summaryrefslogtreecommitdiff
path: root/libs/surfaceflinger/TextureManager.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'libs/surfaceflinger/TextureManager.cpp')
-rw-r--r--libs/surfaceflinger/TextureManager.cpp241
1 files changed, 241 insertions, 0 deletions
diff --git a/libs/surfaceflinger/TextureManager.cpp b/libs/surfaceflinger/TextureManager.cpp
new file mode 100644
index 000000000000..ee2159b3ffed
--- /dev/null
+++ b/libs/surfaceflinger/TextureManager.cpp
@@ -0,0 +1,241 @@
+/*
+ * 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 <stdlib.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/Log.h>
+
+#include <ui/GraphicBuffer.h>
+
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+
+#include <hardware/hardware.h>
+
+#include "clz.h"
+#include "DisplayHardware/DisplayHardware.h"
+#include "TextureManager.h"
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+TextureManager::TextureManager(uint32_t flags)
+ : mFlags(flags)
+{
+}
+
+GLuint TextureManager::createTexture()
+{
+ GLuint textureName = -1;
+ glGenTextures(1, &textureName);
+ glBindTexture(GL_TEXTURE_2D, textureName);
+ glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+ glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ return textureName;
+}
+
+bool TextureManager::isSupportedYuvFormat(int format)
+{
+ switch (format) {
+ case HAL_PIXEL_FORMAT_YCbCr_422_SP:
+ case HAL_PIXEL_FORMAT_YCbCr_420_SP:
+ case HAL_PIXEL_FORMAT_YCbCr_422_P:
+ case HAL_PIXEL_FORMAT_YCbCr_420_P:
+ case HAL_PIXEL_FORMAT_YCbCr_422_I:
+ case HAL_PIXEL_FORMAT_YCbCr_420_I:
+ case HAL_PIXEL_FORMAT_YCrCb_420_SP:
+ return true;
+ }
+ return false;
+}
+
+status_t TextureManager::initEglImage(Image* texture,
+ EGLDisplay dpy, const sp<GraphicBuffer>& buffer)
+{
+ status_t err = NO_ERROR;
+ if (!texture->dirty) return err;
+
+ // free the previous image
+ if (texture->image != EGL_NO_IMAGE_KHR) {
+ eglDestroyImageKHR(dpy, texture->image);
+ texture->image = EGL_NO_IMAGE_KHR;
+ }
+
+ // construct an EGL_NATIVE_BUFFER_ANDROID
+ android_native_buffer_t* clientBuf = buffer->getNativeBuffer();
+
+ // create the new EGLImageKHR
+ const EGLint attrs[] = {
+ EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
+ EGL_NONE, EGL_NONE
+ };
+ texture->image = eglCreateImageKHR(
+ dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
+ (EGLClientBuffer)clientBuf, attrs);
+
+ if (texture->image != EGL_NO_IMAGE_KHR) {
+ if (texture->name == -1UL) {
+ texture->name = createTexture();
+ texture->width = 0;
+ texture->height = 0;
+ }
+ glBindTexture(GL_TEXTURE_2D, texture->name);
+ glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,
+ (GLeglImageOES)texture->image);
+ GLint error = glGetError();
+ if (error != GL_NO_ERROR) {
+ LOGE("glEGLImageTargetTexture2DOES(%p) failed err=0x%04x",
+ texture->image, error);
+ err = INVALID_OPERATION;
+ } else {
+ // Everything went okay!
+ texture->dirty = false;
+ texture->width = clientBuf->width;
+ texture->height = clientBuf->height;
+ }
+ } else {
+ LOGE("eglCreateImageKHR() failed. err=0x%4x", eglGetError());
+ err = INVALID_OPERATION;
+ }
+ return err;
+}
+
+status_t TextureManager::loadTexture(Texture* texture,
+ const Region& dirty, const GGLSurface& t)
+{
+ if (texture->name == -1UL) {
+ texture->name = createTexture();
+ texture->width = 0;
+ texture->height = 0;
+ }
+
+ glBindTexture(GL_TEXTURE_2D, texture->name);
+
+ /*
+ * In OpenGL ES we can't specify a stride with glTexImage2D (however,
+ * GL_UNPACK_ALIGNMENT is a limited form of stride).
+ * So if the stride here isn't representable with GL_UNPACK_ALIGNMENT, we
+ * need to do something reasonable (here creating a bigger texture).
