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Diffstat (limited to 'libs/hwui/OpenGLReadback.cpp')
-rw-r--r--libs/hwui/OpenGLReadback.cpp287
1 files changed, 0 insertions, 287 deletions
diff --git a/libs/hwui/OpenGLReadback.cpp b/libs/hwui/OpenGLReadback.cpp
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index 11432d629650..000000000000
--- a/libs/hwui/OpenGLReadback.cpp
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-/*
- * Copyright (C) 2016 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 "OpenGLReadback.h"
-
-#include "Caches.h"
-#include "GlLayer.h"
-#include "GlopBuilder.h"
-#include "Image.h"
-#include "renderstate/RenderState.h"
-#include "renderthread/EglManager.h"
-#include "utils/GLUtils.h"
-
-#include <GLES2/gl2.h>
-#include <gui/Surface.h>
-#include <ui/Fence.h>
-#include <ui/GraphicBuffer.h>
-
-namespace android {
-namespace uirenderer {
-
-CopyResult OpenGLReadback::copySurfaceInto(Surface& surface, const Rect& srcRect,
- SkBitmap* bitmap) {
- ATRACE_CALL();
- // Setup the source
- sp<GraphicBuffer> sourceBuffer;
- sp<Fence> sourceFence;
- Matrix4 texTransform;
- status_t err = surface.getLastQueuedBuffer(&sourceBuffer, &sourceFence, texTransform.data);
- texTransform.invalidateType();
- if (err != NO_ERROR) {
- ALOGW("Failed to get last queued buffer, error = %d", err);
- return CopyResult::UnknownError;
- }
- if (!sourceBuffer.get()) {
- ALOGW("Surface doesn't have any previously queued frames, nothing to readback from");
- return CopyResult::SourceEmpty;
- }
- if (sourceBuffer->getUsage() & GRALLOC_USAGE_PROTECTED) {
- ALOGW("Surface is protected, unable to copy from it");
- return CopyResult::SourceInvalid;
- }
- err = sourceFence->wait(500 /* ms */);
- if (err != NO_ERROR) {
- ALOGE("Timeout (500ms) exceeded waiting for buffer fence, abandoning readback attempt");
- return CopyResult::Timeout;
- }
-
- return copyGraphicBufferInto(sourceBuffer.get(), texTransform, srcRect, bitmap);
-}
-
-CopyResult OpenGLReadback::copyGraphicBufferInto(GraphicBuffer* graphicBuffer,
- Matrix4& texTransform, const Rect& srcRect,
- SkBitmap* bitmap) {
- mRenderThread.eglManager().initialize();
- // TODO: Can't use Image helper since it forces GL_TEXTURE_2D usage via
- // GL_OES_EGL_image, which doesn't work since we need samplerExternalOES
- // to be able to properly sample from the buffer.
-
- // Create the EGLImage object that maps the GraphicBuffer
- EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
- EGLClientBuffer clientBuffer = (EGLClientBuffer)graphicBuffer->getNativeBuffer();
- EGLint attrs[] = {EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, EGL_NONE};
-
- EGLImageKHR sourceImage = eglCreateImageKHR(display, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
- clientBuffer, attrs);
-
- if (sourceImage == EGL_NO_IMAGE_KHR) {
- ALOGW("eglCreateImageKHR failed (%#x)", eglGetError());
- return CopyResult::UnknownError;
- }
-
- uint32_t width = graphicBuffer->getWidth();
- uint32_t height = graphicBuffer->getHeight();
- CopyResult copyResult =
- copyImageInto(sourceImage, texTransform, width, height, srcRect, bitmap);
-
- // All we're flushing & finishing is the deletion of the texture since
- // copyImageInto already did a major flush & finish as an implicit
- // part of glReadPixels, so this shouldn't pose any major stalls.
- glFinish();
- eglDestroyImageKHR(display, sourceImage);
- return copyResult;
-}
-
-CopyResult OpenGLReadback::copyGraphicBufferInto(GraphicBuffer* graphicBuffer, SkBitmap* bitmap) {
- Rect srcRect;
- Matrix4 transform;
- transform.loadScale(1, -1, 1);
- transform.translate(0, -1);
- return copyGraphicBufferInto(graphicBuffer, transform, srcRect, bitmap);
-}
-
-static float sFlipVInit[16] = {
- 1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1,
-};
-
-static const Matrix4 sFlipV(sFlipVInit);
-
-////////////////////////////////////////////////////////////////////////////////
-////////////////////////////////////////////////////////////////////////////////
-
-inline CopyResult copyTextureInto(Caches& caches, RenderState& renderState, Texture& sourceTexture,
- const Matrix4& texTransform, const Rect& srcRect,
- SkBitmap* bitmap) {
- int destWidth = bitmap->width();
- int destHeight = bitmap->height();
- if (destWidth > caches.maxTextureSize || destHeight > caches.maxTextureSize) {
- ALOGW("Can't copy surface into bitmap, %dx%d exceeds max texture size %d", destWidth,
- destHeight, caches.maxTextureSize);
- return CopyResult::DestinationInvalid;
- }
-
- if (bitmap->colorType() == kRGBA_F16_SkColorType &&
- !caches.extensions().hasRenderableFloatTextures()) {
- ALOGW("Can't copy surface into bitmap, RGBA_F16 config is not supported");
- return CopyResult::DestinationInvalid;
- }
-
- GLuint fbo = renderState.createFramebuffer();
- if (!fbo) {
- ALOGW("Could not obtain an FBO");
- return CopyResult::UnknownError;
- }
-
- GLuint texture;
-
- GLenum format;
- GLenum internalFormat;
- GLenum type;
-
- switch (bitmap->colorType()) {
- case kAlpha_8_SkColorType:
- format = GL_ALPHA;
- internalFormat = GL_ALPHA;
- type = GL_UNSIGNED_BYTE;
- break;
- case kRGB_565_SkColorType:
- format = GL_RGB;
- internalFormat = GL_RGB;
- type = GL_UNSIGNED_SHORT_5_6_5;
- break;
- case kARGB_4444_SkColorType:
- format = GL_RGBA;
- internalFormat = GL_RGBA;
- type = GL_UNSIGNED_SHORT_4_4_4_4;
- break;
- case kRGBA_F16_SkColorType:
- format = GL_RGBA;
- internalFormat = GL_RGBA16F;
- type = GL_HALF_FLOAT;
- break;
- case kN32_SkColorType:
- default:
- format = GL_RGBA;
- internalFormat = GL_RGBA;
- type = GL_UNSIGNED_BYTE;
- break;
- }
-
- renderState.bindFramebuffer(fbo);
-
- // TODO: Use layerPool or something to get this maybe? But since we
- // need explicit format control we can't currently.
