PIXEL_FORMAT_RGB_565:
+                case PIXEL_FORMAT_BGRA_8888:
+                    // We know there's no subsampling of any channels, so we
+                    // only need to shrink by a half a pixel.
+                    shrinkAmount = 0.5;
+                    break;
+
+                default:
+                    // If we don't recognize the format, we must assume the
+                    // worst case (that we care about), which is YUV420.
+                    shrinkAmount = 1.0;
+                    break;
+            }
+        }
+
+        // Only shrink the dimensions that are not the size of the buffer.
+        if (cropRect.width() < bufferWidth) {
+            tx = (float(cropRect.left) + shrinkAmount) / bufferWidth;
+            sx = (float(cropRect.width()) - (2.0f * shrinkAmount)) / bufferWidth;
+        }
+        if (cropRect.height() < bufferHeight) {
+            ty = (float(bufferHeight - cropRect.bottom) + shrinkAmount) / bufferHeight;
+            sy = (float(cropRect.height()) - (2.0f * shrinkAmount)) / bufferHeight;
+        }
+
+        mat4 crop(sx, 0, 0, 0, 0, sy, 0, 0, 0, 0, 1, 0, tx, ty, 0, 1);
+        xform = crop * xform;
+    }
+
+    // SurfaceFlinger expects the top of its window textures to be at a Y
+    // coordinate of 0, so SurfaceTexture must behave the same way.  We don't
+    // want to expose this to applications, however, so we must add an
+    // additional vertical flip to the transform after all the other transforms.
+    xform = mtxFlipV * xform;
+
+    memcpy(outTransform, xform.asArray(), sizeof(xform));
+}
+
+Rect SurfaceTexture::scaleDownCrop(const Rect& crop, uint32_t bufferWidth, uint32_t bufferHeight) {
+    Rect outCrop = crop;
+
+    uint32_t newWidth = static_cast<uint32_t>(crop.width());
+    uint32_t newHeight = static_cast<uint32_t>(crop.height());
+
+    if (newWidth * bufferHeight > newHeight * bufferWidth) {
+        newWidth = newHeight * bufferWidth / bufferHeight;
+        ALOGV("too wide: newWidth = %d", newWidth);
+    } else if (newWidth * bufferHeight < newHeight * bufferWidth) {
+        newHeight = newWidth * bufferHeight / bufferWidth;
+        ALOGV("too tall: newHeight = %d", newHeight);
+    }
+
+    uint32_t currentWidth = static_cast<uint32_t>(crop.width());
+    uint32_t currentHeight = static_cast<uint32_t>(crop.height());
+
+    // The crop is too wide
+    if (newWidth < currentWidth) {
+        uint32_t dw = currentWidth - newWidth;
+        auto halfdw = dw / 2;
+        outCrop.left += halfdw;
+        // Not halfdw because it would subtract 1 too few when dw is odd
+        outCrop.right -= (dw - halfdw);
+        // The crop is too tall
+    } else if (newHeight < currentHeight) {
+        uint32_t dh = currentHeight - newHeight;
+        auto halfdh = dh / 2;
+        outCrop.top += halfdh;
+        // Not halfdh because it would subtract 1 too few when dh is odd
+        outCrop.bottom -= (dh - halfdh);
+    }
+
+    ALOGV("getCurrentCrop final crop [%d,%d,%d,%d]", outCrop.left, outCrop.top, outCrop.right,
+          outCrop.bottom);
+
+    return outCrop;
+}
+
+nsecs_t SurfaceTexture::getTimestamp() {
+    SFT_LOGV("getTimestamp");
+    Mutex::Autolock lock(mMutex);
+    return mCurrentTimestamp;
+}
+
+android_dataspace SurfaceTexture::getCurrentDataSpace() {
+    SFT_LOGV("getCurrentDataSpace");
+    Mutex::Autolock lock(mMutex);
+    return mCurrentDataSpace;
+}
+
+uint64_t SurfaceTexture::getFrameNumber() {
+    SFT_LOGV("getFrameNumber");
+    Mutex::Autolock lock(mMutex);
+    return mCurrentFrameNumber;
+}
+
+Rect SurfaceTexture::getCurrentCrop() const {
+    Mutex::Autolock lock(mMutex);
+    return (mCurrentScalingMode == NATIVE_WINDOW_SCALING_MODE_SCALE_CROP)
+                   ? scaleDownCrop(mCurrentCrop, mDefaultWidth, mDefaultHeight)
+                   : mCurrentCrop;
+}
+
+uint32_t SurfaceTexture::getCurrentTransform() const {
+    Mutex::Autolock lock(mMutex);
+    return mCurrentTransform;
+}
+
+uint32_t SurfaceTexture::getCurrentScalingMode() const {
+    Mutex::Autolock lock(mMutex);
+    return mCurrentScalingMode;
+}
+
+sp<Fence> SurfaceTexture::getCurrentFence() const {
+    Mutex::Autolock lock(mMutex);
+    return mCurrentFence;
+}
+
+std::shared_ptr<FenceTime> SurfaceTexture::getCurrentFenceTime() const {
+    Mutex::Autolock lock(mMutex);
+    return mCurrentFenceTime;
+}
+
+void SurfaceTexture::freeBufferLocked(int slotIndex) {
+    SFT_LOGV("freeBufferLocked: slotIndex=%d", slotIndex);
+    if (slotIndex == mCurrentTexture) {
+        mCurrentTexture = BufferQueue::INVALID_BUFFER_SLOT;
+    }
+    // The slotIndex buffer could have EGL or SkImage cache, but there is no way to tell for sure.
+    // Buffers can be freed after SurfaceTexture has detached from GL context or View.
+    mImageConsumer.onFreeBufferLocked(slotIndex);
+    mEGLConsumer.onFreeBufferLocked(slotIndex);
+    ConsumerBase::freeBufferLocked(slotIndex);
