1 2 /* 3 * Copyright 2014 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 // This test only works with the GPU backend. 10 11 #include "gm.h" 12 13 #if SK_SUPPORT_GPU 14 15 #include "GrContext.h" 16 #include "GrTest.h" 17 #include "effects/GrTextureDomain.h" 18 #include "SkBitmap.h" 19 #include "SkGr.h" 20 #include "SkGradientShader.h" 21 22 namespace skiagm { 23 /** 24 * This GM directly exercises GrTextureDomainEffect. 25 */ 26 class TextureDomainEffect : public GM { 27 public: TextureDomainEffect()28 TextureDomainEffect() { 29 this->setBGColor(0xFFFFFFFF); 30 } 31 32 protected: onShortName()33 SkString onShortName() override { 34 return SkString("texture_domain_effect"); 35 } 36 onISize()37 SkISize onISize() override { 38 const SkScalar canvasWidth = kDrawPad + 39 (kTargetWidth + 2 * kDrawPad) * GrTextureDomain::kModeCount + 40 kTestPad * GrTextureDomain::kModeCount; 41 return SkISize::Make(SkScalarCeilToInt(canvasWidth), 800); 42 } 43 onOnceBeforeDraw()44 void onOnceBeforeDraw() override { 45 fBmp.allocN32Pixels(kTargetWidth, kTargetHeight); 46 SkCanvas canvas(fBmp); 47 canvas.clear(0x00000000); 48 SkPaint paint; 49 50 SkColor colors1[] = { SK_ColorCYAN, SK_ColorLTGRAY, SK_ColorGRAY }; 51 paint.setShader(SkGradientShader::CreateSweep(65.f, 75.f, colors1, 52 NULL, SK_ARRAY_COUNT(colors1)))->unref(); 53 canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, 54 fBmp.width() + 10.f, fBmp.height() + 10.f), paint); 55 56 SkColor colors2[] = { SK_ColorMAGENTA, SK_ColorLTGRAY, SK_ColorYELLOW }; 57 paint.setShader(SkGradientShader::CreateSweep(45.f, 55.f, colors2, NULL, 58 SK_ARRAY_COUNT(colors2)))->unref(); 59 paint.setXfermodeMode(SkXfermode::kDarken_Mode); 60 canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, 61 fBmp.width() + 10.f, fBmp.height() + 10.f), paint); 62 63 SkColor colors3[] = { SK_ColorBLUE, SK_ColorLTGRAY, SK_ColorGREEN }; 64 paint.setShader(SkGradientShader::CreateSweep(25.f, 35.f, colors3, NULL, 65 SK_ARRAY_COUNT(colors3)))->unref(); 66 paint.setXfermodeMode(SkXfermode::kLighten_Mode); 67 canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, 68 fBmp.width() + 10.f, fBmp.height() + 10.f), paint); 69 } 70 onDraw(SkCanvas * canvas)71 void onDraw(SkCanvas* canvas) override { 72 GrRenderTarget* rt = canvas->internal_private_accessTopLayerRenderTarget(); 73 if (NULL == rt) { 74 return; 75 } 76 GrContext* context = rt->getContext(); 77 if (NULL == context) { 78 this->drawGpuOnlyMessage(canvas); 79 return; 80 } 81 82 GrTestTarget tt; 83 context->getTestTarget(&tt); 84 if (NULL == tt.target()) { 85 SkDEBUGFAIL("Couldn't get Gr test target."); 86 return; 87 } 88 89 SkAutoTUnref<GrTexture> texture(GrRefCachedBitmapTexture(context, fBmp, NULL)); 90 if (!texture) { 91 return; 92 } 93 94 SkTArray<SkMatrix> textureMatrices; 95 textureMatrices.push_back().setIDiv(texture->width(), texture->height()); 96 textureMatrices.push_back() = textureMatrices[0]; 97 textureMatrices.back().postScale(1.5f, 0.85f); 98 textureMatrices.push_back() = textureMatrices[0]; 99 textureMatrices.back().preRotate(45.f, texture->width() / 2.f, texture->height() / 2.f); 100 101 const SkIRect texelDomains[] = { 102 fBmp.bounds(), 103 SkIRect::MakeXYWH(fBmp.width() / 4, 104 fBmp.height() / 4, 105 fBmp.width() / 2, 106 fBmp.height() / 2), 107 }; 108 109 SkRect renderRect = SkRect::Make(fBmp.bounds()); 110 renderRect.outset(kDrawPad, kDrawPad); 111 112 SkScalar y = kDrawPad + kTestPad; 113 for (int tm = 0; tm < textureMatrices.count(); ++tm) { 114 for (size_t d = 0; d < SK_ARRAY_COUNT(texelDomains); ++d) { 115 SkScalar x = kDrawPad + kTestPad; 116 for (int m = 0; m < GrTextureDomain::kModeCount; ++m) { 117 GrTextureDomain::Mode mode = (GrTextureDomain::Mode) m; 118 SkAutoTUnref<GrFragmentProcessor> fp( 119 GrTextureDomainEffect::Create(texture, textureMatrices[tm], 120 GrTextureDomain::MakeTexelDomain(texture, 121 texelDomains[d]), 122 mode, GrTextureParams::kNone_FilterMode)); 123 124 if (!fp) { 125 continue; 126 } 127 const SkMatrix viewMatrix = SkMatrix::MakeTrans(x, y); 128 GrPipelineBuilder pipelineBuilder; 129 pipelineBuilder.setRenderTarget(rt); 130 pipelineBuilder.addColorProcessor(fp); 131 132 tt.target()->drawSimpleRect(&pipelineBuilder, 133 GrColor_WHITE, 134 viewMatrix, 135 renderRect); 136 x += renderRect.width() + kTestPad; 137 } 138 y += renderRect.height() + kTestPad; 139 } 140 } 141 } 142 143 private: 144 static const SkScalar kDrawPad; 145 static const SkScalar kTestPad; 146 static const int kTargetWidth = 100; 147 static const int kTargetHeight = 100; 148 SkBitmap fBmp; 149 150 typedef GM INHERITED; 151 }; 152 153 // Windows builds did not like SkScalar initialization in class :( 154 const SkScalar TextureDomainEffect::kDrawPad = 10.f; 155 const SkScalar TextureDomainEffect::kTestPad = 10.f; 156 157 DEF_GM( return SkNEW(TextureDomainEffect); ) 158 } 159 160 #endif 161