Revert "Simplify TextureView draw path"

This reverts commit 20a248934c67b19c8734362dba76a5cc94254686.

Change-Id: Iaa3ebb1d868acbe184080087aec312b43e87e3c7

12 files changed, 65 insertions, 37 deletions

diff --git a/core/java/android/view/DisplayListCanvas.java b/core/java/android/view/DisplayListCanvas.java
index 080ed9ae1841..948cec71d819 100644
--- a/core/java/android/view/DisplayListCanvas.java
+++ b/core/java/android/view/DisplayListCanvas.java
@@ -20,7 +20,12 @@ import android.annotation.NonNull;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.CanvasProperty;
+import android.graphics.NinePatch;
 import android.graphics.Paint;
+import android.graphics.Path;
+import android.graphics.Picture;
+import android.graphics.Rect;
+import android.graphics.RectF;
 import android.util.Pools.SynchronizedPool;
 
 /**
@@ -201,12 +206,16 @@ public class DisplayListCanvas extends Canvas {
      * Draws the specified layer onto this canvas.
      *
      * @param layer The layer to composite on this canvas
+     * @param x The left coordinate of the layer
+     * @param y The top coordinate of the layer
+     * @param paint The paint used to draw the layer
      */
-    void drawHardwareLayer(HardwareLayer layer) {
-        nDrawLayer(mNativeCanvasWrapper, layer.getLayerHandle());
+    void drawHardwareLayer(HardwareLayer layer, float x, float y, Paint paint) {
+        layer.setLayerPaint(paint);
+        nDrawLayer(mNativeCanvasWrapper, layer.getLayerHandle(), x, y);
     }
 
-    private static native void nDrawLayer(long renderer, long layer);
+    private static native void nDrawLayer(long renderer, long layer, float x, float y);
 
     ///////////////////////////////////////////////////////////////////////////
     // Drawing
diff --git a/core/java/android/view/HardwareLayer.java b/core/java/android/view/HardwareLayer.java
index 692ca7ba99cf..65ae8a649241 100644
--- a/core/java/android/view/HardwareLayer.java
+++ b/core/java/android/view/HardwareLayer.java
@@ -150,4 +150,8 @@ final class HardwareLayer {
     private static native void nSetSurfaceTexture(long layerUpdater,
             SurfaceTexture surface, boolean isAlreadyAttached);
     private static native void nUpdateSurfaceTexture(long layerUpdater);
+    private static native void nUpdateRenderLayer(long layerUpdater, long displayList,
+            int left, int top, int right, int bottom);
+
+    private static native int nGetTexName(long layerUpdater);
 }
diff --git a/core/java/android/view/TextureView.java b/core/java/android/view/TextureView.java
index 23bd3ac17954..cdc196e1c371 100644
--- a/core/java/android/view/TextureView.java
+++ b/core/java/android/view/TextureView.java
@@ -302,25 +302,11 @@ public class TextureView extends View {
      */
     @Override
     public final void draw(Canvas canvas) {
-        // NOTE: Maintain this carefully (see View#draw)
+        // NOTE: Maintain this carefully (see View.java)
         mPrivateFlags = (mPrivateFlags & ~PFLAG_DIRTY_MASK) | PFLAG_DRAWN;
 
-        /* Simplify drawing to guarantee the layer is the only thing drawn - so e.g. no background,
-        scrolling, or fading edges. This guarantees all drawing is in the layer, so drawing
-        properties (alpha, layer paint) affect all of the content of a TextureView. */
-
-        if (canvas.isHardwareAccelerated()) {
-            DisplayListCanvas displayListCanvas = (DisplayListCanvas) canvas;
-
-            HardwareLayer layer = getHardwareLayer();
-            if (layer != null) {
-                applyUpdate();
-                applyTransformMatrix();
-
-                mLayer.setLayerPaint(mLayerPaint); // ensure layer paint is up to date
-                displayListCanvas.drawHardwareLayer(layer);
-            }
-        }
+        applyUpdate();
+        applyTransformMatrix();
     }
 
     /**
@@ -356,7 +342,12 @@ public class TextureView extends View {
         invalidate(true);
     }
 