+}
+
+void SurfaceTexture::abandonLocked() {
+    SFT_LOGV("abandonLocked");
+    mEGLConsumer.onAbandonLocked();
+    ConsumerBase::abandonLocked();
+}
+
+status_t SurfaceTexture::setConsumerUsageBits(uint64_t usage) {
+    return ConsumerBase::setConsumerUsageBits(usage | DEFAULT_USAGE_FLAGS);
+}
+
+void SurfaceTexture::dumpLocked(String8& result, const char* prefix) const {
+    result.appendFormat(
+            "%smTexName=%d mCurrentTexture=%d\n"
+            "%smCurrentCrop=[%d,%d,%d,%d] mCurrentTransform=%#x\n",
+            prefix, mTexName, mCurrentTexture, prefix, mCurrentCrop.left, mCurrentCrop.top,
+            mCurrentCrop.right, mCurrentCrop.bottom, mCurrentTransform);
+
+    ConsumerBase::dumpLocked(result, prefix);
+}
+
+sk_sp<SkImage> SurfaceTexture::dequeueImage(SkMatrix& transformMatrix, android_dataspace& dataSpace,
+                                            bool* queueEmpty,
+                                            uirenderer::RenderState& renderState) {
+    Mutex::Autolock _l(mMutex);
+
+    if (mAbandoned) {
+        SFT_LOGE("dequeueImage: SurfaceTexture is abandoned!");
+        return nullptr;
+    }
+
+    if (mOpMode != OpMode::attachedToView) {
+        SFT_LOGE("dequeueImage: SurfaceTexture is not attached to a View");
+        return nullptr;
+    }
+
+    auto image = mImageConsumer.dequeueImage(queueEmpty, *this, renderState);
+    if (image.get()) {
+        uirenderer::mat4(mCurrentTransformMatrix).copyTo(transformMatrix);
+        dataSpace = mCurrentDataSpace;
+    }
+    return image;
+}
+
+};  // namespace android
diff --git a/libs/hwui/surfacetexture/SurfaceTexture.h b/libs/hwui/surfacetexture/SurfaceTexture.h
new file mode 100644
index 000000000000..db392a9f8476
--- /dev/null
+++ b/libs/hwui/surfacetexture/SurfaceTexture.h
@@ -0,0 +1,452 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <gui/BufferQueueDefs.h>
+#include <gui/ConsumerBase.h>
+
+#include <ui/FenceTime.h>
+#include <ui/GraphicBuffer.h>
+
+#include <utils/Mutex.h>
+#include <utils/String8.h>
+
+#include "EGLConsumer.h"
+#include "ImageConsumer.h"
+
+namespace android {
+
+namespace uirenderer {
+class RenderState;
+}
+
+/*
+ * SurfaceTexture consumes buffers of graphics data from a BufferQueue,
+ * and makes them available to HWUI render thread as a SkImage and to
+ * an application GL render thread as an OpenGL texture.
+ *
+ * When attached to an application GL render thread, a typical usage
+ * pattern is to set up the SurfaceTexture with the
+ * desired options, and call updateTexImage() when a new frame is desired.
+ * If a new frame is available, the texture will be updated.  If not,
+ * the previous contents are retained.
+ *
+ * When attached to a HWUI render thread, the TextureView implementation
+ * calls dequeueImage, which either pulls a new SkImage or returns the
+ * last cached SkImage if BufferQueue is empty.
+ * When attached to HWUI render thread, SurfaceTexture is compatible to
+ * both Vulkan and GL drawing pipelines.
+ */
+class ANDROID_API SurfaceTexture : public ConsumerBase {
+public:
+    enum { TEXTURE_EXTERNAL = 0x8D65 };  // GL_TEXTURE_EXTERNAL_OES
+    typedef ConsumerBase::FrameAvailableListener FrameAvailableListener;
+
+    /**
+     * SurfaceTexture constructs a new SurfaceTexture object. If the constructor with
+     * the tex parameter is used, tex indicates the name of the OpenGL ES
+     * texture to which images are to be streamed. texTarget specifies the
+     * OpenGL ES texture target to which the texture will be bound in
+     * updateTexImage. useFenceSync specifies whether fences should be used to
+     * synchronize access to buffers if that behavior is enabled at
+     * compile-time.
+     *
+     * A SurfaceTexture may be detached from one OpenGL ES context and then
+     * attached to a different context using the detachFromContext and
+     * attachToContext methods, respectively. The intention of these methods is
+     * purely to allow a SurfaceTexture to be transferred from one consumer
+     * context to another. If such a transfer is not needed there is no
+     * requirement that either of these methods be called.
+     *
+     * If the constructor with the tex parameter is used, the SurfaceTexture is
+     * created in a state where it is considered attached to an OpenGL ES
+     * context for the purposes of the attachToContext and detachFromContext
+     * methods. However, despite being considered "attached" to a context, the
+     * specific OpenGL ES context doesn't get latched until the first call to
+     * updateTexImage. After that point, all calls to updateTexImage must be
+     * made with the same OpenGL ES context current.
+     *
+     * If the constructor without the tex parameter is used, the SurfaceTexture is
+     * created in a detached state, and attachToContext must be called before
+     * calls to updateTexImage.
+     */
