diff options
| -rw-r--r-- | gm/aaxfermodes.cpp | 236 | ||||
| -rw-r--r-- | gyp/gpu.gypi | 1 | ||||
| -rw-r--r-- | include/gpu/GrColor.h | 4 | ||||
| -rw-r--r-- | include/gpu/GrContextOptions.h | 6 | ||||
| -rw-r--r-- | include/gpu/GrXferProcessor.h | 8 | ||||
| -rw-r--r-- | include/gpu/effects/GrPorterDuffXferProcessor.h | 9 | ||||
| -rw-r--r-- | src/gpu/GrBlend.cpp | 154 | ||||
| -rw-r--r-- | src/gpu/GrBlend.h | 125 | ||||
| -rw-r--r-- | src/gpu/GrCaps.cpp | 4 | ||||
| -rw-r--r-- | src/gpu/effects/GrPorterDuffXferProcessor.cpp | 1065 | ||||
| -rw-r--r-- | tests/GrPorterDuffTest.cpp | 1011 |
11 files changed, 1929 insertions, 694 deletions
diff --git a/gm/aaxfermodes.cpp b/gm/aaxfermodes.cpp new file mode 100644 index 0000000000..9970c4fd6d --- /dev/null +++ b/gm/aaxfermodes.cpp @@ -0,0 +1,236 @@ + +/* + * 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 "gm.h" +#include "SkArithmeticMode.h" +#include "SkShader.h" +#include "SkXfermode.h" + +enum { + kXfermodeCount = SkXfermode::kLastMode + 2, // All xfermodes plus arithmetic mode. + kShapeSize = 22, + kShapeSpacing = 36, + kShapeTypeSpacing = 4 * kShapeSpacing / 3, + kPaintSpacing = 3 * kShapeTypeSpacing, + kLabelSpacing = 3 * kShapeSize, + kMargin = kShapeSpacing / 2, + kXfermodeTypeSpacing = kLabelSpacing + 2 * kPaintSpacing + kShapeTypeSpacing, + kTitleSpacing = 3 * kShapeSpacing / 4, + kSubtitleSpacing = 5 * kShapeSpacing / 8 +}; + +static const SkColor kBGColor = SkColorSetARGB(200, 210, 184, 135); + +static const SkColor kShapeColors[2] = { + SkColorSetARGB(130, 255, 0, 128), // input color unknown + SkColorSetARGB(255, 0, 255, 255) // input color opaque +}; + +enum Shape { + kSquare_Shape, + kDiamond_Shape, + kOval_Shape, + + kLast_Shape = kOval_Shape +}; + +namespace skiagm { + +/** + * Verifies AA works properly on all Xfermodes, including arithmetic, with both opaque and unknown + * src colors. + */ +class AAXfermodesGM : public GM { +public: + AAXfermodesGM() {} + +protected: + SkString onShortName() override { + return SkString("aaxfermodes"); + } + + SkISize onISize() override { + return SkISize::Make(2 * kMargin + 2 * kXfermodeTypeSpacing - + (kXfermodeTypeSpacing - (kLabelSpacing + 2 * kPaintSpacing)), + 2 * kMargin + kTitleSpacing + kSubtitleSpacing + + (1 + SkXfermode::kLastCoeffMode) * kShapeSpacing); + } + + void onOnceBeforeDraw() override { + fLabelPaint.setAntiAlias(true); + sk_tool_utils::set_portable_typeface(&fLabelPaint); + fLabelPaint.setTextSize(5 * kShapeSize/8); + fLabelPaint.setSubpixelText(true); + + static const SkScalar radius = -1.4f * kShapeSize/2; + SkPoint pts[4] = { + {-radius, 0}, + {0, -1.33f * radius}, + {radius, 0}, + {0, 1.33f * radius} + }; + fPath.moveTo(pts[0]); + fPath.quadTo(pts[1], pts[2]); + fPath.quadTo(pts[3], pts[0]); + } + + void onDraw(SkCanvas* canvas) override { + sk_tool_utils::draw_checkerboard(canvas, 0xffffffff, 0xffc0c0c0, 10); + + canvas->saveLayer(NULL, NULL); + canvas->drawColor(kBGColor, SkXfermode::kSrc_Mode); + + canvas->translate(kMargin, kMargin); + + SkPaint titlePaint(fLabelPaint); + titlePaint.setTextSize(9 * titlePaint.getTextSize() / 8); + titlePaint.setFakeBoldText(true); + titlePaint.setTextAlign(SkPaint::kCenter_Align); + canvas->drawText("Porter Duff", sizeof("Porter Duff") - 1, + kLabelSpacing + 3 * kShapeTypeSpacing, + kTitleSpacing / 2 + titlePaint.getTextSize() / 3, titlePaint); + canvas->drawText("Advanced", sizeof("Advanced") - 1, + kXfermodeTypeSpacing + kLabelSpacing + 3 * kShapeTypeSpacing, + kTitleSpacing / 2 + titlePaint.getTextSize() / 3, titlePaint); + + canvas->translate(0, kTitleSpacing); + + for (size_t xfermodeSet = 0; xfermodeSet < 2; xfermodeSet++) { + size_t firstMode = (SkXfermode::kLastCoeffMode + 1) * xfermodeSet; + canvas->save(); + + fLabelPaint.setTextAlign(SkPaint::kCenter_Align); + canvas->drawText("Src Unknown", sizeof("Src Unknown") - 1, + kLabelSpacing + kShapeSpacing / 2 + kShapeTypeSpacing, + kSubtitleSpacing / 2 + fLabelPaint.getTextSize() / 3, fLabelPaint); + canvas->drawText("Src Opaque", sizeof("Src Opaque") - 1, + kLabelSpacing + kShapeSpacing / 2 + kShapeTypeSpacing + kPaintSpacing, + kSubtitleSpacing / 2 + fLabelPaint.getTextSize() / 3, fLabelPaint); + + canvas->translate(0, kSubtitleSpacing + kShapeSpacing/2); + + for (size_t m = 0; m <= SkXfermode::kLastCoeffMode; m++) { + SkXfermode::Mode mode = static_cast<SkXfermode::Mode>(firstMode + m); + canvas->save(); + + this->drawModeName(canvas, mode); + canvas->translate(kLabelSpacing + kShapeSpacing/2, 0); + + for (size_t colorIdx = 0; colorIdx < SK_ARRAY_COUNT(kShapeColors); colorIdx++) { + SkPaint