skia2/tests/GrPorterDuffTest.cpp

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Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkXfermode.h"
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrBatch.h"
#include "GrContextFactory.h"
#include "GrContextOptions.h"
#include "GrGpu.h"
#include "GrResourceProvider.h"
#include "GrXferProcessor.h"
#include "effects/GrPorterDuffXferProcessor.h"
#include "gl/GrGLCaps.h"
////////////////////////////////////////////////////////////////////////////////
static void test_color_unknown_with_coverage(skiatest::Reporter* reporter, const GrCaps& caps);
static void test_color_unknown_no_coverage(skiatest::Reporter* reporter, const GrCaps& caps);
static void test_color_opaque_with_coverage(skiatest::Reporter* reporter, const GrCaps& caps);
static void test_color_opaque_no_coverage(skiatest::Reporter* reporter, const GrCaps& caps);
static void test_lcd_coverage(skiatest::Reporter* reporter, const GrCaps& caps);
static void test_no_dual_source_blending(skiatest::Reporter* reporter);
DEF_GPUTEST(GrPorterDuff, reporter, factory) {
GrContext* ctx = factory->get(GrContextFactory::kNull_GLContextType);
if (!ctx) {
SkFAIL("Failed to create null context.");
return;
}
const GrCaps& caps = *ctx->getGpu()->caps();
if (!caps.shaderCaps()->dualSourceBlendingSupport()) {
SkFAIL("Null context does not support dual source blending.");
return;
}
test_color_unknown_with_coverage(reporter, caps);
test_color_unknown_no_coverage(reporter, caps);
test_color_opaque_with_coverage(reporter, caps);
test_color_opaque_no_coverage(reporter, caps);
test_lcd_coverage(reporter, caps);
test_no_dual_source_blending(reporter);
}
////////////////////////////////////////////////////////////////////////////////
#define TEST_ASSERT(...) REPORTER_ASSERT(reporter, __VA_ARGS__)
enum {
kNone_OutputType,
kCoverage_OutputType,
kModulate_OutputType,
kISAModulate_OutputType,
kISCModulate_OutputType
};
enum {
kNone_Opt = GrXferProcessor::kNone_Opt,
kSkipDraw_OptFlag = GrXferProcessor::kSkipDraw_OptFlag,
kIgnoreColor_OptFlag = GrXferProcessor::kIgnoreColor_OptFlag,
kIgnoreCoverage_OptFlag = GrXferProcessor::kIgnoreCoverage_OptFlag,
kCanTweakAlphaForCoverage_OptFlag = GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag
};
class GrPorterDuffTest {
public:
struct XPInfo {
XPInfo(skiatest::Reporter* reporter, SkXfermode::Mode xfermode, const GrCaps& caps,
const GrProcOptInfo& colorPOI, const GrProcOptInfo& covPOI) {
SkAutoTUnref<GrXPFactory> xpf(GrPorterDuffXPFactory::Create(xfermode));
SkAutoTUnref<GrXferProcessor> xp(
xpf->createXferProcessor(colorPOI, covPOI, false, NULL, caps));
TEST_ASSERT(!xpf->willNeedDstTexture(caps, colorPOI, covPOI, false));
xpf->getInvariantBlendedColor(colorPOI, &fBlendedColor);
fOptFlags = xp->getOptimizations(colorPOI, covPOI, false, NULL, caps);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
GetXPOutputTypes(xp, &fPrimaryOutputType, &fSecondaryOutputType);
xp->getBlendInfo(&fBlendInfo);
TEST_ASSERT(!xp->willReadDstColor());
TEST_ASSERT(xp->hasSecondaryOutput() == GrBlendCoeffRefsSrc2(fBlendInfo.fDstBlend));
}
GrXPFactory::InvariantBlendedColor fBlendedColor;
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
int fOptFlags;
int fPrimaryOutputType;
int fSecondaryOutputType;
GrXferProcessor::BlendInfo fBlendInfo;
};
static void GetXPOutputTypes(const GrXferProcessor* xp, int* outPrimary, int* outSecondary) {
GrPorterDuffXPFactory::TestGetXPOutputTypes(xp, outPrimary, outSecondary);
}
};
static void test_color_unknown_with_coverage(skiatest::Reporter* reporter, const GrCaps& caps) {
GrProcOptInfo colorPOI, covPOI;
colorPOI.calcWithInitialValues(NULL, 0, 0, kNone_GrColorComponentFlags, false);
covPOI.calcWithInitialValues(NULL, 0, 0, kNone_GrColorComponentFlags, true);
SkASSERT(!colorPOI.isOpaque());
SkASSERT(!colorPOI.isSolidWhite());
SkASSERT(!covPOI.isSolidWhite());
SkASSERT(!covPOI.isFourChannelOutput());
for (int m = 0; m <= SkXfermode::kLastCoeffMode; m++) {
SkXfermode::Mode xfermode = static_cast<SkXfermode::Mode>(m);
const GrPorterDuffTest::XPInfo xpi(reporter, xfermode, caps, colorPOI, covPOI);
switch (xfermode) {
case SkXfermode::kClear_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(0 == xpi.fBlendedColor.fKnownColor);
TEST_ASSERT(kRGBA_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreColor_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kCoverage_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kReverseSubtract_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDC_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrc_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kNone_Opt) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kCoverage_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kIS2A_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDst_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kSkipDraw_OptFlag |