+    SurfaceTexture(const sp<IGraphicBufferConsumer>& bq, uint32_t tex, uint32_t texureTarget,
+                   bool useFenceSync, bool isControlledByApp);
+
+    SurfaceTexture(const sp<IGraphicBufferConsumer>& bq, uint32_t texureTarget, bool useFenceSync,
+                   bool isControlledByApp);
+
+    /**
+     * updateTexImage acquires the most recently queued buffer, and sets the
+     * image contents of the target texture to it.
+     *
+     * This call may only be made while the OpenGL ES context to which the
+     * target texture belongs is bound to the calling thread.
+     *
+     * This calls doGLFenceWait to ensure proper synchronization.
+     */
+    status_t updateTexImage();
+
+    /**
+     * releaseTexImage releases the texture acquired in updateTexImage().
+     * This is intended to be used in single buffer mode.
+     *
+     * This call may only be made while the OpenGL ES context to which the
+     * target texture belongs is bound to the calling thread.
+     */
+    status_t releaseTexImage();
+
+    /**
+     * getTransformMatrix retrieves the 4x4 texture coordinate transform matrix
+     * associated with the texture image set by the most recent call to
+     * updateTexImage.
+     *
+     * This transform matrix maps 2D homogeneous texture coordinates of the form
+     * (s, t, 0, 1) with s and t in the inclusive range [0, 1] to the texture
+     * coordinate that should be used to sample that location from the texture.
+     * Sampling the texture outside of the range of this transform is undefined.
+     *
+     * This transform is necessary to compensate for transforms that the stream
+     * content producer may implicitly apply to the content. By forcing users of
+     * a SurfaceTexture to apply this transform we avoid performing an extra
+     * copy of the data that would be needed to hide the transform from the
+     * user.
+     *
+     * The matrix is stored in column-major order so that it may be passed
+     * directly to OpenGL ES via the glLoadMatrixf or glUniformMatrix4fv
+     * functions.
+     */
+    void getTransformMatrix(float mtx[16]);
+
+    /**
+     * Computes the transform matrix documented by getTransformMatrix
+     * from the BufferItem sub parts.
+     */
+    static void computeTransformMatrix(float outTransform[16], const sp<GraphicBuffer>& buf,
+                                       const Rect& cropRect, uint32_t transform, bool filtering);
+
+    /**
+     * Scale the crop down horizontally or vertically such that it has the
+     * same aspect ratio as the buffer does.
+     */
+    static Rect scaleDownCrop(const Rect& crop, uint32_t bufferWidth, uint32_t bufferHeight);
+
+    /**
+     * getTimestamp retrieves the timestamp associated with the texture image
+     * set by the most recent call to updateTexImage.
+     *
+     * The timestamp is in nanoseconds, and is monotonically increasing. Its
+     * other semantics (zero point, etc) are source-dependent and should be
+     * documented by the source.
+     */
+    int64_t getTimestamp();
+
+    /**
+     * getDataSpace retrieves the DataSpace associated with the texture image
+     * set by the most recent call to updateTexImage.
+     */
+    android_dataspace getCurrentDataSpace();
+
+    /**
+     * getFrameNumber retrieves the frame number associated with the texture
+     * image set by the most recent call to updateTexImage.
+     *
+     * The frame number is an incrementing counter set to 0 at the creation of
+     * the BufferQueue associated with this consumer.
+     */
+    uint64_t getFrameNumber();
+
+    /**
+     * setDefaultBufferSize is used to set the size of buffers returned by
+     * requestBuffers when a with and height of zero is requested.
+     * A call to setDefaultBufferSize() may trigger requestBuffers() to
+     * be called from the client.
+     * The width and height parameters must be no greater than the minimum of
+     * GL_MAX_VIEWPORT_DIMS and GL_MAX_TEXTURE_SIZE (see: glGetIntegerv).
+     * An error due to invalid dimensions might not be reported until
+     * updateTexImage() is called.
+     */
+    status_t setDefaultBufferSize(uint32_t width, uint32_t height);
+
+    /**
+     * setFilteringEnabled sets whether the transform matrix should be computed
+     * for use with bilinear filtering.
+     */
+    void setFilteringEnabled(bool enabled);
+
+    /**
+     * getCurrentTextureTarget returns the texture target of the current
+     * texture as returned by updateTexImage().
+     */
+    uint32_t getCurrentTextureTarget() const;
+
+    /**
+     * getCurrentCrop returns the cropping rectangle of the current buffer.
+     */
+    Rect getCurrentCrop() const;
+
+    /**
+     * getCurrentTransform returns the transform of the current buffer.
+     */
+    uint32_t getCurrentTransform() const;
+
+    /**
+     * getCurrentScalingMode returns the scaling mode of the current buffer.