-
- // Setup the rendertarget
- glGenTextures(1, &texture);
- caches.textureState().activateTexture(0);
- caches.textureState().bindTexture(texture);
- glPixelStorei(GL_PACK_ALIGNMENT, bitmap->bytesPerPixel());
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
- glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, destWidth, destHeight, 0, format, type, nullptr);
- glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
-
- {
- bool requiresFilter;
- // Draw & readback
- renderState.setViewport(destWidth, destHeight);
- renderState.scissor().setEnabled(false);
- renderState.blend().syncEnabled();
- renderState.stencil().disable();
-
- Matrix4 croppedTexTransform(texTransform);
- if (!srcRect.isEmpty()) {
- // We flipV to convert to 0,0 top-left for the srcRect
- // coordinates then flip back to 0,0 bottom-left for
- // GLES coordinates.
- croppedTexTransform.multiply(sFlipV);
- croppedTexTransform.translate(srcRect.left / sourceTexture.width(),
- srcRect.top / sourceTexture.height(), 0);
- croppedTexTransform.scale(srcRect.getWidth() / sourceTexture.width(),
- srcRect.getHeight() / sourceTexture.height(), 1);
- croppedTexTransform.multiply(sFlipV);
- requiresFilter = srcRect.getWidth() != (float)destWidth ||
- srcRect.getHeight() != (float)destHeight;
- } else {
- requiresFilter = sourceTexture.width() != (uint32_t)destWidth ||
- sourceTexture.height() != (uint32_t)destHeight;
- }
- Glop glop;
- GlopBuilder(renderState, caches, &glop)
- .setRoundRectClipState(nullptr)
- .setMeshTexturedUnitQuad(nullptr)
- .setFillExternalTexture(sourceTexture, croppedTexTransform, requiresFilter)
- .setTransform(Matrix4::identity(), TransformFlags::None)
- .setModelViewMapUnitToRect(Rect(destWidth, destHeight))
- .build();
- Matrix4 ortho;
- ortho.loadOrtho(destWidth, destHeight);
- renderState.render(glop, ortho, false);
-
- // TODO: We should convert to linear space when the target is RGBA16F
- glReadPixels(0, 0, bitmap->width(), bitmap->height(), format, type, bitmap->getPixels());
- bitmap->notifyPixelsChanged();
- }
-
- // Cleanup
- caches.textureState().deleteTexture(texture);
- renderState.deleteFramebuffer(fbo);
-
- GL_CHECKPOINT(MODERATE);
-
- return CopyResult::Success;
-}
-
-CopyResult OpenGLReadbackImpl::copyImageInto(EGLImageKHR eglImage, const Matrix4& imgTransform,
- int imgWidth, int imgHeight, const Rect& srcRect,
- SkBitmap* bitmap) {
- // If this is a 90 or 270 degree rotation we need to swap width/height
- // This is a fuzzy way of checking that.
- if (imgTransform[Matrix4::kSkewX] >= 0.5f || imgTransform[Matrix4::kSkewX] <= -0.5f) {
- std::swap(imgWidth, imgHeight);
- }
-
- Caches& caches = Caches::getInstance();
- GLuint sourceTexId;
- // Create a 2D texture to sample from the EGLImage
- glGenTextures(1, &sourceTexId);
- caches.textureState().bindTexture(GL_TEXTURE_EXTERNAL_OES, sourceTexId);
- glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, eglImage);
-
- GLenum status = GL_NO_ERROR;
- while ((status = glGetError()) != GL_NO_ERROR) {
- ALOGW("glEGLImageTargetTexture2DOES failed (%#x)", status);
- return CopyResult::UnknownError;
- }
-
- Texture sourceTexture(caches);
- sourceTexture.wrap(sourceTexId, imgWidth, imgHeight, 0, 0 /* total lie */,
- GL_TEXTURE_EXTERNAL_OES);
-
- CopyResult copyResult = copyTextureInto(caches, mRenderThread.renderState(), sourceTexture,
- imgTransform, srcRect, bitmap);
- sourceTexture.deleteTexture();
- return copyResult;
-}
-
-bool OpenGLReadbackImpl::copyLayerInto(renderthread::RenderThread& renderThread, GlLayer& layer,
- SkBitmap* bitmap) {
- if (!layer.isRenderable()) {
- // layer has never been updated by DeferredLayerUpdater, abort copy
- return false;
- }
-
- return CopyResult::Success == copyTextureInto(Caches::getInstance(), renderThread.renderState(),
- layer.getTexture(), layer.getTexTransform(),
- Rect(), bitmap);
-}
-
-} // namespace uirenderer
-} // namespace android
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