+ *
+ * extra pixels = (((stride - width) * pixelsize) / GL_UNPACK_ALIGNMENT);
+ *
+ * This situation doesn't happen often, but some h/w have a limitation
+ * for their framebuffer (eg: must be multiple of 8 pixels), and
+ * we need to take that into account when using these buffers as
+ * textures.
+ *
+ * This should never be a problem with POT textures
+ */
+
+ int unpack = __builtin_ctz(t.stride * bytesPerPixel(t.format));
+ unpack = 1 << ((unpack > 3) ? 3 : unpack);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, unpack);
+
+ /*
+ * round to POT if needed
+ */
+ if (!(mFlags & DisplayHardware::NPOT_EXTENSION)) {
+ texture->NPOTAdjust = true;
+ }
+
+ if (texture->NPOTAdjust) {
+ // find the smallest power-of-two that will accommodate our surface
+ texture->potWidth = 1 << (31 - clz(t.width));
+ texture->potHeight = 1 << (31 - clz(t.height));
+ if (texture->potWidth < t.width) texture->potWidth <<= 1;
+ if (texture->potHeight < t.height) texture->potHeight <<= 1;
+ texture->wScale = float(t.width) / texture->potWidth;
+ texture->hScale = float(t.height) / texture->potHeight;
+ } else {
+ texture->potWidth = t.width;
+ texture->potHeight = t.height;
+ }
+
+ Rect bounds(dirty.bounds());
+ GLvoid* data = 0;
+ if (texture->width != t.width || texture->height != t.height) {
+ texture->width = t.width;
+ texture->height = t.height;
+
+ // texture size changed, we need to create a new one
+ bounds.set(Rect(t.width, t.height));
+ if (t.width == texture->potWidth &&
+ t.height == texture->potHeight) {
+ // we can do it one pass
+ data = t.data;
+ }
+
+ if (t.format == HAL_PIXEL_FORMAT_RGB_565) {
+ glTexImage2D(GL_TEXTURE_2D, 0,
+ GL_RGB, texture->potWidth, texture->potHeight, 0,
+ GL_RGB, GL_UNSIGNED_SHORT_5_6_5, data);
+ } else if (t.format == HAL_PIXEL_FORMAT_RGBA_4444) {
+ glTexImage2D(GL_TEXTURE_2D, 0,
+ GL_RGBA, texture->potWidth, texture->potHeight, 0,
+ GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, data);
+ } else if (t.format == HAL_PIXEL_FORMAT_RGBA_8888 ||
+ t.format == HAL_PIXEL_FORMAT_RGBX_8888) {
+ glTexImage2D(GL_TEXTURE_2D, 0,
+ GL_RGBA, texture->potWidth, texture->potHeight, 0,
+ GL_RGBA, GL_UNSIGNED_BYTE, data);
+ } else if (isSupportedYuvFormat(t.format)) {
+ // just show the Y plane of YUV buffers
+ glTexImage2D(GL_TEXTURE_2D, 0,
+ GL_LUMINANCE, texture->potWidth, texture->potHeight, 0,
+ GL_LUMINANCE, GL_UNSIGNED_BYTE, data);
+ } else {
+ // oops, we don't handle this format!
+ LOGE("texture=%d, using format %d, which is not "
+ "supported by the GL", texture->name, t.format);
+ }
+ }
+ if (!data) {
+ if (t.format == HAL_PIXEL_FORMAT_RGB_565) {
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ 0, bounds.top, t.width, bounds.height(),
+ GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
+ t.data + bounds.top*t.stride*2);
+ } else if (t.format == HAL_PIXEL_FORMAT_RGBA_4444) {
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ 0, bounds.top, t.width, bounds.height(),
+ GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4,
+ t.data + bounds.top*t.stride*2);
+ } else if (t.format == HAL_PIXEL_FORMAT_RGBA_8888 ||
+ t.format == HAL_PIXEL_FORMAT_RGBX_8888) {
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ 0, bounds.top, t.width, bounds.height(),
+ GL_RGBA, GL_UNSIGNED_BYTE,
+ t.data + bounds.top*t.stride*4);
+ } else if (isSupportedYuvFormat(t.format)) {
+ // just show the Y plane of YUV buffers
+ glTexSubImage2D(GL_TEXTURE_2D, 0,
+ 0, bounds.top, t.width, bounds.height(),
+ GL_LUMINANCE, GL_UNSIGNED_BYTE,
+ t.data + bounds.top*t.stride);
+ }
+ }
+ return NO_ERROR;
+}
+
+// ---------------------------------------------------------------------------
+
+}; // namespace android
generated by cgit v1.2.3-59-g8ed1b (git 2.39.0) at 2025-11-03 23:34:20 +0000