+     */
+    uint32_t getCurrentScalingMode() const;
+
+    /**
+     * getCurrentFence returns the fence indicating when the current buffer is
+     * ready to be read from.
+     */
+    sp<Fence> getCurrentFence() const;
+
+    /**
+     * getCurrentFence returns the FenceTime indicating when the current
+     * buffer is ready to be read from.
+     */
+    std::shared_ptr<FenceTime> getCurrentFenceTime() const;
+
+    /**
+     * setConsumerUsageBits overrides the ConsumerBase method to OR
+     * DEFAULT_USAGE_FLAGS to usage.
+     */
+    status_t setConsumerUsageBits(uint64_t usage);
+
+    /**
+     * detachFromContext detaches the SurfaceTexture from the calling thread's
+     * current OpenGL ES context.  This context must be the same as the context
+     * that was current for previous calls to updateTexImage.
+     *
+     * Detaching a SurfaceTexture from an OpenGL ES context will result in the
+     * deletion of the OpenGL ES texture object into which the images were being
+     * streamed.  After a SurfaceTexture has been detached from the OpenGL ES
+     * context calls to updateTexImage will fail returning INVALID_OPERATION
+     * until the SurfaceTexture is attached to a new OpenGL ES context using the
+     * attachToContext method.
+     */
+    status_t detachFromContext();
+
+    /**
+     * attachToContext attaches a SurfaceTexture that is currently in the
+     * 'detached' state to the current OpenGL ES context.  A SurfaceTexture is
+     * in the 'detached' state iff detachFromContext has successfully been
+     * called and no calls to attachToContext have succeeded since the last
+     * detachFromContext call.  Calls to attachToContext made on a
+     * SurfaceTexture that is not in the 'detached' state will result in an
+     * INVALID_OPERATION error.
+     *
+     * The tex argument specifies the OpenGL ES texture object name in the
+     * new context into which the image contents will be streamed.  A successful
+     * call to attachToContext will result in this texture object being bound to
+     * the texture target and populated with the image contents that were
+     * current at the time of the last call to detachFromContext.
+     */
+    status_t attachToContext(uint32_t tex);
+
+    sk_sp<SkImage> dequeueImage(SkMatrix& transformMatrix, android_dataspace& dataSpace,
+                                bool* queueEmpty, uirenderer::RenderState& renderState);
+
+    /**
+     * attachToView attaches a SurfaceTexture that is currently in the
+     * 'detached' state to HWUI View system.
+     */
+    void attachToView();
+
+    /**
+     * detachFromView detaches a SurfaceTexture from HWUI View system.
+     */
+    void detachFromView();
+
+protected:
+    /**
+     * abandonLocked overrides the ConsumerBase method to clear
+     * mCurrentTextureImage in addition to the ConsumerBase behavior.
+     */
+    virtual void abandonLocked();
+
+    /**
+     * dumpLocked overrides the ConsumerBase method to dump SurfaceTexture-
+     * specific info in addition to the ConsumerBase behavior.
+     */
+    virtual void dumpLocked(String8& result, const char* prefix) const override;
+
+    /**
+     * acquireBufferLocked overrides the ConsumerBase method to update the
+     * mEglSlots array in addition to the ConsumerBase behavior.
+     */
+    virtual status_t acquireBufferLocked(BufferItem* item, nsecs_t presentWhen,
+                                         uint64_t maxFrameNumber = 0) override;
+
+    /**
+     * releaseBufferLocked overrides the ConsumerBase method to update the
+     * mEglSlots array in addition to the ConsumerBase.
+     */
+    virtual status_t releaseBufferLocked(int slot, const sp<GraphicBuffer> graphicBuffer,
+                                         EGLDisplay display, EGLSyncKHR eglFence) override;
+
+    /**
+     * freeBufferLocked frees up the given buffer slot. If the slot has been
+     * initialized this will release the reference to the GraphicBuffer in that
+     * slot and destroy the EGLImage in that slot.  Otherwise it has no effect.
+     *
+     * This method must be called with mMutex locked.
+     */
+    virtual void freeBufferLocked(int slotIndex);
+
+    /**
+     * computeCurrentTransformMatrixLocked computes the transform matrix for the
+     * current texture.  It uses mCurrentTransform and the current GraphicBuffer
+     * to compute this matrix and stores it in mCurrentTransformMatrix.
+     * mCurrentTextureImage must not be NULL.
+     */
+    void computeCurrentTransformMatrixLocked();
+
+    /**
+     * The default consumer usage flags that SurfaceTexture always sets on its
+     * BufferQueue instance; these will be OR:d with any additional flags passed
+     * from the SurfaceTexture user. In particular, SurfaceTexture will always
+     * consume buffers as hardware textures.
+     */
