c4fbada76a
Test: CTS TextureViewTests and UIRendering Change-Id: I2969c8f5a975bfd9aebcbb585c64d1fcbb2487c2
122 lines
4.6 KiB
C++
122 lines
4.6 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "SkiaOpenGLReadback.h"
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#include "Matrix.h"
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#include "Properties.h"
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#include <SkCanvas.h>
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#include <SkSurface.h>
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#include <gl/GrGLInterface.h>
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#include <gl/GrGLTypes.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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using namespace android::uirenderer::renderthread;
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namespace android {
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namespace uirenderer {
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namespace skiapipeline {
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CopyResult SkiaOpenGLReadback::copyImageInto(EGLImageKHR eglImage, const Matrix4& imgTransform,
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int imgWidth, int imgHeight, const Rect& srcRect, SkBitmap* bitmap) {
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GLuint sourceTexId;
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glGenTextures(1, &sourceTexId);
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glBindTexture(GL_TEXTURE_EXTERNAL_OES, sourceTexId);
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glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, eglImage);
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sk_sp<GrContext> grContext = sk_ref_sp(mRenderThread.getGrContext());
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if (Properties::getRenderPipelineType() == RenderPipelineType::SkiaVulkan) {
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sk_sp<const GrGLInterface> glInterface(GrGLCreateNativeInterface());
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LOG_ALWAYS_FATAL_IF(!glInterface.get());
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grContext.reset(GrContext::Create(GrBackend::kOpenGL_GrBackend,
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(GrBackendContext)glInterface.get()));
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} else {
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grContext->resetContext();
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}
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GrGLTextureInfo externalTexture;
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externalTexture.fTarget = GL_TEXTURE_EXTERNAL_OES;
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externalTexture.fID = sourceTexId;
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GrBackendTextureDesc textureDescription;
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textureDescription.fWidth = imgWidth;
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textureDescription.fHeight = imgHeight;
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textureDescription.fConfig = kRGBA_8888_GrPixelConfig;
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textureDescription.fOrigin = kTopLeft_GrSurfaceOrigin;
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textureDescription.fTextureHandle = reinterpret_cast<GrBackendObject>(&externalTexture);
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CopyResult copyResult = CopyResult::UnknownError;
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sk_sp<SkImage> image(SkImage::MakeFromAdoptedTexture(grContext.get(), textureDescription));
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if (image) {
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SkAutoLockPixels alp(*bitmap);
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// convert to Skia data structures
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const SkRect bufferRect = SkRect::MakeIWH(imgWidth, imgHeight);
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SkRect skiaSrcRect = srcRect.toSkRect();
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SkMatrix textureMatrix;
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imgTransform.copyTo(textureMatrix);
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// remove the y-flip applied to the matrix so that we can scale the srcRect.
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// This flip is not needed as we specify the origin of the texture when we
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// wrap it as an SkImage.
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SkMatrix yFlip = SkMatrix::MakeScale(1, -1);
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yFlip.postTranslate(0,1);
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textureMatrix.preConcat(yFlip);
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// copy the entire src if the rect is empty
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if (skiaSrcRect.isEmpty()) {
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skiaSrcRect = bufferRect;
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}
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// since the y-flip has been removed we can simply scale & translate
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// the source rectangle
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textureMatrix.mapRect(&skiaSrcRect);
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if (skiaSrcRect.intersect(bufferRect)) {
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SkPoint srcOrigin = SkPoint::Make(skiaSrcRect.fLeft, skiaSrcRect.fTop);
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// if we need to scale the result we must render to an offscreen buffer
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if (bitmap->width() != skiaSrcRect.width()
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|| bitmap->height() != skiaSrcRect.height()) {
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sk_sp<SkSurface> scaledSurface = SkSurface::MakeRenderTarget(
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grContext.get(), SkBudgeted::kYes, bitmap->info());
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SkPaint paint;
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paint.setBlendMode(SkBlendMode::kSrc);
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scaledSurface->getCanvas()->drawImageRect(image, skiaSrcRect,
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SkRect::MakeWH(bitmap->width(), bitmap->height()), &paint);
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image = scaledSurface->makeImageSnapshot();
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srcOrigin.set(0,0);
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}
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if (image->readPixels(bitmap->info(), bitmap->getPixels(), bitmap->rowBytes(),
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srcOrigin.fX, srcOrigin.fY)) {
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copyResult = CopyResult::Success;
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}
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}
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}
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// make sure that we have deleted the texture (in the SkImage) before we
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// destroy the EGLImage that it was created from
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image.reset();
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return copyResult;
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}
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} /* namespace skiapipeline */
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} /* namespace uirenderer */
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} /* namespace android */
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