| /* |
| * Copyright 2012 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/SkBlurTypes.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkFont.h" |
| #include "include/core/SkMaskFilter.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPath.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkShader.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTileMode.h" |
| #include "include/core/SkTypeface.h" |
| #include "tools/ToolUtils.h" |
| #include "tools/fonts/FontToolUtils.h" |
| |
| namespace skiagm { |
| |
| /** |
| * Stress test the GPU samplers by rendering a textured glyph with a mask and |
| * an AA clip |
| */ |
| class SamplerStressGM : public GM { |
| public: |
| SamplerStressGM() |
| : fTextureCreated(false) |
| , fMaskFilter(nullptr) { |
| } |
| |
| protected: |
| SkString getName() const override { return SkString("gpusamplerstress"); } |
| |
| SkISize getISize() override { return SkISize::Make(640, 480); } |
| |
| /** |
| * Create a red & green stripes on black texture |
| */ |
| void createTexture() { |
| if (fTextureCreated) { |
| return; |
| } |
| |
| constexpr int xSize = 16; |
| constexpr int ySize = 16; |
| |
| fTexture.allocN32Pixels(xSize, ySize); |
| SkPMColor* addr = fTexture.getAddr32(0, 0); |
| |
| for (int y = 0; y < ySize; ++y) { |
| for (int x = 0; x < xSize; ++x) { |
| addr[y*xSize+x] = SkPreMultiplyColor(SK_ColorBLACK); |
| |
| if ((y % 5) == 0) { |
| addr[y*xSize+x] = SkPreMultiplyColor(SK_ColorRED); |
| } |
| if ((x % 7) == 0) { |
| addr[y*xSize+x] = SkPreMultiplyColor(SK_ColorGREEN); |
| } |
| } |
| } |
| |
| fTextureCreated = true; |
| } |
| |
| void createShader() { |
| if (fShader) { |
| return; |
| } |
| |
| createTexture(); |
| |
| fShader = fTexture.makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, |
| SkSamplingOptions()); |
| } |
| |
| void createMaskFilter() { |
| if (fMaskFilter) { |
| return; |
| } |
| |
| const SkScalar sigma = 1; |
| fMaskFilter = SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, sigma); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| createShader(); |
| createMaskFilter(); |
| |
| canvas->save(); |
| |
| // draw a letter "M" with a green & red striped texture and a |
| // stipple mask with a round rect soft clip |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setShader(fShader); |
| paint.setMaskFilter(fMaskFilter); |
| SkFont font(ToolUtils::DefaultPortableTypeface(), 72); |
| |
| SkRect temp; |
| temp.setLTRB(115, 75, 144, 110); |
| |
| SkPath path; |
| path.addRoundRect(temp, SkIntToScalar(5), SkIntToScalar(5)); |
| |
| canvas->clipPath(path, true); // AA is on |
| |
| canvas->drawString("M", 100.0f, 100.0f, font, paint); |
| |
| canvas->restore(); |
| |
| // Now draw stroked versions of the "M" and the round rect so we can |
| // see what is going on |
| SkPaint paint2; |
| paint2.setColor(SK_ColorBLACK); |
| paint2.setAntiAlias(true); |
| paint2.setStyle(SkPaint::kStroke_Style); |
| paint2.setStrokeWidth(1); |
| canvas->drawString("M", 100.0f, 100.0f, font, paint2); |
| |
| paint2.setColor(SK_ColorGRAY); |
| |
| canvas->drawPath(path, paint2); |
| } |
| |
| private: |
| SkBitmap fTexture; |
| bool fTextureCreated; |
| sk_sp<SkShader> fShader; |
| sk_sp<SkMaskFilter> fMaskFilter; |
| |
| using INHERITED = GM; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM( return new SamplerStressGM; ) |
| |
| } // namespace skiagm |