diff options
author | fmalita <fmalita@chromium.org> | 2016-08-26 10:13:39 -0700 |
---|---|---|
committer | Commit bot <commit-bot@chromium.org> | 2016-08-26 10:13:40 -0700 |
commit | ce2fc6a045ea9ca1b0d78b2df793296d4e0cb3b3 (patch) | |
tree | 1c5ed9a62385eed4d60242761b29c1460ebf9cd5 /gm/imagemasksubset.cpp | |
parent | 358f93de3d16bd3fe5b0d043ea15b59ebc994e86 (diff) |
Add imagemasksubset GM
(GM for non-N32 SkImage subsetting)
BUG=skia:5687
R=bsalomon@google.com,robertphillips@google.com,reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2286733002
Review-Url: https://codereview.chromium.org/2286733002
Diffstat (limited to 'gm/imagemasksubset.cpp')
-rw-r--r-- | gm/imagemasksubset.cpp | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/gm/imagemasksubset.cpp b/gm/imagemasksubset.cpp new file mode 100644 index 0000000000..80e63f6bc7 --- /dev/null +++ b/gm/imagemasksubset.cpp @@ -0,0 +1,84 @@ +/* + * Copyright 2016 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "gm.h" +#include "SkCanvas.h" +#include "SkImage.h" +#include "SkImageGenerator.h" +#include "SkSurface.h" +#include "sk_tool_utils.h" + +namespace { + +const SkISize kSize = SkISize::Make(100, 100); +const SkIRect kSubset = SkIRect::MakeLTRB(25, 25, 75, 75); +const SkRect kDest = SkRect::MakeXYWH(10, 10, 100, 100); + +sk_sp<SkImage> make_mask(const sk_sp<SkSurface>& surface) { + sk_tool_utils::draw_checkerboard(surface->getCanvas(), 0x80808080, 0x00000000, 5); + return surface->makeImageSnapshot(); +} + +class MaskGenerator final : public SkImageGenerator { +public: + MaskGenerator(const SkImageInfo& info) : INHERITED(info) {} + + bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, SkPMColor*, + int*) override { + if (info.colorType() == kIndex_8_SkColorType) { + return false; + } + + make_mask(SkSurface::MakeRasterDirect(info, pixels, rowBytes)); + return true; + } + +private: + typedef SkImageGenerator INHERITED; +}; + +using MakerT = sk_sp<SkImage>(*)(SkCanvas*, const SkImageInfo&); +const MakerT makers[] = { + // SkImage_Raster + [](SkCanvas*, const SkImageInfo& info) -> sk_sp<SkImage> { + return make_mask(SkSurface::MakeRaster(info)); + }, + + // SkImage_Gpu + [](SkCanvas* c, const SkImageInfo& info) -> sk_sp<SkImage> { + sk_sp<SkSurface> surface; +#if SK_SUPPORT_GPU + surface = SkSurface::MakeRenderTarget(c->getGrContext(), SkBudgeted::kNo, info); +#endif + return make_mask(surface ? surface : SkSurface::MakeRaster(info)); + }, + + // SkImage_Generator + [](SkCanvas*, const SkImageInfo& info) -> sk_sp<SkImage> { + return SkImage::MakeFromGenerator(new MaskGenerator(info)); + }, +}; + +} // anonymous ns + +// Checks whether subset SkImages preserve the original color type (A8 in this case). +DEF_SIMPLE_GM(imagemasksubset, canvas, 480, 480) { + SkPaint paint; + paint.setColor(0xff00ff00); + + const SkImageInfo info = SkImageInfo::MakeA8(kSize.width(), kSize.height()); + + for (size_t i = 0; i < SK_ARRAY_COUNT(makers); ++i) { + sk_sp<SkImage> image = makers[i](canvas, info); + if (image) { + canvas->drawImageRect(image, SkRect::Make(kSubset), kDest, &paint); + sk_sp<SkImage> subset = image->makeSubset(kSubset); + canvas->drawImageRect(subset, kDest.makeOffset(kSize.width() * 1.5f, 0), &paint); + } + canvas->translate(0, kSize.height() * 1.5f); + } +} |