+    @Override
     HardwareLayer getHardwareLayer() {
+        // NOTE: Maintain these two lines very carefully (see View.java)
+        mPrivateFlags |= PFLAG_DRAWN | PFLAG_DRAWING_CACHE_VALID;
+        mPrivateFlags &= ~PFLAG_DIRTY_MASK;
+
         if (mLayer == null) {
             if (mAttachInfo == null || mAttachInfo.mHardwareRenderer == null) {
                 return null;
@@ -394,6 +385,9 @@ public class TextureView extends View {
             mSurface.setDefaultBufferSize(getWidth(), getHeight());
         }
 
+        applyUpdate();
+        applyTransformMatrix();
+
         return mLayer;
     }
 
diff --git a/core/java/android/view/View.java b/core/java/android/view/View.java
index b17f88fc7497..a4925184f181 100644
--- a/core/java/android/view/View.java
+++ b/core/java/android/view/View.java
@@ -15002,6 +15002,16 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
     }
 
     /**
+     * If this View draws with a HardwareLayer, returns it.
+     * Otherwise returns null
+     *
+     * TODO: Only TextureView uses this, can we eliminate it?
+     */
+    HardwareLayer getHardwareLayer() {
+        return null;
+    }
+
+    /**
      * Destroys all hardware rendering resources. This method is invoked
      * when the system needs to reclaim resources. Upon execution of this
      * method, you should free any OpenGL resources created by the view.
@@ -15151,7 +15161,10 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
             canvas.setHighContrastText(mAttachInfo.mHighContrastText);
 
             try {
-                if (layerType == LAYER_TYPE_SOFTWARE) {
+                final HardwareLayer layer = getHardwareLayer();
+                if (layer != null && layer.isValid()) {
+                    canvas.drawHardwareLayer(layer, 0, 0, mLayerPaint);
+                } else if (layerType == LAYER_TYPE_SOFTWARE) {
                     buildDrawingCache(true);
                     Bitmap cache = getDrawingCache(true);
                     if (cache != null) {
diff --git a/core/jni/android_view_DisplayListCanvas.cpp b/core/jni/android_view_DisplayListCanvas.cpp
index 9c1d6b17608b..3833325631c7 100644
--- a/core/jni/android_view_DisplayListCanvas.cpp
+++ b/core/jni/android_view_DisplayListCanvas.cpp
@@ -139,10 +139,10 @@ static void android_view_DisplayListCanvas_drawRenderNode(JNIEnv* env,
 // ----------------------------------------------------------------------------
 
 static void android_view_DisplayListCanvas_drawLayer(JNIEnv* env, jobject clazz,
-        jlong rendererPtr, jlong layerPtr) {
+        jlong rendererPtr, jlong layerPtr, jfloat x, jfloat y) {
     DisplayListCanvas* renderer = reinterpret_cast<DisplayListCanvas*>(rendererPtr);
     DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(layerPtr);
-    renderer->drawLayer(layer);
+    renderer->drawLayer(layer, x, y);
 }
 
 // ----------------------------------------------------------------------------
@@ -192,7 +192,7 @@ static JNINativeMethod gMethods[] = {
     { "nCreateDisplayListCanvas", "(II)J",     (void*) android_view_DisplayListCanvas_createDisplayListCanvas },
     { "nResetDisplayListCanvas", "(JII)V",     (void*) android_view_DisplayListCanvas_resetDisplayListCanvas },
 
-    { "nDrawLayer",               "(JJ)V",     (void*) android_view_DisplayListCanvas_drawLayer },
+    { "nDrawLayer",               "(JJFF)V",   (void*) android_view_DisplayListCanvas_drawLayer },
 
     { "nGetMaximumTextureWidth",  "()I",       (void*) android_view_DisplayListCanvas_getMaxTextureWidth },
     { "nGetMaximumTextureHeight", "()I",       (void*) android_view_DisplayListCanvas_getMaxTextureHeight },
diff --git a/core/jni/android_view_HardwareLayer.cpp b/core/jni/android_view_HardwareLayer.cpp
index 36ba892b51c4..9e49afb45790 100644
--- a/core/jni/android_view_HardwareLayer.cpp
+++ b/core/jni/android_view_HardwareLayer.cpp
@@ -79,6 +79,12 @@ static void android_view_HardwareLayer_updateSurfaceTexture(JNIEnv* env, jobject
     layer->updateTexImage();
 }
 
