101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
/*
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* Copyright 2017 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/SkColor.h"
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#include "include/core/SkColorSpace.h"
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#include "include/core/SkImageInfo.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPicture.h"
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#include "include/core/SkPictureRecorder.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkShader.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkSurface.h"
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#include "include/core/SkTileMode.h"
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#include "include/third_party/skcms/skcms.h"
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#include <utility>
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class PictureShaderCacheGM : public skiagm::GM {
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public:
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PictureShaderCacheGM(SkScalar tileSize)
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: fTileSize(tileSize) {
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}
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protected:
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void drawTile(SkCanvas* canvas) {
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SkPaint paint;
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paint.setColor(SK_ColorGREEN);
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paint.setStyle(SkPaint::kFill_Style);
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paint.setAntiAlias(true);
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canvas->drawCircle(fTileSize / 4, fTileSize / 4, fTileSize / 4, paint);
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canvas->drawRect(SkRect::MakeXYWH(fTileSize / 2, fTileSize / 2,
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fTileSize / 2, fTileSize / 2), paint);
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paint.setColor(SK_ColorRED);
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canvas->drawLine(fTileSize / 2, fTileSize * 1 / 3,
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fTileSize / 2, fTileSize * 2 / 3, paint);
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canvas->drawLine(fTileSize * 1 / 3, fTileSize / 2,
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fTileSize * 2 / 3, fTileSize / 2, paint);
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}
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void onOnceBeforeDraw() override {
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SkPictureRecorder recorder;
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SkCanvas* pictureCanvas = recorder.beginRecording(fTileSize, fTileSize);
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this->drawTile(pictureCanvas);
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fPicture = recorder.finishRecordingAsPicture();
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}
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SkString onShortName() override {
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return SkString("pictureshadercache");
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}
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SkISize onISize() override {
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return SkISize::Make(100, 100);
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}
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void onDraw(SkCanvas* canvas) override {
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SkPaint paint;
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paint.setShader(fPicture->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat,
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SkFilterMode::kNearest));
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{
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// Render in a funny color space that converts green to yellow.
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skcms_Matrix3x3 greenToYellow = {{
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{ 1, 1, 0 },
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{ 0, 1, 0 },
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{ 0, 0, 1 },
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}};
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sk_sp<SkColorSpace> gty = SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB,
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greenToYellow);
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SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100, std::move(gty));
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sk_sp<SkSurface> surface(SkSurface::MakeRaster(info));
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surface->getCanvas()->drawRect(SkRect::MakeWH(fTileSize, fTileSize), paint);
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}
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// When we draw to the canvas, we should see green because we should *not* reuse the
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// cached picture shader.
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canvas->drawRect(SkRect::MakeWH(fTileSize, fTileSize), paint);
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}
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private:
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SkScalar fTileSize;
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sk_sp<SkPicture> fPicture;
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SkBitmap fBitmap;
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using INHERITED = GM;
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};
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DEF_GM(return new PictureShaderCacheGM(100);)
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