1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "gm/gm.h" 9 #include "include/core/SkBlendMode.h" 10 #include "include/core/SkCanvas.h" 11 #include "include/core/SkColor.h" 12 #include "include/core/SkMatrix.h" 13 #include "include/core/SkPaint.h" 14 #include "include/core/SkRRect.h" 15 #include "include/core/SkRect.h" 16 #include "include/core/SkScalar.h" 17 #include "include/core/SkSize.h" 18 #include "include/core/SkString.h" 19 #include "include/core/SkTypes.h" 20 #include "include/private/GrSharedEnums.h" 21 #include "include/private/GrTypesPriv.h" 22 #include "src/gpu/GrCaps.h" 23 #include "src/gpu/GrFragmentProcessor.h" 24 #include "src/gpu/GrPaint.h" 25 #include "src/gpu/GrSurfaceDrawContext.h" 26 #include "src/gpu/effects/GrPorterDuffXferProcessor.h" 27 #include "src/gpu/effects/GrRRectEffect.h" 28 #include "src/gpu/ops/GrDrawOp.h" 29 #include "src/gpu/ops/GrFillRectOp.h" 30 #include "tools/ToolUtils.h" 31 32 #include <memory> 33 #include <utility> 34 35 namespace skiagm { 36 37 /////////////////////////////////////////////////////////////////////////////// 38 39 class BigRRectAAEffectGM : public GpuGM { 40 public: BigRRectAAEffectGM(const SkRRect & rrect,const char * name)41 BigRRectAAEffectGM(const SkRRect& rrect, const char* name) 42 : fRRect(rrect) 43 , fName(name) { 44 this->setBGColor(ToolUtils::color_to_565(SK_ColorBLUE)); 45 // Each test case draws the rrect with gaps around it. 46 fTestWidth = SkScalarCeilToInt(rrect.width()) + 2 * kGap; 47 fTestHeight = SkScalarCeilToInt(rrect.height()) + 2 * kGap; 48 49 // Add a pad between test cases. 50 fTestOffsetX = fTestWidth + kPad; 51 fTestOffsetY = fTestHeight + kPad; 52 53 // We draw two tests in x (fill and inv-fill) and pad around 54 // all four sides of the image. 55 fWidth = 2 * fTestOffsetX + kPad; 56 fHeight = fTestOffsetY + kPad; 57 } 58 59 protected: onShortName()60 SkString onShortName() override { 61 SkString name; 62 name.printf("big_rrect_%s_aa_effect", fName); 63 return name; 64 } 65 onISize()66 SkISize onISize() override { return SkISize::Make(fWidth, fHeight); } 67 onDraw(GrRecordingContext * context,GrSurfaceDrawContext * surfaceDrawContext,SkCanvas * canvas)68 void onDraw(GrRecordingContext* context, GrSurfaceDrawContext* surfaceDrawContext, 69 SkCanvas* canvas) override { 70 SkPaint paint; 71 72 int y = kPad; 73 int x = kPad; 74 constexpr GrClipEdgeType kEdgeTypes[] = { 75 GrClipEdgeType::kFillAA, 76 GrClipEdgeType::kInverseFillAA, 77 }; 78 SkRect testBounds = SkRect::MakeIWH(fTestWidth, fTestHeight); 79 for (size_t et = 0; et < SK_ARRAY_COUNT(kEdgeTypes); ++et) { 80 GrClipEdgeType edgeType = kEdgeTypes[et]; 81 canvas->save(); 82 canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); 83 84 // Draw a background for the test case 85 SkPaint paint; 86 paint.setColor(SK_ColorWHITE); 87 canvas->drawRect(testBounds, paint); 88 89 SkRRect rrect = fRRect; 90 rrect.offset(SkIntToScalar(x + kGap), SkIntToScalar(y + kGap)); 91 const auto& caps = *surfaceDrawContext->caps()->shaderCaps(); 92 auto [success, fp] = GrRRectEffect::Make(/*inputFP=*/nullptr, edgeType, rrect, 93 caps); 94 SkASSERT(success); 95 if (success) { 96 SkASSERT(fp); 97 GrPaint grPaint; 98 grPaint.setColor4f({ 0, 0, 0, 1.f }); 99 grPaint.setXPFactory(GrPorterDuffXPFactory::Get(SkBlendMode::kSrc)); 100 grPaint.setCoverageFragmentProcessor(std::move(fp)); 101 102 SkRect bounds = testBounds; 103 bounds.offset(SkIntToScalar(x), SkIntToScalar(y)); 104 105 surfaceDrawContext->addDrawOp(GrFillRectOp::MakeNonAARect( 106 context, std::move(grPaint), SkMatrix::I(), bounds)); 107 } 108 canvas->restore(); 109 x = x + fTestOffsetX; 110 } 111 } 112 113 private: 114 // pad between test cases 115 static constexpr int kPad = 7; 116 // gap between rect for each case that is rendered and exterior of rrect 117 static constexpr int kGap = 3; 118 119 SkRRect fRRect; 120 int fWidth; 121 int fHeight; 122 int fTestWidth; 123 int fTestHeight; 124 int fTestOffsetX; 125 int fTestOffsetY; 126 const char* fName; 127 using INHERITED = GM; 128 }; 129 130 /////////////////////////////////////////////////////////////////////////////// 131 // This value is motivated by bug chromium:477684. It has to be large to cause overflow in 132 // the shader 133 constexpr int kSize = 700; 134 135 DEF_GM( return new BigRRectAAEffectGM (SkRRect::MakeRect(SkRect::MakeIWH(kSize, kSize)), "rect"); ) 136 DEF_GM( return new BigRRectAAEffectGM (SkRRect::MakeOval(SkRect::MakeIWH(kSize, kSize)), "circle"); ) 137 DEF_GM( return new BigRRectAAEffectGM (SkRRect::MakeOval(SkRect::MakeIWH(kSize - 1, kSize - 10)), "ellipse"); ) 138 // The next two have small linear segments between the corners 139 DEF_GM( return new BigRRectAAEffectGM (SkRRect::MakeRectXY(SkRect::MakeIWH(kSize - 1, kSize - 10), kSize/2.f - 10.f, kSize/2.f - 10.f), "circular_corner"); ) 140 DEF_GM( return new BigRRectAAEffectGM (SkRRect::MakeRectXY(SkRect::MakeIWH(kSize - 1, kSize - 10), kSize/2.f - 10.f, kSize/2.f - 15.f), "elliptical_corner"); ) 141 142 } // namespace skiagm 143