+static jint android_view_HardwareLayer_getTexName(JNIEnv* env, jobject clazz,
+        jlong layerUpdaterPtr) {
+    DeferredLayerUpdater* layer = reinterpret_cast<DeferredLayerUpdater*>(layerUpdaterPtr);
+    return layer->backingLayer()->getTextureId();
+}
+
 // ----------------------------------------------------------------------------
 // JNI Glue
 // ----------------------------------------------------------------------------
@@ -92,6 +98,8 @@ static JNINativeMethod gMethods[] = {
     { "nSetSurfaceTexture",      "(JLandroid/graphics/SurfaceTexture;Z)V",
             (void*) android_view_HardwareLayer_setSurfaceTexture },
     { "nUpdateSurfaceTexture",   "(J)V",       (void*) android_view_HardwareLayer_updateSurfaceTexture },
+
+    { "nGetTexName",             "(J)I",       (void*) android_view_HardwareLayer_getTexName },
 };
 
 int register_android_view_HardwareLayer(JNIEnv* env) {
diff --git a/libs/hwui/DisplayListCanvas.cpp b/libs/hwui/DisplayListCanvas.cpp
index 22cddfc6d1cd..61c5883cfbfb 100644
--- a/libs/hwui/DisplayListCanvas.cpp
+++ b/libs/hwui/DisplayListCanvas.cpp
@@ -221,11 +221,11 @@ void DisplayListCanvas::drawRenderNode(RenderNode* renderNode) {
     addRenderNodeOp(op);
 }
 
-void DisplayListCanvas::drawLayer(DeferredLayerUpdater* layerHandle) {
+void DisplayListCanvas::drawLayer(DeferredLayerUpdater* layerHandle, float x, float y) {
     // We ref the DeferredLayerUpdater due to its thread-safe ref-counting
     // semantics.
     mDisplayListData->ref(layerHandle);
-    addDrawOp(new (alloc()) DrawLayerOp(layerHandle->backingLayer()));
+    addDrawOp(new (alloc()) DrawLayerOp(layerHandle->backingLayer(), x, y));
 }
 
 void DisplayListCanvas::drawBitmap(const SkBitmap* bitmap, const SkPaint* paint) {
diff --git a/libs/hwui/DisplayListCanvas.h b/libs/hwui/DisplayListCanvas.h
index 978cceab3779..3b619046612f 100644
--- a/libs/hwui/DisplayListCanvas.h
+++ b/libs/hwui/DisplayListCanvas.h
@@ -91,7 +91,7 @@ public:
 // ----------------------------------------------------------------------------
 // HWUI Canvas draw operations - special
 // ----------------------------------------------------------------------------
-    void drawLayer(DeferredLayerUpdater* layerHandle);
+    void drawLayer(DeferredLayerUpdater* layerHandle, float x, float y);
     void drawRenderNode(RenderNode* renderNode);
 
     // TODO: rename for consistency
diff --git a/libs/hwui/DisplayListOp.h b/libs/hwui/DisplayListOp.h
index cd5d0ddc8c76..8ff58d4f64f5 100644
--- a/libs/hwui/DisplayListOp.h
+++ b/libs/hwui/DisplayListOp.h
@@ -1541,15 +1541,15 @@ private:
 
 class DrawLayerOp : public DrawOp {
 public:
-    DrawLayerOp(Layer* layer)
-            : DrawOp(nullptr), mLayer(layer) {}
+    DrawLayerOp(Layer* layer, float x, float y)
+            : DrawOp(nullptr), mLayer(layer), mX(x), mY(y) {}
 
     virtual void applyDraw(OpenGLRenderer& renderer, Rect& dirty) override {
-        renderer.drawLayer(mLayer);
+        renderer.drawLayer(mLayer, mX, mY);
     }
 
     virtual void output(int level, uint32_t logFlags) const override {
-        OP_LOG("Draw Layer %p", mLayer);
+        OP_LOG("Draw Layer %p at %f %f", mLayer, mX, mY);
     }
 
     virtual const char* name() override { return "DrawLayer"; }
diff --git a/libs/hwui/OpenGLRenderer.cpp b/libs/hwui/OpenGLRenderer.cpp
index 84f35f8beacf..7a56d42b65e2 100644
--- a/libs/hwui/OpenGLRenderer.cpp
+++ b/libs/hwui/OpenGLRenderer.cpp
@@ -2267,7 +2267,7 @@ void OpenGLRenderer::drawPath(const SkPath* path, const SkPaint* paint) {
     mDirty = true;
 }
 