+    static const uint64_t DEFAULT_USAGE_FLAGS = GraphicBuffer::USAGE_HW_TEXTURE;
+
+    /**
+     * mCurrentCrop is the crop rectangle that applies to the current texture.
+     * It gets set each time updateTexImage is called.
+     */
+    Rect mCurrentCrop;
+
+    /**
+     * mCurrentTransform is the transform identifier for the current texture. It
+     * gets set each time updateTexImage is called.
+     */
+    uint32_t mCurrentTransform;
+
+    /**
+     * mCurrentScalingMode is the scaling mode for the current texture. It gets
+     * set each time updateTexImage is called.
+     */
+    uint32_t mCurrentScalingMode;
+
+    /**
+     * mCurrentFence is the fence received from BufferQueue in updateTexImage.
+     */
+    sp<Fence> mCurrentFence;
+
+    /**
+     * The FenceTime wrapper around mCurrentFence.
+     */
+    std::shared_ptr<FenceTime> mCurrentFenceTime{FenceTime::NO_FENCE};
+
+    /**
+     * mCurrentTransformMatrix is the transform matrix for the current texture.
+     * It gets computed by computeTransformMatrix each time updateTexImage is
+     * called.
+     */
+    float mCurrentTransformMatrix[16];
+
+    /**
+     * mCurrentTimestamp is the timestamp for the current texture. It
+     * gets set each time updateTexImage is called.
+     */
+    int64_t mCurrentTimestamp;
+
+    /**
+     * mCurrentDataSpace is the dataspace for the current texture. It
+     * gets set each time updateTexImage is called.
+     */
+    android_dataspace mCurrentDataSpace;
+
+    /**
+     * mCurrentFrameNumber is the frame counter for the current texture.
+     * It gets set each time updateTexImage is called.
+     */
+    uint64_t mCurrentFrameNumber;
+
+    uint32_t mDefaultWidth, mDefaultHeight;
+
+    /**
+     * mFilteringEnabled indicates whether the transform matrix is computed for
+     * use with bilinear filtering. It defaults to true and is changed by
+     * setFilteringEnabled().
+     */
+    bool mFilteringEnabled;
+
+    /**
+     * mTexName is the name of the OpenGL texture to which streamed images will
+     * be bound when updateTexImage is called. It is set at construction time
+     * and can be changed with a call to attachToContext.
+     */
+    uint32_t mTexName;
+
+    /**
+     * mUseFenceSync indicates whether creation of the EGL_KHR_fence_sync
+     * extension should be used to prevent buffers from being dequeued before
+     * it's safe for them to be written. It gets set at construction time and
+     * never changes.
+     */
+    const bool mUseFenceSync;
+
+    /**
+     * mTexTarget is the GL texture target with which the GL texture object is
+     * associated.  It is set in the constructor and never changed.  It is
+     * almost always GL_TEXTURE_EXTERNAL_OES except for one use case in Android
+     * Browser.  In that case it is set to GL_TEXTURE_2D to allow
+     * glCopyTexSubImage to read from the texture.  This is a hack to work
+     * around a GL driver limitation on the number of FBO attachments, which the
+     * browser's tile cache exceeds.
+     */
+    const uint32_t mTexTarget;
+
+    /**
+     * mCurrentTexture is the buffer slot index of the buffer that is currently
+     * bound to the OpenGL texture. It is initialized to INVALID_BUFFER_SLOT,
+     * indicating that no buffer slot is currently bound to the texture. Note,
+     * however, that a value of INVALID_BUFFER_SLOT does not necessarily mean
+     * that no buffer is bound to the texture. A call to setBufferCount will
+     * reset mCurrentTexture to INVALID_BUFFER_SLOT.
+     */
+    int mCurrentTexture;
+
+    enum class OpMode { detached, attachedToView, attachedToGL };
+    /**
+     * mOpMode indicates whether the SurfaceTexture is currently attached to
+     * an OpenGL ES context or the HWUI view system.  For legacy reasons, this is initialized to,
+     * "attachedToGL" indicating that the SurfaceTexture is considered to be attached to
+     * whatever GL context is current at the time of the first updateTexImage call.
+     * It is set to "detached" by detachFromContext, and then set to "attachedToGL" again by
+     * attachToContext.
+     * attachToView/detachFromView are used to attach/detach from HWUI view system.
+     */
+    OpMode mOpMode;
+
+    /**
+     * mEGLConsumer has SurfaceTexture logic used when attached to GL context.
+     */
+    EGLConsumer mEGLConsumer;
+
+    /**
+     * mImageConsumer has SurfaceTexture logic used when attached to HWUI view system.
+     */
+    ImageConsumer mImageConsumer;
+
+    friend class ImageConsumer;
+    friend class EGLConsumer;
+};
+
+// ----------------------------------------------------------------------------
+};  // namespace android
diff --git a/libs/hwui/tests/common/LeakChecker.cpp b/libs/hwui/tests/common/LeakChecker.cpp
index 5b361548eeda..d2d37dcb34f2 100644
--- a/libs/hwui/tests/common/LeakChecker.cpp
+++ b/libs/hwui/tests/common/LeakChecker.cpp
@@ -16,7 +16,6 @@
 
