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| 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: |
| 28 TextureDomainEffect() { |
| 29 this->setBGColor(0xFFFFFFFF); |
| 30 } |
| 31 |
| 32 protected: |
| 33 virtual SkString onShortName() SK_OVERRIDE { |
| 34 return SkString("texture_domain_effect"); |
| 35 } |
| 36 |
| 37 virtual SkISize onISize() SK_OVERRIDE { |
| 38 return make_isize(400, 800); |
| 39 } |
| 40 |
| 41 virtual uint32_t onGetFlags() const SK_OVERRIDE { |
| 42 // This is a GPU-specific GM. |
| 43 return kGPUOnly_Flag; |
| 44 } |
| 45 |
| 46 virtual void onOnceBeforeDraw() SK_OVERRIDE { |
| 47 fBmp.allocN32Pixels(100, 100); |
| 48 SkCanvas canvas(fBmp); |
| 49 SkPaint paint; |
| 50 |
| 51 SkColor colors1[] = { SK_ColorCYAN, SK_ColorLTGRAY, SK_ColorGRAY }; |
| 52 paint.setShader(SkGradientShader::CreateSweep(65.f, 75.f, colors1, |
| 53 NULL, SK_ARRAY_COUNT(color
s1)))->unref(); |
| 54 canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, |
| 55 fBmp.width() + 10.f, fBmp.height() + 10
.f), paint); |
| 56 |
| 57 SkColor colors2[] = { SK_ColorMAGENTA, SK_ColorLTGRAY, SK_ColorYELLOW }; |
| 58 paint.setShader(SkGradientShader::CreateSweep(45.f, 55.f, colors2, NULL, |
| 59 SK_ARRAY_COUNT(colors2)))-
>unref(); |
| 60 paint.setXfermodeMode(SkXfermode::kDarken_Mode); |
| 61 canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, |
| 62 fBmp.width() + 10.f, fBmp.height() + 10
.f), paint); |
| 63 |
| 64 SkColor colors3[] = { SK_ColorBLUE, SK_ColorLTGRAY, SK_ColorGREEN }; |
| 65 paint.setShader(SkGradientShader::CreateSweep(25.f, 35.f, colors3, NULL, |
| 66 SK_ARRAY_COUNT(colors3)))-
>unref(); |
| 67 paint.setXfermodeMode(SkXfermode::kLighten_Mode); |
| 68 canvas.drawOval(SkRect::MakeXYWH(-5.f, -5.f, |
| 69 fBmp.width() + 10.f, fBmp.height() + 10
.f), paint); |
| 70 } |
| 71 |
| 72 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| 73 GrRenderTarget* rt = canvas->internal_private_accessTopLayerRenderTarget
(); |
| 74 if (NULL == rt) { |
| 75 return; |
| 76 } |
| 77 GrContext* context = rt->getContext(); |
| 78 if (NULL == context) { |
| 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 GrDrawState* drawState = tt.target()->drawState(); |
| 90 |
| 91 GrTexture* texture = GrLockAndRefCachedBitmapTexture(context, fBmp, NULL
); |
| 92 if (NULL == texture) { |
| 93 return; |
| 94 } |
| 95 |
| 96 static const SkScalar kDrawPad = 10.f; |
| 97 static const SkScalar kTestPad = 10.f; |
| 98 |
| 99 SkTArray<SkMatrix> textureMatrices; |
| 100 textureMatrices.push_back().setIDiv(texture->width(), texture->height())
; |
| 101 textureMatrices.push_back() = textureMatrices[0]; |
| 102 textureMatrices.back().postScale(1.5f, 0.85f); |
| 103 textureMatrices.push_back() = textureMatrices[0]; |
| 104 textureMatrices.back().preRotate(45.f, texture->width() / 2.f, texture->
height() / 2.f); |
| 105 |
| 106 const SkIRect texelDomains[] = { |
| 107 SkIRect::MakeWH(fBmp.width(), fBmp.height()), |
| 108 SkIRect::MakeXYWH(fBmp.width() / 4, |
| 109 fBmp.height() / 4, |
| 110 fBmp.width() / 2, |
| 111 fBmp.height() / 2), |
| 112 }; |
| 113 |
| 114 SkRect renderRect = SkRect::MakeWH(SkIntToScalar(fBmp.width()), |
| 115 SkIntToScalar(fBmp.height())); |
| 116 renderRect.outset(kDrawPad, kDrawPad); |
| 117 |
| 118 SkScalar y = kDrawPad + kTestPad; |
| 119 for (int tm = 0; tm < textureMatrices.count(); ++tm) { |
| 120 for (size_t d = 0; d < SK_ARRAY_COUNT(texelDomains); ++d) { |
| 121 SkScalar x = kDrawPad + kTestPad; |
| 122 for (int m = 0; m < GrTextureDomain::kModeCount; ++m) { |
| 123 GrTextureDomain::Mode mode = (GrTextureDomain::Mode) m; |
| 124 SkAutoTUnref<GrEffectRef> effect( |
| 125 GrTextureDomainEffect::Create(texture, textureMatrices[t
m], |
| 126 GrTextureDomain::MakeTexelDomain
(texture, |
| 127
texelDomains[d]), |
| 128 mode, GrTextureParams::kNone_Fil
terMode)); |
| 129 |
| 130 if (!effect) { |
| 131 continue; |
| 132 } |
| 133 SkMatrix viewMatrix; |
| 134 viewMatrix.setTranslate(x, y); |
| 135 drawState->reset(viewMatrix); |
| 136 drawState->setRenderTarget(rt); |
| 137 drawState->setColor(0xffffffff); |
| 138 drawState->addColorEffect(effect, 1); |
| 139 |
| 140 tt.target()->drawSimpleRect(renderRect); |
| 141 x += renderRect.width() + kTestPad; |
| 142 } |
| 143 y += renderRect.height() + kTestPad; |
| 144 } |
| 145 } |
| 146 GrUnlockAndUnrefCachedBitmapTexture(texture); |
| 147 } |
| 148 |
| 149 private: |
| 150 SkBitmap fBmp; |
| 151 |
| 152 typedef GM INHERITED; |
| 153 }; |
| 154 |
| 155 DEF_GM( return SkNEW(TextureDomainEffect); ) |
| 156 } |
| 157 |
| 158 #endif |
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