kIgnoreColor_OptFlag |
kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kNone_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(!xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcOver_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstOver_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcIn_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kNone_Opt) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kCoverage_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kIS2A_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstIn_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kNone_Opt) == xpi.fOptFlags);
TEST_ASSERT(kISAModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kReverseSubtract_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDC_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcOut_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kNone_Opt) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kCoverage_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kIS2A_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstOut_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcATop_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstATop_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kNone_Opt) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kISAModulate_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kIS2C_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kXor_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kPlus_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kModulate_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kNone_Opt) == xpi.fOptFlags);
TEST_ASSERT(kISCModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kReverseSubtract_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDC_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kScreen_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISC_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
default:
ERRORF(reporter, "Invalid xfermode.");
break;
}
}
}
static void test_color_unknown_no_coverage(skiatest::Reporter* reporter, const GrCaps& caps) {
GrProcOptInfo colorPOI, covPOI;
colorPOI.calcWithInitialValues(NULL, 0, GrColorPackRGBA(229, 0, 154, 0),
kR_GrColorComponentFlag | kB_GrColorComponentFlag, false);
covPOI.calcWithInitialValues(NULL, 0, GrColorPackA4(255), kRGBA_GrColorComponentFlags, true);
SkASSERT(!colorPOI.isOpaque());
SkASSERT(!colorPOI.isSolidWhite());
SkASSERT(covPOI.isSolidWhite());
SkASSERT(!covPOI.isFourChannelOutput());
for (int m = 0; m <= SkXfermode::kLastCoeffMode; m++) {
SkXfermode::Mode xfermode = static_cast<SkXfermode::Mode>(m);
const GrPorterDuffTest::XPInfo xpi(reporter, xfermode, caps, colorPOI, covPOI);
switch (xfermode) {
case SkXfermode::kClear_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(0 == xpi.fBlendedColor.fKnownColor);
TEST_ASSERT(kRGBA_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreColor_OptFlag |
kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kNone_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrc_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(229 == GrColorUnpackR(xpi.fBlendedColor.fKnownColor));
TEST_ASSERT(154 == GrColorUnpackB(xpi.fBlendedColor.fKnownColor));
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kR_GrColorComponentFlag |
kB_GrColorComponentFlag) == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDst_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kSkipDraw_OptFlag |
kIgnoreColor_OptFlag |
kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kNone_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(!xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcOver_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstOver_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcIn_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstIn_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kSA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcOut_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstOut_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcATop_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstATop_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kSA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kXor_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kPlus_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kModulate_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kSC_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kScreen_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISC_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
