| /* |
| * Copyright 2019 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm/gm.h" |
| |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkPixmap.h" |
| #include "include/core/SkSurface.h" |
| #include "include/encode/SkJpegEncoder.h" |
| #include "include/gpu/GrRecordingContext.h" |
| #include "include/utils/SkRandom.h" |
| #include "src/core/SkCachedData.h" |
| #include "src/image/SkImage_Base.h" |
| #include "tools/Resources.h" |
| #include "tools/gpu/YUVUtils.h" |
| |
| static constexpr int kScale = 10; |
| static constexpr SkISize kImageDim = {5, 5}; |
| |
| static sk_sp<SkImage> make_image(GrRecordingContext* rContext) { |
| // Generate a small jpeg with odd dimensions. |
| SkBitmap bmp; |
| bmp.allocPixels(SkImageInfo::Make(kImageDim, kRGBA_8888_SkColorType, kPremul_SkAlphaType)); |
| SkRandom random; |
| // These random values won't compress well, but it doesn't matter. This test exists to |
| // compare the GPU YUV code path to the SW. |
| for (int y = 0; y < bmp.height(); ++y) { |
| for (int x = 0; x < bmp.width(); ++x) { |
| *bmp.getAddr32(x, y) = random.nextU() | 0xFF000000; |
| } |
| } |
| bmp.notifyPixelsChanged(); |
| SkDynamicMemoryWStream stream; |
| SkJpegEncoder::Options options; |
| options.fDownsample = SkJpegEncoder::Downsample::k420; |
| options.fQuality = 100; |
| if (!SkJpegEncoder::Encode(&stream, bmp.pixmap(), options)) { |
| return nullptr; |
| } |
| auto imageHelper = sk_gpu_test::LazyYUVImage::Make(stream.detachAsData()); |
| if (!imageHelper) { |
| return nullptr; |
| } |
| return imageHelper->refImage(rContext, sk_gpu_test::LazyYUVImage::Type::kFromPixmaps); |
| } |
| |
| // This GM tests that the YUVA image code path in the GPU backend handles odd sized images with |
| // 420 chroma subsampling correctly. |
| DEF_SIMPLE_GM_CAN_FAIL(yuv420_odd_dim, canvas, errMsg, |
| kScale* kImageDim.width(), kScale* kImageDim.height()) { |
| auto rContext = canvas->recordingContext(); |
| if (!rContext) { |
| // This GM exists to exercise GPU planar images. |
| return skiagm::DrawResult::kSkip; |
| } |
| auto image = make_image(rContext); |
| if (!image) { |
| return rContext->abandoned() ? skiagm::DrawResult::kOk : skiagm::DrawResult::kFail; |
| } |
| // We draw the image offscreen and then blow it up using nearest filtering by kScale. |
| // This avoids skbug.com/9693 |
| sk_sp<SkSurface> surface; |
| if (auto origSurface = canvas->getSurface()) { |
| surface = origSurface->makeSurface(image->width(), image->height()); |
| } else { |
| auto ct = canvas->imageInfo().colorType(); |
| if (ct == kUnknown_SkColorType) { |
| ct = image->colorType(); |
| } |
| auto info = canvas->imageInfo().makeColorType(ct); |
| info = info.makeAlphaType(kPremul_SkAlphaType); |
| surface = SkSurface::MakeRaster(info); |
| } |
| surface->getCanvas()->drawImage(image, 0, 0); |
| canvas->scale(kScale, kScale); |
| canvas->drawImage(surface->makeImageSnapshot(), 0, 0); |
| return skiagm::DrawResult::kOk; |
| } |
| |
| // crbug.com/1210557 Subsampled planes weren't repeated at the correct frequency. |
| DEF_SIMPLE_GM_CAN_FAIL(yuv420_odd_dim_repeat, canvas, errMsg, |
| 1000, |
| 500) { |
| auto rContext = canvas->recordingContext(); |
| if (!rContext) { |
| // This GM exists to exercise GPU planar images. |
| return skiagm::DrawResult::kSkip; |
| } |
| auto image = GetResourceAsImage("images/mandrill_256.png"); |
| if (!image) { |
| return rContext->abandoned() ? skiagm::DrawResult::kOk : skiagm::DrawResult::kFail; |
| } |
| // Make sure the image is odd dimensioned. |
| int w = image->width() & 0b1 ? image->width() : image->width() - 1; |
| int h = image->height() & 0b1 ? image->height() : image->height() - 1; |
| image = image->makeSubset(SkIRect::MakeWH(w, h)); |
| |
| auto [planes, yuvaInfo] = sk_gpu_test::MakeYUVAPlanesAsA8(image.get(), |
| kJPEG_SkYUVColorSpace, |
| SkYUVAInfo::Subsampling::k420, |
| nullptr); |
| SkPixmap pixmaps[4]; |
| for (int i = 0; i < yuvaInfo.numPlanes(); ++i) { |
| planes[i]->peekPixels(&pixmaps[i]); |
| } |
| auto yuvaPixmaps = SkYUVAPixmaps::FromExternalPixmaps(yuvaInfo, pixmaps); |
| image = SkImage::MakeFromYUVAPixmaps(canvas->recordingContext(), |
| yuvaPixmaps, |
| GrMipMapped::kYes, |
| /* limit to max tex size */ false, |
| /* color space */ nullptr); |
| if (!image) { |
| *errMsg = "Could not make YUVA image"; |
| return skiagm::DrawResult::kFail; |
| } |
| int i = 0; |
| for (SkMipmapMode mm : {SkMipmapMode::kNone, SkMipmapMode::kLinear}) { |
| int j = 0; |
| for (SkFilterMode filter : {SkFilterMode::kNearest, SkFilterMode::kLinear}) { |
| canvas->save(); |
| canvas->clipRect(SkRect::MakeXYWH(500.f*j, 250.f*i, 500.f, 250.f)); |
| canvas->rotate(30.f); |
| canvas->scale(0.4f, 0.4f); // so mipmaps sampling doesn't just use base level. |
| // Large translation so that if U/V planes aren't repeated correctly WRT to Y plane we |
| // accumulate a lot of error. |
| canvas->translate(-240000.f, -240000.f); |
| auto shader = image->makeShader(SkTileMode::kRepeat, |
| SkTileMode::kRepeat, |
| SkSamplingOptions(filter, mm)); |
| SkPaint paint; |
| paint.setShader(std::move(shader)); |
| canvas->drawPaint(paint); |
| canvas->restore(); |
| ++j; |
| } |
| ++i; |
| } |
| return skiagm::DrawResult::kOk; |
| } |