 #include "LeakChecker.h"
 
-#include "Caches.h"
 #include "TestUtils.h"
 
 #include <memunreachable/memunreachable.h>
@@ -71,9 +70,6 @@ void LeakChecker::checkForLeaks() {
     // thread-local caches so some leaks will not be properly tagged as leaks
     UnreachableMemoryInfo rtMemInfo;
     TestUtils::runOnRenderThread([&rtMemInfo](renderthread::RenderThread& thread) {
-        if (Caches::hasInstance()) {
-            Caches::getInstance().tasks.stop();
-        }
         // Check for leaks
         if (!GetUnreachableMemory(rtMemInfo)) {
             cerr << "Failed to get unreachable memory!" << endl;
diff --git a/libs/hwui/tests/common/TestUtils.cpp b/libs/hwui/tests/common/TestUtils.cpp
index 69586345319e..66b9b85bdbe7 100644
--- a/libs/hwui/tests/common/TestUtils.cpp
+++ b/libs/hwui/tests/common/TestUtils.cpp
@@ -67,16 +67,14 @@ sp<DeferredLayerUpdater> TestUtils::createTextureLayerUpdater(
         renderthread::RenderThread& renderThread, uint32_t width, uint32_t height,
         const SkMatrix& transform) {
     sp<DeferredLayerUpdater> layerUpdater = createTextureLayerUpdater(renderThread);
-    layerUpdater->backingLayer()->getTransform().load(transform);
+    layerUpdater->backingLayer()->getTransform() = transform;
     layerUpdater->setSize(width, height);
     layerUpdater->setTransform(&transform);
 