default:
ERRORF(reporter, "Invalid xfermode.");
break;
}
}
}
static void test_color_opaque_with_coverage(skiatest::Reporter* reporter, const GrCaps& caps) {
GrProcOptInfo colorPOI, covPOI;
colorPOI.calcWithInitialValues(NULL, 0, GrColorPackA4(255), kA_GrColorComponentFlag, false);
covPOI.calcWithInitialValues(NULL, 0, 0, kNone_GrColorComponentFlags, true);
SkASSERT(colorPOI.isOpaque());
SkASSERT(!colorPOI.isSolidWhite());
SkASSERT(!covPOI.isSolidWhite());
SkASSERT(!covPOI.isFourChannelOutput());
for (int m = 0; m <= SkXfermode::kLastCoeffMode; m++) {
SkXfermode::Mode xfermode = static_cast<SkXfermode::Mode>(m);
const GrPorterDuffTest::XPInfo xpi(reporter, xfermode, caps, colorPOI, covPOI);
switch (xfermode) {
case SkXfermode::kClear_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(0 == xpi.fBlendedColor.fKnownColor);
TEST_ASSERT(kRGBA_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreColor_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kCoverage_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kReverseSubtract_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDC_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrc_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(255 == GrColorUnpackA(xpi.fBlendedColor.fKnownColor));
TEST_ASSERT(kA_GrColorComponentFlag == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDst_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kSkipDraw_OptFlag |
kIgnoreColor_OptFlag |
kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kNone_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(!xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcOver_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(255 == GrColorUnpackA(xpi.fBlendedColor.fKnownColor));
TEST_ASSERT(kA_GrColorComponentFlag == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstOver_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcIn_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstIn_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kSkipDraw_OptFlag |
kIgnoreColor_OptFlag |
kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kNone_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(!xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcOut_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstOut_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(0 == xpi.fBlendedColor.fKnownColor);
TEST_ASSERT(kRGBA_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreColor_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kCoverage_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kReverseSubtract_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDC_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcATop_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstATop_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kXor_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISA_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kPlus_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kModulate_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kNone_Opt) == xpi.fOptFlags);
TEST_ASSERT(kISCModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kReverseSubtract_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDC_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kScreen_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISC_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
default:
ERRORF(reporter, "Invalid xfermode.");
break;
}
}
}
static void test_color_opaque_no_coverage(skiatest::Reporter* reporter, const GrCaps& caps) {
GrProcOptInfo colorPOI, covPOI;
colorPOI.calcWithInitialValues(NULL, 0, GrColorPackRGBA(0, 82, 0, 255),
kG_GrColorComponentFlag | kA_GrColorComponentFlag, false);
covPOI.calcWithInitialValues(NULL, 0, GrColorPackA4(255), kRGBA_GrColorComponentFlags, true);
SkASSERT(colorPOI.isOpaque());
SkASSERT(!colorPOI.isSolidWhite());
SkASSERT(covPOI.isSolidWhite());
SkASSERT(!covPOI.isFourChannelOutput());
for (int m = 0; m <= SkXfermode::kLastCoeffMode; m++) {
SkXfermode::Mode xfermode = static_cast<SkXfermode::Mode>(m);
const GrPorterDuffTest::XPInfo xpi(reporter, xfermode, caps, colorPOI, covPOI);
switch (xfermode) {
case SkXfermode::kClear_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(0 == xpi.fBlendedColor.fKnownColor);
