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Diffstat (limited to 'tests/GpuColorFilterTest.cpp')
-rw-r--r-- | tests/GpuColorFilterTest.cpp | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/tests/GpuColorFilterTest.cpp b/tests/GpuColorFilterTest.cpp new file mode 100644 index 0000000000..9fb1c770e1 --- /dev/null +++ b/tests/GpuColorFilterTest.cpp @@ -0,0 +1,131 @@ + +/* + * Copyright 2013 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#if SK_SUPPORT_GPU + +#include "GrContext.h" +#include "GrContextFactory.h" +#include "GrEffect.h" +#include "SkColorFilter.h" +#include "Test.h" +#include "SkGr.h" + +namespace { + +static GrColor filterColor(const GrColor& color, uint32_t flags) { + uint32_t mask = 0; + if (flags & kR_GrColorComponentFlag) { + mask = 0xFF << GrColor_SHIFT_R; + } + if (flags & kG_GrColorComponentFlag) { + mask |= 0xFF << GrColor_SHIFT_G; + } + if (flags & kB_GrColorComponentFlag) { + mask |= 0xFF << GrColor_SHIFT_B; + } + if (flags & kA_GrColorComponentFlag) { + mask |= 0xFF << GrColor_SHIFT_A; + } + return color & mask; +} + +static void test_getConstantColorComponents(skiatest::Reporter* reporter, GrContext* grContext) { + struct GetConstantComponentTestCase { + // "Shape drawn with" + uint32_t inputComponents; // "rgb of", "red of", "alpha of", ... + GrColor inputColor; // "[color]" + + SkColor filterColor; // "with filter color [color]" + SkXfermode::Mode filterMode; // "in mode [mode]" + + // "produces" + uint32_t outputComponents; // "rgb of", "red of", "alpha of", ... + GrColor outputColor; // "[color]" + }; + + // Shorthands. + enum { + kR = kR_GrColorComponentFlag, + kG = kG_GrColorComponentFlag, + kB = kB_GrColorComponentFlag, + kA = kA_GrColorComponentFlag, + kRGB = kRGB_GrColorComponentFlags, + kRGBA = kRGBA_GrColorComponentFlags + }; + + // Note: below, SkColors are non-premultiplied, where as GrColors are premultiplied. + + const SkColor c1 = SkColorSetARGB(200, 200, 200, 200); + const SkColor c2 = SkColorSetARGB(60, 60, 60, 60); + const GrColor gr_c1 = SkColor2GrColor(c1); + const GrColor gr_c2 = SkColor2GrColor(c2); + + const GrColor gr_black = GrColorPackRGBA(0, 0, 0, 0); + const GrColor gr_white = GrColorPackRGBA(255, 255, 255, 255); + const GrColor gr_whiteTrans = GrColorPackRGBA(128, 128, 128, 128); + + GetConstantComponentTestCase filterTests[] = { + // A color filtered with Clear produces black. + { kRGBA, gr_white, SK_ColorBLACK, SkXfermode::kClear_Mode, kRGBA, gr_black }, + { kRGBA, gr_c1, SK_ColorWHITE, SkXfermode::kClear_Mode, kRGBA, gr_black }, + { kR, gr_white, c1, SkXfermode::kClear_Mode, kRGBA, gr_black }, + + // A color filtered with a color in mode Src, produces the filter color. + { kRGBA, gr_c2, c1, SkXfermode::kSrc_Mode, kRGBA, gr_c1 }, + { kA, gr_c1, c1, SkXfermode::kSrc_Mode, kRGBA, gr_c1 }, + + // A color filtered with SrcOver produces a color. + { kRGBA, gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kRGBA, GrColorPackRGBA(164, 164, 164, 192)}, + // An unknown color with known alpha filtered with SrcOver produces an unknown color with known alpha. + { kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kA , GrColorPackRGBA(0, 0, 0, 192)}, + // A color with unknown alpha filtered with SrcOver produces a color with unknown alpha. + { kRGB , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kSrcOver_Mode, kRGB, GrColorPackRGBA(164, 164, 164, 0)}, + + // A color filtered with DstOver produces a color. + { kRGBA, gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, kRGBA, GrColorPackRGBA(178, 178, 178, 192)}, + // An unknown color with known alpha filtered with DstOver produces an unknown color with known alpha. + { kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, kA , GrColorPackRGBA(0, 0, 0, 192)}, + // A color with unknown alpha filtered with DstOver produces an unknown color. + { kRGB , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kDstOver_Mode, 0 , gr_black}, + + // An unknown color with known alpha and red component filtered with Multiply produces an unknown color with known red and alpha. + { kR|kA , gr_whiteTrans, SkColorSetARGB(128, 200, 200, 200), SkXfermode::kModulate_Mode, kR|kA, GrColorPackRGBA(50, 0, 0, 64) } + }; + + for (size_t i = 0; i < SK_ARRAY_COUNT(filterTests); ++i) { + const GetConstantComponentTestCase& test = filterTests[i]; + SkAutoTUnref<SkColorFilter> cf(SkColorFilter::CreateModeFilter(test.filterColor, test.filterMode)); + SkAutoTUnref<GrEffectRef> grEffect(cf->asNewEffect(grContext)); + GrColor color = test.inputColor; + uint32_t components = test.inputComponents; + grEffect->get()->getConstantColorComponents(&color, &components); + + REPORTER_ASSERT(reporter, filterColor(color, components) == test.outputColor); + REPORTER_ASSERT(reporter, test.outputComponents == components); + } +} + +static void TestGpuColorFilter(skiatest::Reporter* reporter, GrContextFactory* factory) { + for (int type = 0; type < GrContextFactory::kLastGLContextType; ++type) { + GrContextFactory::GLContextType glType = static_cast<GrContextFactory::GLContextType>(type); + + GrContext* grContext = factory->get(glType); + if (NULL == grContext) { + continue; + } + + test_getConstantColorComponents(reporter, grContext); + } +} + +} + +#include "TestClassDef.h" +DEFINE_GPUTESTCLASS("GpuColorFilter", TestGpuColorFilterClass, TestGpuColorFilter) + +#endif |