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/*
* Copyright 2017 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 "SkPaint.h"
#include "SkPicture.h"
#include "SkPictureRecorder.h"
#include "SkShader.h"
#include "SkSurface.h"
class PictureShaderCacheGM : public skiagm::GM {
public:
PictureShaderCacheGM(SkScalar tileSize)
: fTileSize(tileSize) {
}
protected:
void drawTile(SkCanvas* canvas) {
SkPaint paint;
paint.setColor(SK_ColorGREEN);
paint.setStyle(SkPaint::kFill_Style);
paint.setAntiAlias(true);
canvas->drawCircle(fTileSize / 4, fTileSize / 4, fTileSize / 4, paint);
canvas->drawRect(SkRect::MakeXYWH(fTileSize / 2, fTileSize / 2,
fTileSize / 2, fTileSize / 2), paint);
paint.setColor(SK_ColorRED);
canvas->drawLine(fTileSize / 2, fTileSize * 1 / 3,
fTileSize / 2, fTileSize * 2 / 3, paint);
canvas->drawLine(fTileSize * 1 / 3, fTileSize / 2,
fTileSize * 2 / 3, fTileSize / 2, paint);
}
void onOnceBeforeDraw() override {
SkPictureRecorder recorder;
SkCanvas* pictureCanvas = recorder.beginRecording(fTileSize, fTileSize, nullptr, 0);
this->drawTile(pictureCanvas);
fPicture = recorder.finishRecordingAsPicture();
}
SkString onShortName() override {
return SkString("pictureshadercache");
}
SkISize onISize() override {
return SkISize::Make(100, 100);
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setShader(SkShader::MakePictureShader(fPicture, SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode, nullptr,
nullptr));
{
// Render in a funny color space that converts green to yellow.
SkMatrix44 greenToYellow(SkMatrix44::kIdentity_Constructor);
greenToYellow.setFloat(0, 1, 1.0f);
sk_sp<SkColorSpace> gty = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
greenToYellow);
SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100, std::move(gty));
sk_sp<SkSurface> surface(SkSurface::MakeRaster(info));
surface->getCanvas()->drawRect(SkRect::MakeWH(fTileSize, fTileSize), paint);
}
// When we draw to the canvas, we should see green because we should *not* reuse the
// cached picture shader.
canvas->drawRect(SkRect::MakeWH(fTileSize, fTileSize), paint);
}
private:
SkScalar fTileSize;
sk_sp<SkPicture> fPicture;
SkBitmap fBitmap;
typedef GM INHERITED;
};
DEF_GM(return new PictureShaderCacheGM(100);)
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