TEST_ASSERT(kRGBA_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreColor_OptFlag |
kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kNone_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrc_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(82 == GrColorUnpackG(xpi.fBlendedColor.fKnownColor));
TEST_ASSERT(255 == GrColorUnpackA(xpi.fBlendedColor.fKnownColor));
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kG_GrColorComponentFlag |
kA_GrColorComponentFlag) == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDst_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kSkipDraw_OptFlag |
kIgnoreColor_OptFlag |
kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kNone_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(!xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcOver_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(82 == GrColorUnpackG(xpi.fBlendedColor.fKnownColor));
TEST_ASSERT(255 == GrColorUnpackA(xpi.fBlendedColor.fKnownColor));
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kG_GrColorComponentFlag |
kA_GrColorComponentFlag) == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstOver_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcIn_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstIn_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kSkipDraw_OptFlag |
kIgnoreColor_OptFlag |
kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kNone_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(!xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcOut_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstOut_Mode:
TEST_ASSERT(!xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(0 == xpi.fBlendedColor.fKnownColor);
TEST_ASSERT(kRGBA_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreColor_OptFlag |
kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kNone_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kSrcATop_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kDstATop_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kXor_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kIDA_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kPlus_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kModulate_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kZero_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kSC_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
case SkXfermode::kScreen_Mode:
TEST_ASSERT(xpi.fBlendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fBlendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
TEST_ASSERT((kIgnoreCoverage_OptFlag |
kCanTweakAlphaForCoverage_OptFlag) == xpi.fOptFlags);
TEST_ASSERT(kModulate_OutputType == xpi.fPrimaryOutputType);
TEST_ASSERT(kNone_OutputType == xpi.fSecondaryOutputType);
TEST_ASSERT(kAdd_GrBlendEquation == xpi.fBlendInfo.fEquation);
TEST_ASSERT(kOne_GrBlendCoeff == xpi.fBlendInfo.fSrcBlend);
TEST_ASSERT(kISC_GrBlendCoeff == xpi.fBlendInfo.fDstBlend);
TEST_ASSERT(xpi.fBlendInfo.fWriteColor);
break;
default:
ERRORF(reporter, "Invalid xfermode.");
break;
}
}
}
static void test_lcd_coverage(skiatest::Reporter* reporter, const GrCaps& caps) {
class : public GrBatch {
void getInvariantOutputColor(GrInitInvariantOutput* out) const override {
out->setKnownFourComponents(GrColorPackRGBA(123, 45, 67, 221));
}
void getInvariantOutputCoverage(GrInitInvariantOutput* out) const override {
out->setUnknownFourComponents();
out->setUsingLCDCoverage();
}
const char* name() const override { return "Test LCD Text Batch"; }
void initBatchTracker(const GrPipelineInfo&) override {}
bool onCombineIfPossible(GrBatch*) override { return false; }
void generateGeometry(GrBatchTarget*, const GrPipeline*) override {}
} testLCDCoverageBatch;
GrProcOptInfo colorPOI, covPOI;
colorPOI.calcColorWithBatch(&testLCDCoverageBatch, NULL, 0);
covPOI.calcCoverageWithBatch(&testLCDCoverageBatch, NULL, 0);
SkASSERT(kRGBA_GrColorComponentFlags == colorPOI.validFlags());
SkASSERT(covPOI.isFourChannelOutput());
SkAutoTUnref<GrXPFactory> xpf(GrPorterDuffXPFactory::Create(SkXfermode::kSrcOver_Mode));
TEST_ASSERT(!xpf->willNeedDstTexture(caps, colorPOI, covPOI, false));
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
SkAutoTUnref<GrXferProcessor> xp(
xpf->createXferProcessor(colorPOI, covPOI, false, NULL, caps));
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
if (!xp) {
ERRORF(reporter, "Failed to create an XP with LCD coverage.");
return;
}
GrXPFactory::InvariantBlendedColor blendedColor;
xpf->getInvariantBlendedColor(colorPOI, &blendedColor);
TEST_ASSERT(blendedColor.fWillBlendWithDst);
