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84 lines
3.0 KiB
84 lines
3.0 KiB
4 months ago
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/*
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* Copyright 2019 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkBitmap.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkPixmap.h"
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#include "include/core/SkSurface.h"
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#include "include/encode/SkJpegEncoder.h"
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#include "include/gpu/GrRecordingContext.h"
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#include "include/utils/SkRandom.h"
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#include "src/core/SkCachedData.h"
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#include "src/image/SkImage_Base.h"
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#include "tools/gpu/YUVUtils.h"
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static constexpr int kScale = 10;
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static constexpr SkISize kImageDim = {5, 5};
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static sk_sp<SkImage> make_image(GrRecordingContext* rContext) {
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// Generate a small jpeg with odd dimensions.
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SkBitmap bmp;
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bmp.allocPixels(SkImageInfo::Make(kImageDim, kRGBA_8888_SkColorType, kPremul_SkAlphaType));
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SkRandom random;
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// These random values won't compress well, but it doesn't matter. This test exists to
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// compare the GPU YUV code path to the SW.
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for (int y = 0; y < bmp.height(); ++y) {
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for (int x = 0; x < bmp.width(); ++x) {
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*bmp.getAddr32(x, y) = random.nextU() | 0xFF000000;
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}
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}
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bmp.notifyPixelsChanged();
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SkDynamicMemoryWStream stream;
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SkJpegEncoder::Options options;
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options.fDownsample = SkJpegEncoder::Downsample::k420;
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options.fQuality = 100;
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if (!SkJpegEncoder::Encode(&stream, bmp.pixmap(), options)) {
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return nullptr;
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}
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auto imageHelper = sk_gpu_test::LazyYUVImage::Make(stream.detachAsData());
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if (!imageHelper) {
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return nullptr;
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}
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return imageHelper->refImage(rContext, sk_gpu_test::LazyYUVImage::Type::kFromPixmaps);
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}
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// This GM tests that the YUVA image code path in the GPU backend handles odd sized images with
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// 420 chroma subsampling correctly.
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DEF_SIMPLE_GM_CAN_FAIL(yuv420_odd_dim, canvas, errMsg,
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kScale* kImageDim.width(), kScale* kImageDim.height()) {
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auto rContext = canvas->recordingContext();
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if (!rContext) {
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// This GM exists to exercise GPU planar images.
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return skiagm::DrawResult::kSkip;
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}
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auto image = make_image(rContext);
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if (!image) {
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return rContext->abandoned() ? skiagm::DrawResult::kOk : skiagm::DrawResult::kFail;
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}
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// We draw the image offscreen and then blow it up using nearest filtering by kScale.
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// This avoids skbug.com/9693
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sk_sp<SkSurface> surface;
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if (auto origSurface = canvas->getSurface()) {
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surface = origSurface->makeSurface(image->width(), image->height());
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} else {
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auto ct = canvas->imageInfo().colorType();
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if (ct == kUnknown_SkColorType) {
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ct = image->colorType();
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}
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auto info = canvas->imageInfo().makeColorType(ct);
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info = info.makeAlphaType(kPremul_SkAlphaType);
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surface = SkSurface::MakeRaster(info);
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}
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surface->getCanvas()->drawImage(image, 0, 0);
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canvas->scale(kScale, kScale);
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canvas->drawImage(surface->makeImageSnapshot(), 0, 0);
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return skiagm::DrawResult::kOk;
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}
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