blob: a5ebfacb2ff5871f1d24b5b18dd3e932242300a2 [file] [log] [blame]
/*
* 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/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColorSpace.h"
#include "include/core/SkImage.h"
#include "include/core/SkImageGenerator.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkSize.h"
#include "include/core/SkSurface.h"
#include "include/core/SkTypes.h"
#include "include/gpu/GrDirectContext.h"
#include "include/gpu/ganesh/SkSurfaceGanesh.h"
#include "tools/GpuToolUtils.h"
#include "tools/ToolUtils.h"
#if defined(SK_GRAPHITE)
#include "include/gpu/graphite/Surface.h"
#endif
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) {
ToolUtils::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, const Options&) override {
SkImageInfo surfaceInfo = info;
if (kAlpha_8_SkColorType == info.colorType()) {
surfaceInfo = surfaceInfo.makeColorSpace(nullptr);
}
make_mask(SkSurfaces::WrapPixels(surfaceInfo, pixels, rowBytes));
return true;
}
private:
using INHERITED = SkImageGenerator;
};
using MakerT = sk_sp<SkImage>(*)(SkCanvas*, const SkImageInfo&);
const MakerT makers[] = {
// SkImage_Raster
[](SkCanvas*, const SkImageInfo& info) -> sk_sp<SkImage> {
return make_mask(SkSurfaces::Raster(info));
},
// SkImage_Ganesh
[](SkCanvas* c, const SkImageInfo& info) -> sk_sp<SkImage> {
sk_sp<SkSurface> surface;
if (c->recordingContext()) {
surface =
SkSurfaces::RenderTarget(c->recordingContext(), skgpu::Budgeted::kNo, info);
} else {
#if defined(SK_GRAPHITE)
surface = SkSurfaces::RenderTarget(c->recorder(), info);
#endif
}
return make_mask(surface ? surface : SkSurfaces::Raster(info));
},
// SkImage_Lazy
[](SkCanvas*, const SkImageInfo& info) -> sk_sp<SkImage> {
return SkImages::DeferredFromGenerator(std::make_unique<MaskGenerator>(info));
},
};
} // namespace
// 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 < std::size(makers); ++i) {
sk_sp<SkImage> image = ToolUtils::MakeTextureImage(canvas, makers[i](canvas, info));
if (image) {
canvas->drawImageRect(image, SkRect::Make(kSubset), kDest, SkSamplingOptions(),
&paint, SkCanvas::kStrict_SrcRectConstraint);
sk_sp<SkImage> subset;
if (auto direct = GrAsDirectContext(canvas->recordingContext())) {
subset = image->makeSubset(direct, kSubset);
} else {
#if defined(SK_GRAPHITE)
subset = image->makeSubset(canvas->recorder(), kSubset, {});
#endif
}
canvas->drawImageRect(subset, kDest.makeOffset(kSize.width() * 1.5f, 0),
SkSamplingOptions(), &paint);
}
canvas->translate(0, kSize.height() * 1.5f);
}
}