TEST_ASSERT(kNone_GrColorComponentFlags == blendedColor.fKnownColorFlags);
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
GrColor overrideColor;
xp->getOptimizations(colorPOI, covPOI, false, &overrideColor, caps);
GrXferProcessor::BlendInfo blendInfo;
xp->getBlendInfo(&blendInfo);
TEST_ASSERT(blendInfo.fWriteColor);
}
static void test_no_dual_source_blending(skiatest::Reporter* reporter) {
GrContextOptions opts;
opts.fSuppressDualSourceBlending = true;
GrContextFactory factory(opts);
factory.get(GrContextFactory::kNull_GLContextType);
GrContext* ctx = factory.get(GrContextFactory::kNull_GLContextType);
if (!ctx) {
SkFAIL("Failed to create null context without ARB_blend_func_extended.");
return;
}
const GrCaps& caps = *ctx->caps();
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
if (caps.shaderCaps()->dualSourceBlendingSupport()) {
SkFAIL("Null context failed to honor request for no ARB_blend_func_extended.");
return;
}
GrBackendTextureDesc fakeDesc;
fakeDesc.fConfig = kRGBA_8888_GrPixelConfig;
fakeDesc.fWidth = fakeDesc.fHeight = 100;
fakeDesc.fTextureHandle = 1;
SkAutoTUnref<GrTexture> fakeTexture(ctx->resourceProvider()->wrapBackendTexture(fakeDesc));
GrXferProcessor::DstTexture fakeDstTexture;
fakeDstTexture.setTexture(fakeTexture);
static const GrColor testColors[] = {
0,
GrColorPackRGBA(0, 82, 0, 255),
GrColorPackA4(255)
};
static const GrColorComponentFlags testColorFlags[] = {
kNone_GrColorComponentFlags,
kG_GrColorComponentFlag | kA_GrColorComponentFlag,
kRGBA_GrColorComponentFlags
};
GR_STATIC_ASSERT(SK_ARRAY_COUNT(testColors) == SK_ARRAY_COUNT(testColorFlags));
for (size_t c = 0; c < SK_ARRAY_COUNT(testColors); c++) {
GrProcOptInfo colorPOI;
colorPOI.calcWithInitialValues(NULL, 0, testColors[c], testColorFlags[c], false);
for (int f = 0; f <= 1; f++) {
GrProcOptInfo covPOI;
if (!f) {
covPOI.calcWithInitialValues(NULL, 0, 0, kNone_GrColorComponentFlags, true);
} else {
covPOI.calcWithInitialValues(NULL, 0, GrColorPackA4(255),
kRGBA_GrColorComponentFlags, true);
}
for (int m = 0; m <= SkXfermode::kLastCoeffMode; m++) {
SkXfermode::Mode xfermode = static_cast<SkXfermode::Mode>(m);
SkAutoTUnref<GrXPFactory> xpf(GrPorterDuffXPFactory::Create(xfermode));
GrXferProcessor::DstTexture* dstTexture =
xpf->willNeedDstTexture(caps, colorPOI, covPOI, false) ? &fakeDstTexture : 0;
SkAutoTUnref<GrXferProcessor> xp(
xpf->createXferProcessor(colorPOI, covPOI, false, dstTexture, caps));
Implement Porter Duff XP with a blend table Removes the runtime logic used by PorterDuffXferProcessor to decide blend coeffs and shader outputs, and instead uses a compile-time constant table of pre-selected blend formulas. Separates out the dst read fallback into its own XP. Introduces a new blend strategy for srcCoeff=0 that can apply coverage with a reverse subtract blend equation instead of dual source blending. Adds new macros in GrBlend.h to analyze blend formulas both runtime. Removes kSetCoverageDrawing_OptFlag and GrSimplifyBlend as they are no longer used. Adds a GM that verifies all xfermodes, including arithmetic, with the color/coverage invariants used by Porter Duff. Adds a unit test that verifies each Porter Duff formula with every color/coverage invariant. Major changes: * Uses a reverse subtract blend equation for coverage when srcCoeff=0 (clear, dst-out [Sa=1], dst-in, modulate). Platforms that don't support dual source blending no longer require a dst copy for dst-in and modulate. * Sets BlendInfo::fWriteColor to false when the blend does not modify the dst. GrGLGpu will now use glColorMask instead of blending for these modes (dst, dst-in [Sa=1], modulate ignored for [Sc=1]). * Converts all SA blend coeffs to One for opaque inputs, and ISA to Zero if there is also no coverage. (We keep ISA around when there is coverage because we use it to tweak alpha for coverage.) * Abandons solid white optimizations for the sake of simplicity (screen was the only mode that previous had solid white opts). Minor differences: * Inconsequential differences in opt flags (e.g. we now return kCanTweakAlphaForCoverage_OptFlag even when there is no coverage). * Src coeffs when the shader outputs 0. * IS2C vs IS2A when the secondary output is scalar. BUG=skia: Committed: https://skia.googlesource.com/skia/+/9a70920db22b6309c671f8e5d519bb95570e4414 Review URL: https://codereview.chromium.org/1124373002
2015-05-27 22:08:33 +00:00
if (!xp) {
ERRORF(reporter, "Failed to create an XP without dual source blending.");
return;
}
TEST_ASSERT(!xp->hasSecondaryOutput());
xp->getOptimizations(colorPOI, covPOI, false, 0, caps);
TEST_ASSERT(!xp->hasSecondaryOutput());
}
}
}
}
#endif