1 2 /* 3 * Copyright 2013 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 #if SK_SUPPORT_GPU 10 11 #include "GrContext.h" 12 #include "GrContextFactory.h" 13 #include "GrEffect.h" 14 #include "SkColorFilter.h" 15 #include "Test.h" 16 #include "SkGr.h" 17 18 namespace { 19 20 static GrColor filterColor(const GrColor& color, uint32_t flags) { 21 uint32_t mask = 0; 22 if (flags & kR_GrColorComponentFlag) { 23 mask = 0xFF << GrColor_SHIFT_R; 24 } 25 if (flags & kG_GrColorComponentFlag) { 26 mask |= 0xFF << GrColor_SHIFT_G; 27 } 28 if (flags & kB_GrColorComponentFlag) { 29 mask |= 0xFF << GrColor_SHIFT_B; 30 } 31 if (flags & kA_GrColorComponentFlag) { 32 mask |= 0xFF << GrColor_SHIFT_A; 33 } 34 return color & mask; 35 } 36 37 static void test_getConstantColorComponents(skiatest::Reporter* reporter, GrContext* grContext) { 38 struct GetConstantComponentTestCase { 39 // "Shape drawn with" 40 uint32_t inputComponents; // "rgb of", "red of", "alpha of", ... 41 GrColor inputColor; // "[color]" 42 43 SkColor filterColor; // "with filter color [color]" 44 SkXfermode::Mode filterMode; // "in mode [mode]" 45 46 // "produces" 47 uint32_t outputComponents; // "rgb of", "red of", "alpha of", ... 48 GrColor outputColor; // "[color]" 49 }; 50 51 // Shorthands. 52 enum { 53 kR = kR_GrColorComponentFlag, 54 kG = kG_GrColorComponentFlag, 55 kB = kB_GrColorComponentFlag, 56 kA = kA_GrColorComponentFlag, 57 kRGB = kRGB_GrColorComponentFlags, 58 kRGBA = kRGBA_GrColorComponentFlags 59 }; 60 61 // Note: below, SkColors are non-premultiplied, where as GrColors are premultiplied. 62 63 const SkColor c1 = SkColorSetARGB(200, 200, 200, 200); 64 const SkColor c2 = SkColorSetARGB(60, 60, 60, 60); 65 const GrColor gr_c1 = SkColor2GrColor(c1); 66 const GrColor gr_c2 = SkColor2GrColor(c2); 67 68 const GrColor gr_black = GrColorPackRGBA(0, 0, 0, 0); 69 const GrColor gr_white = GrColorPackRGBA(255, 255, 255, 255); 70 const GrColor gr_whiteTrans = GrColorPackRGBA(128, 128, 128, 128); 71 72 GetConstantComponentTestCase filterTests[] = { 73 // A color filtered with Clear produces black. 74 { kRGBA, gr_white, SK_ColorBLACK, SkXfermode::kClear_Mode, kRGBA, gr_black }, 75 { kRGBA, gr_c1, SK_ColorWHITE, SkXfermode::kClear_Mode, kRGBA, gr_black }, 76 { kR, gr_white, c1, SkXfermode::kClear_Mode, kRGBA, gr_black }, 77 78 // A color filtered with a color in mode Src, produces the filter color. 79 { kRGBA, gr_c2, c1, SkXfermode::kSrc_Mode, kRGBA, gr_c1 }, 80 { kA, gr_c1, c1, SkXfermode::kSrc_Mode, kRGBA, gr_c1 }, 81 82 // A color filtered with SrcOver produces a color. 83 { kRGBA, gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kRGBA, GrColorPackRGBA(164, 164, 164, 192)}, 84 // An unknown color with known alpha filtered with SrcOver produces an unknown color with known alpha. 85 { kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kA , GrColorPackRGBA(0, 0, 0, 192)}, 86 // A color with unknown alpha filtered with SrcOver produces a color with unknown alpha. 87 { kRGB , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kRGB, GrColorPackRGBA(164, 164, 164, 0)}, 88 89 // A color filtered with DstOver produces a color. 90 { kRGBA, gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, kRGBA, GrColorPackRGBA(178, 178, 178, 192)}, 91 // An unknown color with known alpha filtered with DstOver produces an unknown color with known alpha. 92 { kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, kA , GrColorPackRGBA(0, 0, 0, 192)}, 93 // A color with unknown alpha filtered with DstOver produces an unknown color. 94 { kRGB , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, 0 , gr_black}, 95 96 // An unknown color with known alpha and red component filtered with Multiply produces an unknown color with known red and alpha. 97 { kR|kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kModulate_Mode, kR|kA, GrColorPackRGBA(50, 0, 0, 64) } 98 }; 99 100 for (size_t i = 0; i < SK_ARRAY_COUNT(filterTests); ++i) { 101 const GetConstantComponentTestCase& test = filterTests[i]; 102 SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(test.filterColor, test.filterMode)); 103 SkAutoTUnref<GrEffectRef> grEffect(cf->asNewEffect(grContext)); 104 GrColor color = test.inputColor; 105 uint32_t components = test.inputComponents; 106 grEffect->get()->getConstantColorComponents(&color, &components); 107 108 REPORTER_ASSERT(reporter, filterColor(color, components) == test.outputColor); 109 REPORTER_ASSERT(reporter, test.outputComponents == components); 110 } 111 } 112 113 static void TestGpuColorFilter(skiatest::Reporter* reporter, GrContextFactory* factory) { 114 for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) { 115 GrContextFactory::GLContextType glType = static_cast<GrContextFactory::GLContextType>(type); 116 117 GrContext* grContext = factory->get(glType); 118 if (NULL == grContext) { 119 continue; 120 } 121 122 test_getConstantColorComponents(reporter, grContext); 123 } 124 } 125 126 } 127 128 #include "TestClassDef.h" 129 DEFINE_GPUTESTCLASS("GpuColorFilter", TestGpuColorFilterClass, TestGpuColorFilter) 130 131 #endif 132