-void OpenGLRenderer::drawLayer(Layer* layer) {
+void OpenGLRenderer::drawLayer(Layer* layer, float x, float y) {
     if (!layer) {
         return;
     }
@@ -2283,7 +2283,7 @@ void OpenGLRenderer::drawLayer(Layer* layer) {
 
     bool clipRequired = false;
     const bool rejected = mState.calculateQuickRejectForScissor(
-            0, 0, layer->layer.getWidth(), layer->layer.getHeight(),
+            x, y, x + layer->layer.getWidth(), y + layer->layer.getHeight(),
             &clipRequired, nullptr, false);
 
     if (rejected) {
@@ -2312,7 +2312,7 @@ void OpenGLRenderer::drawLayer(Layer* layer) {
                     .setMeshTexturedIndexedQuads(layer->mesh, layer->meshElementCount)
                     .setFillLayer(layer->getTexture(), layer->getColorFilter(), getLayerAlpha(layer), layer->getMode(), Blend::ModeOrderSwap::NoSwap)
                     .setTransform(*currentSnapshot(),  TransformFlags::None)
-                    .setModelViewOffsetRectSnap(0, 0, Rect(0, 0, layer->layer.getWidth(), layer->layer.getHeight()))
+                    .setModelViewOffsetRectSnap(x, y, Rect(0, 0, layer->layer.getWidth(), layer->layer.getHeight()))
                     .build();
             DRAW_DOUBLE_STENCIL_IF(!layer->hasDrawnSinceUpdate, renderGlop(glop));
 #if DEBUG_LAYERS_AS_REGIONS
@@ -2325,7 +2325,7 @@ void OpenGLRenderer::drawLayer(Layer* layer) {
 
             SkPaint paint;
             paint.setColor(0x7f00ff00);
-            drawColorRect(0, 0, layer->layer.getWidth(), layer->layer.getHeight(), &paint);
+            drawColorRect(x, y, x + layer->layer.getWidth(), y + layer->layer.getHeight(), &paint);
         }
     }
     layer->hasDrawnSinceUpdate = true;
diff --git a/libs/hwui/OpenGLRenderer.h b/libs/hwui/OpenGLRenderer.h
index 501a219b91f4..4f75482f06e5 100755
--- a/libs/hwui/OpenGLRenderer.h
+++ b/libs/hwui/OpenGLRenderer.h
@@ -187,7 +187,7 @@ public:
             const SkPaint* paint, int flags);
 
     void drawRenderNode(RenderNode* displayList, Rect& dirty, int32_t replayFlags = 1);
-    void drawLayer(Layer* layer);
+    void drawLayer(Layer* layer, float x, float y);
     void drawBitmap(const SkBitmap* bitmap, const SkPaint* paint);
     void drawBitmaps(const SkBitmap* bitmap, AssetAtlas::Entry* entry, int bitmapCount,
             TextureVertex* vertices, bool pureTranslate, const Rect& bounds, const SkPaint* paint);
diff --git a/libs/hwui/RenderNode.cpp b/libs/hwui/RenderNode.cpp
index 4ae152196be0..48da3e8b380e 100644
--- a/libs/hwui/RenderNode.cpp
+++ b/libs/hwui/RenderNode.cpp
@@ -875,7 +875,7 @@ void RenderNode::issueOperations(OpenGLRenderer& renderer, T& handler) {
         renderer.setBaseTransform(initialTransform);
 
         if (drawLayer) {
-            handler(new (alloc) DrawLayerOp(mLayer),
+            handler(new (alloc) DrawLayerOp(mLayer, 0, 0),
                     renderer.getSaveCount() - 1, properties().getClipToBounds());
         } else {
             const int saveCountOffset = renderer.getSaveCount() - 1;