| |
| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkColorFilter.h" |
| #include "Test.h" |
| |
| #if SK_SUPPORT_GPU |
| |
| #include "GrContext.h" |
| #include "GrContextFactory.h" |
| #include "GrFragmentProcessor.h" |
| #include "GrInvariantOutput.h" |
| #include "SkGr.h" |
| |
| 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 = GrColorPackA4(0); |
| const GrColor gr_white = GrColorPackA4(255); |
| const GrColor gr_whiteTrans = GrColorPackA4(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) } |
| }; |
| |
| GrPaint paint; |
| 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)); |
| SkTDArray<GrFragmentProcessor*> array; |
| bool hasFrag = cf->asFragmentProcessors(grContext, paint.getShaderDataManager(), &array); |
| REPORTER_ASSERT(reporter, hasFrag); |
| REPORTER_ASSERT(reporter, 1 == array.count()); |
| GrInvariantOutput inout(test.inputColor, |
| static_cast<GrColorComponentFlags>(test.inputComponents), |
| false); |
| array[0]->computeInvariantOutput(&inout); |
| |
| REPORTER_ASSERT(reporter, filterColor(inout.color(), inout.validFlags()) == test.outputColor); |
| REPORTER_ASSERT(reporter, test.outputComponents == inout.validFlags()); |
| array[0]->unref(); |
| } |
| } |
| |
| DEF_GPUTEST(GpuColorFilter, reporter, 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); |
| } |
| } |
| |
| #endif |