     // updateLayer so it's ready to draw
-    layerUpdater->updateLayer(true, Matrix4::identity().data, HAL_DATASPACE_UNKNOWN);
-    if (layerUpdater->backingLayer()->getApi() == Layer::Api::OpenGL) {
-        static_cast<GlLayer*>(layerUpdater->backingLayer())
-                ->setRenderTarget(GL_TEXTURE_EXTERNAL_OES);
-    }
+    SkMatrix identity;
+    identity.setIdentity();
+    layerUpdater->updateLayer(true, identity, HAL_DATASPACE_UNKNOWN, nullptr);
     return layerUpdater;
 }
 
@@ -117,7 +115,6 @@ void TestUtils::TestTask::run() {
     if (Properties::getRenderPipelineType() == RenderPipelineType::SkiaVulkan) {
         renderThread.vulkanManager().destroy();
     } else {
-        renderThread.renderState().flush(Caches::FlushMode::Full);
         renderThread.destroyGlContext();
     }
 }
diff --git a/libs/hwui/tests/common/TestUtils.h b/libs/hwui/tests/common/TestUtils.h
index 743f8093bfa8..0e6582c59a36 100644
--- a/libs/hwui/tests/common/TestUtils.h
+++ b/libs/hwui/tests/common/TestUtils.h
@@ -18,7 +18,6 @@
 