paint; + this->setupShapePaint(canvas, kShapeColors[colorIdx], mode, &paint); + SkASSERT(colorIdx == 0 || 255 == paint.getAlpha()); + canvas->save(); + + for (size_t shapeIdx = 0; shapeIdx <= kLast_Shape; shapeIdx++) { + this->drawShape(canvas, static_cast<Shape>(shapeIdx), paint, mode); + canvas->translate(kShapeTypeSpacing, 0); + } + + canvas->restore(); + canvas->translate(kPaintSpacing, 0); + } + + canvas->restore(); + canvas->translate(0, kShapeSpacing); + } + + canvas->restore(); + canvas->translate(kXfermodeTypeSpacing, 0); + } + + canvas->restore(); + } + + void drawModeName(SkCanvas* canvas, SkXfermode::Mode mode) { + const char* modeName = mode <= SkXfermode::kLastMode ? SkXfermode::ModeName(mode) + : "Arithmetic"; + fLabelPaint.setTextAlign(SkPaint::kRight_Align); + canvas->drawText(modeName, strlen(modeName), kLabelSpacing - kShapeSize / 4, + fLabelPaint.getTextSize() / 3, fLabelPaint); + } + + void setupShapePaint(SkCanvas* canvas, GrColor color, SkXfermode::Mode mode, SkPaint* paint) { + paint->setColor(color); + + if (mode == SkXfermode::kPlus_Mode) { + // Check for overflow, otherwise we might get confusing AA artifacts. + int maxSum = SkTMax(SkTMax(SkColorGetA(kBGColor) + SkColorGetA(color), + SkColorGetR(kBGColor) + SkColorGetR(color)), + SkTMax(SkColorGetG(kBGColor) + SkColorGetG(color), + SkColorGetB(kBGColor) + SkColorGetB(color))); + + if (maxSum > 255) { + SkPaint dimPaint; + dimPaint.setAntiAlias(false); + dimPaint.setXfermode(SkXfermode::Create(SkXfermode::kDstIn_Mode)); + if (255 != paint->getAlpha()) { + // Dim the src and dst colors. + dimPaint.setARGB(255 * 255 / maxSum, 0, 0, 0); + paint->setAlpha(255 * paint->getAlpha() / maxSum); + } else { + // Just clear the dst, we need to preserve the paint's opacity. + dimPaint.setARGB(0, 0, 0, 0); + } + canvas->drawRectCoords(-kShapeSpacing/2, -kShapeSpacing/2, + kShapeSpacing/2 + 2 * kShapeTypeSpacing, + kShapeSpacing/2, dimPaint); + } + } + } + + void drawShape(SkCanvas* canvas, Shape shape, const SkPaint& paint, SkXfermode::Mode mode) { + SkPaint shapePaint(paint); + shapePaint.setAntiAlias(kSquare_Shape != shape); + + SkAutoTUnref<SkXfermode> xfermode; + if (mode <= SkXfermode::kLastMode) { + xfermode.reset(SkXfermode::Create(mode)); + } else { + xfermode.reset(SkArithmeticMode::Create(+1.0f, +0.25f, -0.5f, +0.1f)); + } + shapePaint.setXfermode(xfermode); + + switch (shape) { + case kSquare_Shape: + canvas->drawRectCoords(-kShapeSize/2, -kShapeSize/2, kShapeSize/2, kShapeSize/2, + shapePaint); + break; + + case kDiamond_Shape: + canvas->save(); + canvas->rotate(45); + canvas->drawRectCoords(-kShapeSize/2, -kShapeSize/2, kShapeSize/2, kShapeSize/2, + shapePaint); + canvas->restore(); + break; + + case kOval_Shape: + canvas->save(); + canvas->rotate(static_cast<SkScalar>((511 * mode + 257) % 360)); + canvas->drawPath(fPath, shapePaint); + canvas->restore(); + break; + + default: + SkFAIL("Invalid shape."); + } + } + +private: + SkPaint fLabelPaint; + SkPath fPath; + + typedef GM INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + +static GM* MyFactory(void*) { return new AAXfermodesGM; } +static GMRegistry reg(MyFactory); + +} diff --git a/gyp/gpu.gypi b/gyp/gpu.gypi index 8a93bf8264..6a93a7c7d9 100644 --- a/gyp/gpu.gypi +++ b/gyp/gpu.gypi @@ -81,7 +81,6 @@ '<(skia_src_path)/gpu/GrBatchTarget.h', '<(skia_src_path)/gpu/GrBatchTest.cpp', '<(skia_src_path)/gpu/GrBatchTest.h', - '<(skia_src_path)/gpu/GrBlend.cpp', '<(skia_src_path)/gpu/GrBlend.h', '<(skia_src_path)/gpu/GrBlurUtils.cpp', '<(skia_src_path)/gpu/GrBlurUtils.h', diff --git a/include/gpu/GrColor.h b/include/gpu/GrColor.h index f5757b93f5..9ccc638fc9 100644 --- a/include/gpu/GrColor.h +++ b/include/gpu/GrColor.h @@ -142,6 +142,8 @@ enum GrColorComponentFlags { kB_GrColorComponentFlag = 1 << (GrColor_SHIFT_B / 8), kA_GrColorComponentFlag = 1 << (GrColor_SHIFT_A / 8), + kNone_GrColorComponentFlags = 0, + kRGB_GrColorComponentFlags = (kR_GrColorComponentFlag | kG_GrColorComponentFlag | kB_GrColorComponentFlag), @@ -149,6 +151,8 @@ enum GrColorComponentFlags { kB_GrColorComponentFlag | kA_GrColorComponentFlag) }; +GR_MAKE_BITFIELD_OPS(GrColorComponentFlags) + static inline char GrColorComponentFlagToChar(GrColorComponentFlags component) { SkASSERT(SkIsPow2(component)); switch (component) { diff --git a/include/gpu/GrContextOptions.h b/include/gpu/GrContextOptions.h index 686d6a9ac0..dfb352b507 100644 --- a/include/gpu/GrContextOptions.h +++ b/include/gpu/GrContextOptions.h @@ -14,7 +14,8 @@ struct GrContextOptions { GrContextOptions() : fDrawPathToCompressedTexture(false) , fSuppressPrints(false) - , fMaxTextureSizeOverride(SK_MaxS32) {} + , fMaxTextureSizeOverride(SK_MaxS32) + , fSuppressDualSourceBlending(false) {} // EXPERIMENTAL // May be removed in the future, or may become standard depending @@ -28,7 +29,8 @@ struct GrContextOptions { overrides can only reduce the feature set or limits, never increase them beyond the detected values. */ - int fMaxTextureSizeOverride; + int fMaxTextureSizeOverride; + bool fSuppressDualSourceBlending; }; #endif diff --git a/include/gpu/GrXferProcessor.h b/include/gpu/GrXferProcessor.h index a9faad016c..812a9b32ab 100644 --- a/include/gpu/GrXferProcessor.h +++ b/include/gpu/GrXferProcessor.h @@ -51,10 +51,6 @@ enum GrBlendEquation { static const int kGrBlendEquationCnt = kLast_GrBlendEquation + 1; -inline bool GrBlendEquationIsAdvanced(GrBlendEquation equation) { - return equation >= kFirstAdvancedGrBlendEquation; -} - /** * Coeffecients for alpha-blending. */ @@ -184,10 +180,6 @@ public: */ kOverrideColor_OptFlag = 0x8, /** - * Set CoverageDrawing_StateBit - */ - kSetCoverageDrawing_OptFlag = 0x10, - /** * Can tweak alpha for coverage. Currently this flag should only be used by a batch */ kCanTweakAlphaForCoverage_OptFlag = 0x20, diff --git a/include/gpu/effects/GrPorterDuffXferProcessor.h b/include/gpu/effects/GrPorterDuffXferProcessor.h index f8fc1a38cc..e4f72203f6 100644 --- a/include/gpu/effects/GrPorterDuffXferProcessor.h +++ b/include/gpu/effects/GrPorterDuffXferProcessor.h @@ -24,7 +24,7 @@ public: GrXPFactory::InvariantOutput*) const override; private: - GrPorterDuffXPFactory(GrBlendCoeff src, GrBlendCoeff dst); + GrPorterDuffXPFactory(SkXfermode::Mode); GrXferProcessor* onCreateXferProcessor(const GrCaps& caps, const GrProcOptInfo& colorPOI, @@ -37,14 +37,15 @@ private: bool onIsEqual(const GrXPFactory& xpfBase) const override { const GrPorterDuffXPFactory& xpf = xpfBase.cast<GrPorterDuffXPFactory>(); - return (fSrcCoeff == xpf.fSrcCoeff && fDstCoeff == xpf.fDstCoeff); + return fXfermode == xpf.fXfermode; } GR_DECLARE_XP_FACTORY_TEST; + static void TestGetXPOutputTypes(const GrXferProcessor*, int* outPrimary, int* outSecondary); - GrBlendCoeff fSrcCoeff; - GrBlendCoeff fDstCoeff; + SkXfermode::Mode fXfermode; + friend class GrPorterDuffTest; // for TestGetXPOutputTypes() typedef GrXPFactory INHERITED; }; diff --git a/src/gpu/GrBlend.cpp b/src/gpu/GrBlend.cpp deleted file mode 100644 index 52e335e9b0..0000000000 --- a/src/gpu/GrBlend.cpp +++ /dev/null @@ -1,154 +0,0 @@ - -/* - * Copyright 2013 Google Inc. - * - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "GrBlend.h" - -static inline GrBlendCoeff swap_coeff_src_dst(GrBlendCoeff coeff) { - switch (coeff) { - case kDC_GrBlendCoeff: - return kSC_GrBlendCoeff; - case kIDC_GrBlendCoeff: - return kISC_GrBlendCoeff; - case kDA_GrBlendCoeff: - return kSA_GrBlendCoeff; - case kIDA_GrBlendCoeff: - return kISA_GrBlendCoeff; - case kSC_GrBlendCoeff: - return kDC_GrBlendCoeff; - case kISC_GrBlendCoeff: - return kIDC_GrBlendCoeff; - case kSA_GrBlendCoeff: - return kDA_GrBlendCoeff; - case kISA_GrBlendCoeff: - return kIDA_GrBlendCoeff; - default: - return coeff; - } -} - -static inline unsigned saturated_add(unsigned a, unsigned b) { - SkASSERT(a <= 255); - SkASSERT(b <= 255); - unsigned sum = a + b; - if (sum > 255) { - sum = 255; - } - return sum; -} - -static GrColor add_colors(GrColor src, GrColor dst) { - unsigned r = saturated_add(GrColorUnpackR(src), GrColorUnpackR(dst)); - unsigned g = saturated_add(GrColorUnpackG(src), GrColorUnpackG(dst)); - unsigned b = saturated_add(GrColorUnpackB(src), GrColorUnpackB(dst)); - unsigned a = saturated_add(GrColorUnpackA(src), GrColorUnpackA(dst)); - return GrColorPackRGBA(r, g, b, a); -} - -static inline bool valid_color(uint32_t compFlags) { - return (kRGBA_GrColorComponentFlags & compFlags) == kRGBA_GrColorComponentFlags; -} - -static GrColor simplify_blend_term(GrBlendCoeff* srcCoeff, - GrColor srcColor, uint32_t srcCompFlags, - GrColor dstColor, uint32_t dstCompFlags, - GrColor constantColor) { - - SkASSERT(!GrBlendCoeffRefsSrc(*srcCoeff)); - SkASSERT(srcCoeff); - - // Check whether srcCoeff can be reduced to kOne or kZero based on known color inputs. - // We could pick out the coeff r,g,b,a values here and use them to compute the blend term color, - // if possible, below but that is not implemented now. - switch (*srcCoeff) { - case kIDC_GrBlendCoeff: - dstColor = ~dstColor; // fallthrough - case kDC_GrBlendCoeff: - if (valid_color(dstCompFlags)) { - if (0xffffffff == dstColor) { - *srcCoeff = kOne_GrBlendCoeff; - } else if (0 == dstColor) { - *srcCoeff = kZero_GrBlendCoeff; - } - } - break; - - case kIDA_GrBlendCoeff: - dstColor = ~dstColor; // fallthrough - case kDA_GrBlendCoeff: - if (kA_GrColorComponentFlag & dstCompFlags) { - if (0xff == GrColorUnpackA(dstColor)) { - *srcCoeff = kOne_GrBlendCoeff; - } else if (0 == GrColorUnpackA(dstColor)) { - *srcCoeff = kZero_GrBlendCoeff; - } - } - break; - - case kIConstC_GrBlendCoeff: - constantColor = ~constantColor; // fallthrough - case kConstC_GrBlendCoeff: - if (0xffffffff == constantColor) { - *srcCoeff = kOne_GrBlendCoeff; - } else if (0 == constantColor) { - *srcCoeff = kZero_GrBlendCoeff; - } - break; - - case kIConstA_GrBlendCoeff: - constantColor = ~constantColor; // fallthrough - case kConstA_GrBlendCoeff: - if (0xff == GrColorUnpackA(constantColor)) { - *srcCoeff = kOne_GrBlendCoeff; - } else if (0 == GrColorUnpackA(constantColor)) { - *srcCoeff = kZero_GrBlendCoeff; - } - break; - - default: - break; - } - // We may have invalidated these above and shouldn't read them again. - SkDEBUGCODE(dstColor = constantColor = GrColor_ILLEGAL;) - - if (kZero_GrBlendCoeff == *srcCoeff || (valid_color(srcCompFlags) && 0 == srcColor)) { - *srcCoeff = kZero_GrBlendCoeff; - return 0; - } - - if (kOne_GrBlendCoeff == *srcCoeff && valid_color(srcCompFlags)) { - return srcColor; - } else { - return GrColor_ILLEGAL; - } -} - -GrColor GrSimplifyBlend(GrBlendCoeff* srcCoeff, - GrBlendCoeff* dstCoeff, - GrColor srcColor, uint32_t srcCompFlags, - GrColor dstColor, uint32_t dstCompFlags, - GrColor constantColor) { - GrColor srcTermColor = simplify_blend_term(srcCoeff, - srcColor, srcCompFlags, - dstColor, dstCompFlags, - constantColor); - - // We call the same function to simplify the dst blend coeff. We trick it out by swapping the - // src and dst. - GrBlendCoeff spoofedCoeff = swap_coeff_src_dst(*dstCoeff); - GrColor dstTermColor = simplify_blend_term(&spoofedCoeff, - dstColor, dstCompFlags, - srcColor, srcCompFlags, - constantColor); - *dstCoeff = swap_coeff_src_dst(spoofedCoeff); - - if (GrColor_ILLEGAL != srcTermColor && GrColor_ILLEGAL != dstTermColor) { - return add_colors(srcTermColor, dstTermColor); - } else { - return GrColor_ILLEGAL; - } -} diff --git a/src/gpu/GrBlend.h b/src/gpu/GrBlend.h index e5b8993377..7021902765 100644 --- a/src/gpu/GrBlend.h +++ b/src/gpu/GrBlend.h @@ -7,13 +7,22 @@ */ #include "GrTypes.h" -#include "GrColor.h" +#include "SkTLogic.h" #include "GrXferProcessor.h" #ifndef GrBlend_DEFINED #define GrBlend_DEFINED -static inline bool GrBlendCoeffRefsSrc(GrBlendCoeff coeff) { +template<GrBlendCoeff Coeff> +struct GrTBlendCoeffRefsSrc : SkTBool<kSC_GrBlendCoeff == Coeff || + kISC_GrBlendCoeff == Coeff || + kSA_GrBlendCoeff == Coeff || + kISA_GrBlendCoeff == Coeff> {}; + +#define GR_BLEND_COEFF_REFS_SRC(COEFF) \ + GrTBlendCoeffRefsSrc<COEFF>::value + +inline bool GrBlendCoeffRefsSrc(GrBlendCoeff coeff) { switch (coeff) { case kSC_GrBlendCoeff: case kISC_GrBlendCoeff: @@ -25,7 +34,17 @@ static inline bool GrBlendCoeffRefsSrc(GrBlendCoeff coeff) { } } -static inline bool GrBlendCoeffRefsDst(GrBlendCoeff coeff) { + +template<GrBlendCoeff Coeff> +struct GrTBlendCoeffRefsDst : SkTBool<kDC_GrBlendCoeff == Coeff || + kIDC_GrBlendCoeff == Coeff || + kDA_GrBlendCoeff == Coeff || + kIDA_GrBlendCoeff == Coeff> {}; + +#define GR_BLEND_COEFF_REFS_DST(COEFF) \ + GrTBlendCoeffRefsDst<COEFF>::value + +inline bool GrBlendCoeffRefsDst(GrBlendCoeff coeff) { switch (coeff) { case kDC_GrBlendCoeff: case kIDC_GrBlendCoeff: @@ -37,10 +56,100 @@ static inline bool GrBlendCoeffRefsDst(GrBlendCoeff coeff) { } } -GrColor GrSimplifyBlend(GrBlendCoeff* srcCoeff, - GrBlendCoeff* dstCoeff, - GrColor srcColor, uint32_t srcCompFlags, - GrColor dstColor, uint32_t dstCompFlags, - GrColor constantColor); + +template<GrBlendCoeff Coeff> +struct GrTBlendCoeffRefsSrc2 : SkTBool<kS2C_GrBlendCoeff == Coeff || + kIS2C_GrBlendCoeff == Coeff || + kS2A_GrBlendCoeff == Coeff || + kIS2A_GrBlendCoeff == Coeff> {}; + +#define GR_BLEND_COEFF_REFS_SRC2(COEFF) \ + GrTBlendCoeffRefsSrc2<COEFF>::value + +inline bool GrBlendCoeffRefsSrc2(GrBlendCoeff coeff) { + switch (coeff) { + case kS2C_GrBlendCoeff: + case kIS2C_GrBlendCoeff: + case kS2A_GrBlendCoeff: + case kIS2A_GrBlendCoeff: + return true; + default: + return false; + } +} + + +template<GrBlendCoeff SrcCoeff, GrBlendCoeff DstCoeff> +struct GrTBlendCoeffsUseSrcColor : SkTBool<kZero_GrBlendCoeff != SrcCoeff || + GR_BLEND_COEFF_REFS_SRC(DstCoeff)> {}; + +#define GR_BLEND_COEFFS_USE_SRC_COLOR(SRC_COEFF, DST_COEFF) \ + GrTBlendCoeffsUseSrcColor<SRC_COEFF, DST_COEFF>::value + + +template<GrBlendCoeff SrcCoeff, GrBlendCoeff DstCoeff> +struct GrTBlendCoeffsUseDstColor : SkTBool<GR_BLEND_COEFF_REFS_DST(SrcCoeff) || + kZero_GrBlendCoeff != DstCoeff> {}; + +#define GR_BLEND_COEFFS_USE_DST_COLOR(SRC_COEFF, DST_COEFF) \ + GrTBlendCoeffsUseDstColor<SRC_COEFF, DST_COEFF>::value + + +template<GrBlendEquation Equation> +struct GrTBlendEquationIsAdvanced : SkTBool<Equation >= kFirstAdvancedGrBlendEquation> {}; + +#define GR_BLEND_EQUATION_IS_ADVANCED(EQUATION) \ + GrTBlendEquationIsAdvanced<EQUATION>::value + +inline bool GrBlendEquationIsAdvanced(GrBlendEquation equation) { + return equation >= kFirstAdvancedGrBlendEquation; +} + + +template<GrBlendEquation BlendEquation, GrBlendCoeff SrcCoeff, GrBlendCoeff DstCoeff> +struct GrTBlendModifiesDst : SkTBool<(kAdd_GrBlendEquation != BlendEquation && + kReverseSubtract_GrBlendEquation != BlendEquation) || + kZero_GrBlendCoeff != SrcCoeff || + kOne_GrBlendCoeff != DstCoeff> {}; + +#define GR_BLEND_MODIFIES_DST(EQUATION, SRC_COEFF, DST_COEFF) \ + GrTBlendModifiesDst<EQUATION, SRC_COEFF, DST_COEFF>::value + + +/** + * Advanced blend equations can always tweak alpha for coverage. (See GrCustomXfermode.cpp) + * + * For "add" and "reverse subtract" the blend equation with f=coverage is: + * + * D' = f * (S * srcCoeff + D * dstCoeff) + (1-f) * D + * = f * S * srcCoeff + D * (f * dstCoeff + (1 - f)) + * + * (Let srcCoeff be negative for reverse subtract.) We can tweak alpha for coverage when the + * following relationship holds: + * + * (f*S) * srcCoeff' + D * dstCoeff' == f * S * srcCoeff + D * (f * dstCoeff + (1 - f)) + * + * (Where srcCoeff' and dstCoeff' have any reference to S pre-multiplied by f.) + * + * It's easy to see this works for the src term as long as srcCoeff' == srcCoeff (meaning srcCoeff + * does not reference S). For the dst term, this will work as long as the following is true: + *| + * dstCoeff' == f * dstCoeff + (1 - f) + * dstCoeff' == 1 - f * (1 - dstCoeff) + * + * By inspection we can see this will work as long as dstCoeff has a 1, and any other term in + * dstCoeff references S. + */ +template<GrBlendEquation Equation, GrBlendCoeff SrcCoeff, GrBlendCoeff DstCoeff> +struct GrTBlendCanTweakAlphaForCoverage : SkTBool<GR_BLEND_EQUATION_IS_ADVANCED(Equation) || + ((kAdd_GrBlendEquation == Equation || + kReverseSubtract_GrBlendEquation == Equation) && + !GR_BLEND_COEFF_REFS_SRC(SrcCoeff) && + (kOne_GrBlendCoeff == DstCoeff || + kISC_GrBlendCoeff == DstCoeff || + kISA_GrBlendCoeff == DstCoeff))> {}; + +#define GR_BLEND_CAN_TWEAK_ALPHA_FOR_COVERAGE(EQUATION, SRC_COEFF, DST_COEFF) \ + GrTBlendCanTweakAlphaForCoverage<EQUATION, SRC_COEFF, DST_COEFF>::value #endif diff --git a/src/gpu/GrCaps.cpp b/src/gpu/GrCaps.cpp index 625bd90e8f..f078fad9fb 100644 --- a/src/gpu/GrCaps.cpp +++ b/src/gpu/GrCaps.cpp @@ -73,8 +73,8 @@ SkString GrShaderCaps::dump() const { return r; } -void GrShaderCaps::applyOptionsOverrides(const GrContextOptions&) { - // Currently no overrides apply to shader caps. +void GrShaderCaps::applyOptionsOverrides(const GrContextOptions& options) { + fDualSourceBlendingSupport = fDualSourceBlendingSupport && !options.fSuppressDualSourceBlending; } /////////////////////////////////////////////////////////////////////////////// diff --git a/src/gpu/effects/GrPorterDuffXferProcessor.cpp b/src/gpu/effects/GrPorterDuffXferProcessor.cpp index d1e02d2c2b..812cfeaaa4 100644 --- a/src/gpu/effects/GrPorterDuffXferProcessor.cpp +++ b/src/gpu/effects/GrPorterDuffXferProcessor.cpp @@ -17,79 +17,305 @@ #include "gl/builders/GrGLFragmentShaderBuilder.h" #include "gl/builders/GrGLProgramBuilder.h" -static bool can_tweak_alpha_for_coverage(GrBlendCoeff dstCoeff) { - /* - The fractional coverage is f. - The src and dst coeffs are Cs and Cd. - The dst and src colors are S and D. - We want the blend to compute: f*Cs*S + (f*Cd + (1-f))D. By tweaking the source color's alpha - we're replacing S with S'=fS. It's obvious that that first term will always be ok. The second - term can be rearranged as [1-(1-Cd)f]D. By substituting in the various possibilities for Cd we - find that only 1, ISA, and ISC produce the correct destination when applied to S' and D. +/** + * Wraps the shader outputs and HW blend state that comprise a Porter Duff blend mode with coverage. + */ +struct BlendFormula { +public: + /** + * Values the shader can write to primary and secondary outputs. These must all be modulated by + * coverage to support mixed samples. The XP will ignore the multiplies when not using coverage. */ - return kOne_GrBlendCoeff == dstCoeff || - kISA_GrBlendCoeff == dstCoeff || - kISC_GrBlendCoeff == dstCoeff; -} + enum OutputType { + kNone_OutputType, //<! 