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