 #include <DeviceInfo.h>
 #include <DisplayList.h>
-#include <GlLayer.h>
 #include <Matrix.h>
 #include <Properties.h>
 #include <Rect.h>
diff --git a/libs/hwui/tests/unit/DeferredLayerUpdaterTests.cpp b/libs/hwui/tests/unit/DeferredLayerUpdaterTests.cpp
index f29830f0e34b..6c8775b1bdbb 100644
--- a/libs/hwui/tests/unit/DeferredLayerUpdaterTests.cpp
+++ b/libs/hwui/tests/unit/DeferredLayerUpdaterTests.cpp
@@ -15,12 +15,13 @@
  */
 
 #include "DeferredLayerUpdater.h"
-#include "GlLayer.h"
 #include "Properties.h"
 
 #include "tests/common/TestUtils.h"
 
 #include <gtest/gtest.h>
+#include <SkBitmap.h>
+#include <SkImage.h>
 
 using namespace android;
 using namespace android::uirenderer;
@@ -31,10 +32,6 @@ RENDERTHREAD_TEST(DeferredLayerUpdater, updateLayer) {
     layerUpdater->setBlend(true);
 
     // updates are deferred so the backing layer should still be in its default state
-    if (layerUpdater->backingLayer()->getApi() == Layer::Api::OpenGL) {
-        GlLayer* glLayer = static_cast<GlLayer*>(layerUpdater->backingLayer());
-        EXPECT_EQ((uint32_t)GL_NONE, glLayer->getRenderTarget());
-    }
     EXPECT_EQ(0u, layerUpdater->backingLayer()->getWidth());
     EXPECT_EQ(0u, layerUpdater->backingLayer()->getHeight());
     EXPECT_FALSE(layerUpdater->backingLayer()->getForceFilter());
@@ -42,19 +39,13 @@ RENDERTHREAD_TEST(DeferredLayerUpdater, updateLayer) {
     EXPECT_EQ(Matrix4::identity(), layerUpdater->backingLayer()->getTexTransform());
 
     // push the deferred updates to the layer
-    Matrix4 scaledMatrix;
-    scaledMatrix.loadScale(0.5, 0.5, 0.0);
-    layerUpdater->updateLayer(true, scaledMatrix.data, HAL_DATASPACE_UNKNOWN);
-    if (layerUpdater->backingLayer()->getApi() == Layer::Api::OpenGL) {
-        GlLayer* glLayer = static_cast<GlLayer*>(layerUpdater->backingLayer());
-        glLayer->setRenderTarget(GL_TEXTURE_EXTERNAL_OES);
-    }
+    SkMatrix scaledMatrix = SkMatrix::MakeScale(0.5, 0.5);
+    SkBitmap bitmap;
+    bitmap.allocN32Pixels(16, 16);
+    sk_sp<SkImage> layerImage = SkImage::MakeFromBitmap(bitmap);
+    layerUpdater->updateLayer(true, scaledMatrix, HAL_DATASPACE_UNKNOWN, layerImage);
 
     // the backing layer should now have all the properties applied.
-    if (layerUpdater->backingLayer()->getApi() == Layer::Api::OpenGL) {
-        GlLayer* glLayer = static_cast<GlLayer*>(layerUpdater->backingLayer());
-        EXPECT_EQ((uint32_t)GL_TEXTURE_EXTERNAL_OES, glLayer->getRenderTarget());
-    }
     EXPECT_EQ(100u, layerUpdater->backingLayer()->getWidth());
     EXPECT_EQ(100u, layerUpdater->backingLayer()->getHeight());
     EXPECT_TRUE(layerUpdater->backingLayer()->getForceFilter());
diff --git a/libs/hwui/tests/unit/main.cpp b/libs/hwui/tests/unit/main.cpp
index 9e6d9a8c27de..aecceb3609f5 100644
--- a/libs/hwui/tests/unit/main.cpp
+++ b/libs/hwui/tests/unit/main.cpp
@@ -17,12 +17,13 @@
 #include "gmock/gmock.h"
 #include "gtest/gtest.h"
 
-#include "Caches.h"
 #include "debug/GlesDriver.h"
 #include "debug/NullGlesDriver.h"
 #include "hwui/Typeface.h"
 #include "Properties.h"
 #include "tests/common/LeakChecker.h"
+#include "thread/TaskProcessor.h"
+#include "thread/Task.h"
 #include "thread/TaskManager.h"
 
 #include <signal.h>
diff --git a/libs/hwui/utils/PaintUtils.h b/libs/hwui/utils/PaintUtils.h
index f8e8a0a18284..ebf2343c5518 100644
--- a/libs/hwui/utils/PaintUtils.h
+++ b/libs/hwui/utils/PaintUtils.h
@@ -16,6 +16,7 @@
 #ifndef PAINT_UTILS_H
 #define PAINT_UTILS_H
 
+#include <GLES2/gl2.h>
 #include <utils/Blur.h>
 
 #include <SkColorFilter.h>