| /* |
| * Copyright 2015 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/SkColor.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPoint.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/SkSurface.h" |
| #include "include/core/SkTileMode.h" |
| #include "include/core/SkTypes.h" |
| #include "include/effects/SkGradientShader.h" |
| #include "src/base/SkMathPriv.h" |
| #include "src/base/SkRandom.h" |
| #include "tools/ToolUtils.h" |
| |
| static sk_sp<SkImage> makebm(int w, int h) { |
| SkImageInfo info = SkImageInfo::MakeN32Premul(w, h); |
| auto surface(SkSurfaces::Raster(info)); |
| SkCanvas* canvas = surface->getCanvas(); |
| |
| const SkScalar wScalar = SkIntToScalar(w); |
| const SkScalar hScalar = SkIntToScalar(h); |
| |
| const SkPoint pt = { wScalar / 2, hScalar / 2 }; |
| |
| const SkScalar radius = 4 * std::max(wScalar, hScalar); |
| |
| constexpr SkColor colors[] = { SK_ColorRED, SK_ColorYELLOW, |
| SK_ColorGREEN, SK_ColorMAGENTA, |
| SK_ColorBLUE, SK_ColorCYAN, |
| SK_ColorRED}; |
| |
| constexpr SkScalar pos[] = {0, |
| SK_Scalar1 / 6, |
| 2 * SK_Scalar1 / 6, |
| 3 * SK_Scalar1 / 6, |
| 4 * SK_Scalar1 / 6, |
| 5 * SK_Scalar1 / 6, |
| SK_Scalar1}; |
| |
| SkASSERT(std::size(colors) == std::size(pos)); |
| SkPaint paint; |
| SkRect rect = SkRect::MakeWH(wScalar, hScalar); |
| SkMatrix mat = SkMatrix::I(); |
| for (int i = 0; i < 4; ++i) { |
| paint.setShader(SkGradientShader::MakeRadial( |
| pt, radius, |
| colors, pos, |
| std::size(colors), |
| SkTileMode::kRepeat, |
| 0, &mat)); |
| canvas->drawRect(rect, paint); |
| rect.inset(wScalar / 8, hScalar / 8); |
| mat.postScale(SK_Scalar1 / 4, SK_Scalar1 / 4); |
| } |
| return surface->makeImageSnapshot(); |
| } |
| |
| constexpr int gSize = 1024; |
| constexpr int gSurfaceSize = 2048; |
| |
| // This GM calls drawImageRect several times using the same texture. This is intended to exercise |
| // combining GrDrawOps during these calls. |
| class DrawMiniBitmapRectGM : public skiagm::GM { |
| public: |
| DrawMiniBitmapRectGM(bool antiAlias) : fAA(antiAlias) { |
| fName.set("drawminibitmaprect"); |
| if (fAA) { |
| fName.appendf("_aa"); |
| } |
| } |
| |
| protected: |
| SkString onShortName() override { return fName; } |
| |
| SkISize onISize() override { return SkISize::Make(gSize, gSize); } |
| |
| void onDraw(SkCanvas* canvas) override { |
| if (nullptr == fImage) { |
| fImage = ToolUtils::MakeTextureImage(canvas, makebm(gSurfaceSize, gSurfaceSize)); |
| } |
| |
| const SkRect dstRect = { 0, 0, SkIntToScalar(64), SkIntToScalar(64)}; |
| const int kMaxSrcRectSize = 1 << (SkNextLog2(gSurfaceSize) + 2); |
| |
| constexpr int kPadX = 30; |
| constexpr int kPadY = 40; |
| |
| int rowCount = 0; |
| canvas->translate(SkIntToScalar(kPadX), SkIntToScalar(kPadY)); |
| canvas->save(); |
| SkRandom random; |
| |
| SkPaint paint; |
| paint.setAntiAlias(fAA); |
| for (int w = 1; w <= kMaxSrcRectSize; w *= 3) { |
| for (int h = 1; h <= kMaxSrcRectSize; h *= 3) { |
| |
| const SkIRect srcRect = |
| SkIRect::MakeXYWH((gSurfaceSize - w) / 2, (gSurfaceSize - h) / 2, w, h); |
| canvas->save(); |
| switch (random.nextU() % 3) { |
| case 0: |
| canvas->rotate(random.nextF() * 10.f); |
| break; |
| case 1: |
| canvas->rotate(-random.nextF() * 10.f); |
| break; |
| case 2: |
| // rect stays rect |
| break; |
| } |
| canvas->drawImageRect(fImage.get(), SkRect::Make(srcRect), dstRect, |
| SkSamplingOptions(), &paint, |
| SkCanvas::kFast_SrcRectConstraint); |
| canvas->restore(); |
| |
| canvas->translate(dstRect.width() + SK_Scalar1 * kPadX, 0); |
| ++rowCount; |
| if ((dstRect.width() + 2 * kPadX) * rowCount > gSize) { |
| canvas->restore(); |
| canvas->translate(0, dstRect.height() + SK_Scalar1 * kPadY); |
| canvas->save(); |
| rowCount = 0; |
| } |
| } |
| } |
| canvas->restore(); |
| } |
| |
| private: |
| bool fAA; |
| sk_sp<SkImage> fImage; |
| SkString fName; |
| |
| using INHERITED = skiagm::GM; |
| }; |
| |
| DEF_GM( return new DrawMiniBitmapRectGM(true); ) |
| DEF_GM( return new DrawMiniBitmapRectGM(false); ) |