0 + kCoverage_OutputType, //<! inputCoverage + kModulate_OutputType, //<! inputColor * inputCoverage + kISAModulate_OutputType, //<! (1 - inputColor.a) * inputCoverage + kISCModulate_OutputType, //<! (1 - inputColor) * inputCoverage + + kLast_OutputType = kISCModulate_OutputType + }; -class PorterDuffXferProcessor : public GrXferProcessor { -public: - static GrXferProcessor* Create(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend, - GrColor constant, const DstTexture* dstTexture, - bool willReadDstColor) { - return SkNEW_ARGS(PorterDuffXferProcessor, (srcBlend, dstBlend, constant, dstTexture, - willReadDstColor)); - } + enum Properties { + kModifiesDst_Property = 1, + kUsesDstColor_Property = 1 << 1, + kUsesInputColor_Property = 1 << 2, + kCanTweakAlphaForCoverage_Property = 1 << 3, + + kLast_Property = kCanTweakAlphaForCoverage_Property + }; - ~PorterDuffXferProcessor() override; + BlendFormula& operator =(const BlendFormula& other) { + fData = other.fData; + return *this; + } - const char* name() const override { return "Porter Duff"; } + bool operator ==(const BlendFormula& other) const { + return fData == other.fData; + } - GrGLXferProcessor* createGLInstance() const override; + bool hasSecondaryOutput() const { return kNone_OutputType != fSecondaryOutputType; } + bool modifiesDst() const { return SkToBool(fProps & kModifiesDst_Property); } + bool usesDstColor() const { return SkToBool(fProps & kUsesDstColor_Property); } + bool usesInputColor() const { return SkToBool(fProps & kUsesInputColor_Property); } + bool canTweakAlphaForCoverage() const { + return SkToBool(fProps & kCanTweakAlphaForCoverage_Property); + } - bool hasSecondaryOutput() const override; - - /////////////////////////////////////////////////////////////////////////// - /// @name Stage Output Types - //// - - enum PrimaryOutputType { - kNone_PrimaryOutputType, - kColor_PrimaryOutputType, - kCoverage_PrimaryOutputType, - // Modulate color and coverage, write result as the color output. - kModulate_PrimaryOutputType, - // Custom Porter-Duff output, used for when we explictly are reading the dst and blending - // in the shader. Secondary Output must be none if you use this. The custom blend uses the - // equation: cov * (coeffS * S + coeffD * D) + (1 - cov) * D - kCustom_PrimaryOutputType + /** + * Deduce the properties of a compile-time constant BlendFormula. + */ + template<OutputType PrimaryOut, OutputType SecondaryOut, + GrBlendEquation BlendEquation, GrBlendCoeff SrcCoeff, GrBlendCoeff DstCoeff> + struct get_properties : SkTIntegralConstant<Properties, static_cast<Properties>( + + (GR_BLEND_MODIFIES_DST(BlendEquation, SrcCoeff, DstCoeff) ? + kModifiesDst_Property : 0) | + + (GR_BLEND_COEFFS_USE_DST_COLOR(SrcCoeff, DstCoeff) ? + kUsesDstColor_Property : 0) | + + ((PrimaryOut >= kModulate_OutputType && GR_BLEND_COEFFS_USE_SRC_COLOR(SrcCoeff,DstCoeff)) || + (SecondaryOut >= kModulate_OutputType && GR_BLEND_COEFF_REFS_SRC2(DstCoeff)) ? + kUsesInputColor_Property : 0) | // We assert later that SrcCoeff doesn't ref src2. + + (kModulate_OutputType == PrimaryOut && + kNone_OutputType == SecondaryOut && + GR_BLEND_CAN_TWEAK_ALPHA_FOR_COVERAGE(BlendEquation, SrcCoeff, DstCoeff) ? + kCanTweakAlphaForCoverage_Property : 0))> { + + // The provided formula should already be optimized. + GR_STATIC_ASSERT((kNone_OutputType == PrimaryOut) == + !GR_BLEND_COEFFS_USE_SRC_COLOR(SrcCoeff, DstCoeff)); + GR_STATIC_ASSERT(!GR_BLEND_COEFF_REFS_SRC2(SrcCoeff)); + GR_STATIC_ASSERT((kNone_OutputType == SecondaryOut) == + !GR_BLEND_COEFF_REFS_SRC2(DstCoeff)); + GR_STATIC_ASSERT(PrimaryOut != SecondaryOut || kNone_OutputType == PrimaryOut); + GR_STATIC_ASSERT(kNone_OutputType != PrimaryOut || kNone_OutputType == SecondaryOut); }; - enum SecondaryOutputType { - // There is no secondary output - kNone_SecondaryOutputType, - // Writes coverage as the secondary output. Only set if dual source blending is supported - // and primary output is kModulate. - kCoverage_SecondaryOutputType, - // Writes coverage * (1 - colorA) as the secondary output. Only set if dual source blending - // is supported and primary output is kModulate. - kCoverageISA_SecondaryOutputType, - // Writes coverage * (1 - colorRGBA) as the secondary output. Only set if dual source - // blending is supported and primary output is kModulate. - kCoverageISC_SecondaryOutputType, - - kSecondaryOutputTypeCnt, + union { + struct { + // We allot the enums one more bit than they require because MSVC seems to sign-extend + // them when the top bit is set. (This is in violation of the C++03 standard 9.6/4) + OutputType fPrimaryOutputType : 4; + OutputType fSecondaryOutputType : 4; + GrBlendEquation fBlendEquation : 6; + GrBlendCoeff