3 * Copyright 2013 Google Inc.
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
11 #include "GrContext.h"
12 #include "GrContextFactory.h"
13 #include "GrProcessor.h"
14 #include "SkColorFilter.h"
18 static GrColor filterColor(const GrColor& color, uint32_t flags) {
20 if (flags & kR_GrColorComponentFlag) {
21 mask = 0xFF << GrColor_SHIFT_R;
23 if (flags & kG_GrColorComponentFlag) {
24 mask |= 0xFF << GrColor_SHIFT_G;
26 if (flags & kB_GrColorComponentFlag) {
27 mask |= 0xFF << GrColor_SHIFT_B;
29 if (flags & kA_GrColorComponentFlag) {
30 mask |= 0xFF << GrColor_SHIFT_A;
35 static void test_getConstantColorComponents(skiatest::Reporter* reporter, GrContext* grContext) {
36 struct GetConstantComponentTestCase {
38 uint32_t inputComponents; // "rgb of", "red of", "alpha of", ...
39 GrColor inputColor; // "[color]"
41 SkColor filterColor; // "with filter color [color]"
42 SkXfermode::Mode filterMode; // "in mode [mode]"
45 uint32_t outputComponents; // "rgb of", "red of", "alpha of", ...
46 GrColor outputColor; // "[color]"
51 kR = kR_GrColorComponentFlag,
52 kG = kG_GrColorComponentFlag,
53 kB = kB_GrColorComponentFlag,
54 kA = kA_GrColorComponentFlag,
55 kRGB = kRGB_GrColorComponentFlags,
56 kRGBA = kRGBA_GrColorComponentFlags
59 // Note: below, SkColors are non-premultiplied, where as GrColors are premultiplied.
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);
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);
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 },
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 },
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)},
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},
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) }
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<GrFragmentProcessor> effect(cf->asFragmentProcessor(grContext));
102 GrColor color = test.inputColor;
103 uint32_t components = test.inputComponents;
104 effect->getConstantColorComponents(&color, &components);
106 REPORTER_ASSERT(reporter, filterColor(color, components) == test.outputColor);
107 REPORTER_ASSERT(reporter, test.outputComponents == components);
111 DEF_GPUTEST(GpuColorFilter, reporter, factory) {
112 for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) {
113 GrContextFactory::GLContextType glType = static_cast<GrContextFactory::GLContextType>(type);
115 GrContext* grContext = factory->get(glType);
116 if (NULL == grContext) {
120 test_getConstantColorComponents(reporter, grContext);