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| 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, GrCont
ext* 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 premul
tiplied. |
| 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_bla
ck }, |
| 75 { kRGBA, gr_c1, SK_ColorWHITE, SkXfermode::kClear_Mode, kRGBA, gr_bla
ck }, |
| 76 { kR, gr_white, c1, SkXfermode::kClear_Mode, kRGBA, gr_bla
ck }, |
| 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 u
nknown 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 wit
h 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 u
nknown 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 Mul
tiply 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.filt
erColor, 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.outputC
olor); |
| 109 REPORTER_ASSERT(reporter, test.outputComponents == components); |
| 110 } |
| 111 } |
| 112 |
| 113 static void TestGpuColorFilter(skiatest::Reporter* reporter, GrContextFactory* f
actory) { |
| 114 for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) { |
| 115 GrContextFactory::GLContextType glType = static_cast<GrContextFactory::G
LContextType>(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, TestGpuColorFilte
r) |
| 130 |
| 131 #endif |
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