fSrcCoeff : 6; + GrBlendCoeff fDstCoeff : 6; + Properties fProps : 32 - (4 + 4 + 6 + 6 + 6); + }; + uint32_t fData; }; - PrimaryOutputType primaryOutputType() const { return fPrimaryOutputType; } - SecondaryOutputType secondaryOutputType() const { return fSecondaryOutputType; } + GR_STATIC_ASSERT(kLast_OutputType < (1 << 3)); + GR_STATIC_ASSERT(kLast_GrBlendEquation < (1 << 5)); + GR_STATIC_ASSERT(kLast_GrBlendCoeff < (1 << 5)); + GR_STATIC_ASSERT(kLast_Property < (1 << 6)); +}; + +GR_STATIC_ASSERT(4 == sizeof(BlendFormula)); + +GR_MAKE_BITFIELD_OPS(BlendFormula::Properties); + +/** + * Initialize a compile-time constant BlendFormula and automatically deduce fProps. + */ +#define INIT_BLEND_FORMULA(PRIMARY_OUT, SECONDARY_OUT, BLEND_EQUATION, SRC_COEFF, DST_COEFF) \ + {{{PRIMARY_OUT, \ + SECONDARY_OUT, \ + BLEND_EQUATION, SRC_COEFF, DST_COEFF, \ + BlendFormula::get_properties<PRIMARY_OUT, SECONDARY_OUT, \ + BLEND_EQUATION, SRC_COEFF, DST_COEFF>::value}}} + +/** + * When there is no coverage, or the blend mode can tweak alpha for coverage, we use the standard + * Porter Duff formula. + */ +#define COEFF_FORMULA(SRC_COEFF, DST_COEFF) \ + INIT_BLEND_FORMULA(BlendFormula::kModulate_OutputType, \ + BlendFormula::kNone_OutputType, \ + kAdd_GrBlendEquation, SRC_COEFF, DST_COEFF) + +/** + * When the coeffs are (Zero, Zero), we clear the dst. This formula has its own macro so we can set + * the primary output type to none. + */ +#define DST_CLEAR_FORMULA \ + INIT_BLEND_FORMULA(BlendFormula::kNone_OutputType, \ + BlendFormula::kNone_OutputType, \ + kAdd_GrBlendEquation, kZero_GrBlendCoeff, kZero_GrBlendCoeff) + +/** + * When the coeffs are (Zero, One), we don't write to the dst at all. This formula has its own macro + * so we can set the primary output type to none. + */ +#define NO_DST_WRITE_FORMULA \ + INIT_BLEND_FORMULA(BlendFormula::kNone_OutputType, \ + BlendFormula::kNone_OutputType, \ + kAdd_GrBlendEquation, kZero_GrBlendCoeff, kOne_GrBlendCoeff) - GrBlendCoeff getSrcBlend() const { return fSrcBlend; } - GrBlendCoeff getDstBlend() const { return fDstBlend; } +/** + * When there is coverage, the equation with f=coverage is: + * + * D' = f * (S * srcCoeff + D * dstCoeff) + (1-f) * D + * + * This can be rewritten as: + * + * D' = f * S * srcCoeff + D * (1 - [f * (1 - dstCoeff)]) + * + * To implement this formula, we output [f * (1 - dstCoeff)] for the secondary color and replace the + * HW dst coeff with IS2C. + * + * Xfer modes: dst-atop (Sa!=1) + */ +#define COVERAGE_FORMULA(ONE_MINUS_DST_COEFF_MODULATE_OUTPUT, SRC_COEFF) \ + INIT_BLEND_FORMULA(BlendFormula::kModulate_OutputType, \ + ONE_MINUS_DST_COEFF_MODULATE_OUTPUT, \ + kAdd_GrBlendEquation, SRC_COEFF, kIS2C_GrBlendCoeff) + +/** + * When there is coverage and the src coeff is Zero, the equation with f=coverage becomes: + * + * D' = f * D * dstCoeff + (1-f) * D + * + * This can be rewritten as: + * + * D' = D - D * [f * (1 - dstCoeff)] + * + * To implement this formula, we output [f * (1 - dstCoeff)] for the primary color and use a reverse + * subtract HW blend equation with coeffs of (DC, One). + * + * Xfer modes: clear, dst-out (Sa=1), dst-in (Sa!=1), modulate (Sc!=1) + */ +#define COVERAGE_SRC_COEFF_ZERO_FORMULA(ONE_MINUS_DST_COEFF_MODULATE_OUTPUT) \ + INIT_BLEND_FORMULA(ONE_MINUS_DST_COEFF_MODULATE_OUTPUT, \ + BlendFormula::kNone_OutputType, \ + kReverseSubtract_GrBlendEquation, kDC_GrBlendCoeff, kOne_GrBlendCoeff) + +/** + * When there is coverage and the dst coeff is Zero, the equation with f=coverage becomes: + * + * D' = f * S * srcCoeff + (1-f) * D + * + * To implement this formula, we output [f] for the secondary color and replace the HW dst coeff + * with IS2A. (Note that we can avoid dual source blending when Sa=1 by using ISA.) + * + * Xfer modes (Sa!=1): src, src-in, src-out + */ +#define COVERAGE_DST_COEFF_ZERO_FORMULA(SRC_COEFF) \ + INIT_BLEND_FORMULA(BlendFormula::kModulate_OutputType, \ + BlendFormula::kCoverage_OutputType, \ + kAdd_GrBlendEquation, SRC_COEFF, kIS2A_GrBlendCoeff) + +/** + * This table outlines the blend formulas we will use with each xfermode, with and without coverage, + * with and without an opaque input color. Optimization properties are deduced at compile time so we + * can make runtime decisions quickly. RGB coverage is not supported. + */ +static const BlendFormula gBlendTable[2][2][SkXfermode::kLastCoeffMode + 1] = { + + /*>> No coverage, input color unknown <<*/ {{ + + /* clear */ DST_CLEAR_FORMULA, + /* src */ COEFF_FORMULA( kOne_GrBlendCoeff, kZero_GrBlendCoeff), + /* dst */ NO_DST_WRITE_FORMULA, + /* src-over */ COEFF_FORMULA( kOne_GrBlendCoeff, kISA_GrBlendCoeff), + /* dst-over */ COEFF_FORMULA( kIDA_GrBlendCoeff, kOne_GrBlendCoeff), + /* src-in */ COEFF_FORMULA( kDA_GrBlendCoeff, kZero_GrBlendCoeff), + /* dst-in */ COEFF_FORMULA( kZero_GrBlendCoeff, kSA_GrBlendCoeff), + /* src-out */ COEFF_FORMULA( kIDA_GrBlendCoeff, kZero_GrBlendCoeff), + /* dst-out */ COEFF_FORMULA( kZero_GrBlendCoeff, kISA_GrBlendCoeff), + /* src-atop */ COEFF_FORMULA( kDA_GrBlendCoeff, kISA_GrBlendCoeff), + /* dst-atop */ COEFF_FORMULA( kIDA_GrBlendCoeff, kSA_GrBlendCoeff), + /* xor */ COEFF_FORMULA( kIDA_GrBlendCoeff, kISA_GrBlendCoeff), + /* plus */ COEFF_FORMULA( kOne_GrBlendCoeff, kOne_GrBlendCoeff), + /* modulate */ COEFF_FORMULA( kZero_GrBlendCoeff, kSC_GrBlendCoeff), + /* screen */ COEFF_FORMULA( kOne_GrBlendCoeff, kISC_GrBlendCoeff), + + }, /*>> Has coverage, input color unknown <<*/ { + + /* clear */ COVERAGE_SRC_COEFF_ZERO_FORMULA(BlendFormula::kCoverage_OutputType), + /* src */ COVERAGE_DST_COEFF_ZERO_FORMULA(kOne_GrBlendCoeff), + /* dst */ NO_DST_WRITE_FORMULA, + /* src-over */ COEFF_FORMULA( kOne_GrBlendCoeff, kISA_GrBlendCoeff), + /* dst-over */ COEFF_FORMULA( kIDA_GrBlendCoeff, kOne_GrBlendCoeff), + /* src-in */ COVERAGE_DST_COEFF_ZERO_FORMULA(kDA_GrBlendCoeff), + /* dst-in */ COVERAGE_SRC_COEFF_ZERO_FORMULA(BlendFormula::kISAModulate_OutputType), + /* src-out */ COVERAGE_DST_COEFF_ZERO_FORMULA(kIDA_GrBlendCoeff), + /* dst-out */ COEFF_FORMULA( kZero_GrBlendCoeff, kISA_GrBlendCoeff), + /* src-atop */ COEFF_FORMULA( kDA_GrBlendCoeff, kISA_GrBlendCoeff), + /* dst-atop */ COVERAGE_FORMULA(BlendFormula::kISAModulate_OutputType, kIDA_GrBlendCoeff), + /* xor */ COEFF_FORMULA( kIDA_GrBlendCoeff, kISA_GrBlendCoeff), + /* plus */ COEFF_FORMULA( kOne_GrBlendCoeff, kOne_GrBlendCoeff), + /* modulate */ COVERAGE_SRC_COEFF_ZERO_FORMULA(BlendFormula::kISCModulate_OutputType), + /* screen */ COEFF_FORMULA( kOne_GrBlendCoeff, kISC_GrBlendCoeff), + + }}, /*>> No coverage, input color opaque <<*/ {{ + + /* clear */ DST_CLEAR_FORMULA, + /* src */ COEFF_FORMULA( kOne_GrBlendCoeff, kZero_GrBlendCoeff), + /* dst */ NO_DST_WRITE_FORMULA, + /* src-over */ COEFF_FORMULA( kOne_GrBlendCoeff, kZero_GrBlendCoeff), + /* dst-over */ COEFF_FORMULA( kIDA_GrBlendCoeff, kOne_GrBlendCoeff), + /* src-in */ COEFF_FORMULA( kDA_GrBlendCoeff, kZero_GrBlendCoeff), + /* dst-in */ NO_DST_WRITE_FORMULA, + /* src-out */ COEFF_FORMULA( kIDA_GrBlendCoeff, kZero_GrBlendCoeff), + /* dst-out */ DST_CLEAR_FORMULA, + /* src-atop */ COEFF_FORMULA( kDA_GrBlendCoeff, kZero_GrBlendCoeff), + /* dst-atop */ COEFF_FORMULA( kIDA_GrBlendCoeff, kOne_GrBlendCoeff), + /* xor */ COEFF_FORMULA( kIDA_GrBlendCoeff, kZero_GrBlendCoeff), + /* plus */ COEFF_FORMULA( kOne_GrBlendCoeff, kOne_GrBlendCoeff), + /* modulate */ COEFF_FORMULA( kZero_GrBlendCoeff, kSC_GrBlendCoeff), + /* screen */ COEFF_FORMULA( kOne_GrBlendCoeff, kISC_GrBlendCoeff), + + }, /*>> Has coverage, input color opaque <<*/ { + + /* clear */ COVERAGE_SRC_COEFF_ZERO_FORMULA(BlendFormula::kCoverage_OutputType), + /* src */ COEFF_FORMULA( kOne_GrBlendCoeff, kISA_GrBlendCoeff), + /* dst */ NO_DST_WRITE_FORMULA, + /* src-over */ COEFF_FORMULA( kOne_GrBlendCoeff, kISA_GrBlendCoeff), + /* dst-over */ COEFF_FORMULA( kIDA_GrBlendCoeff, kOne_GrBlendCoeff), + /* src-in */ COEFF_FORMULA( kDA_GrBlendCoeff, kISA_GrBlendCoeff), + /* dst-in */ NO_DST_WRITE_FORMULA, + /* src-out */ COEFF_FORMULA( kIDA_GrBlendCoeff, kISA_GrBlendCoeff), + /* dst-out */ COVERAGE_SRC_COEFF_ZERO_FORMULA(BlendFormula::kCoverage_OutputType), + /* src-atop */ COEFF_FORMULA( kDA_GrBlendCoeff, kISA_GrBlendCoeff), + /* dst-atop */ COEFF_FORMULA( kIDA_GrBlendCoeff, kOne_GrBlendCoeff), + /* xor */ COEFF_FORMULA( kIDA_GrBlendCoeff, kISA_GrBlendCoeff), + /* plus */ COEFF_FORMULA( kOne_GrBlendCoeff, kOne_GrBlendCoeff), + /* modulate */ COVERAGE_SRC_COEFF_ZERO_FORMULA(BlendFormula::kISCModulate_OutputType), + /* screen */ COEFF_FORMULA( kOne_GrBlendCoeff, kISC_GrBlendCoeff), +}}}; + +static BlendFormula get_blend_formula(SkXfermode::Mode xfermode, + const GrProcOptInfo& colorPOI, + const GrProcOptInfo& coveragePOI) { + SkASSERT(xfermode >= 0 && xfermode <= SkXfermode::kLastCoeffMode); + SkASSERT(!coveragePOI.isFourChannelOutput()); + + return gBlendTable[colorPOI.isOpaque()][!coveragePOI.isSolidWhite()][xfermode]; +} + +/////////////////////////////////////////////////////////////////////////////// + +class PorterDuffXferProcessor : public GrXferProcessor { +public: + static GrXferProcessor* Create(BlendFormula blendFormula) { + return SkNEW_ARGS(PorterDuffXferProcessor, (blendFormula)); + } + + const char* name() const override { return "Porter Duff"; } + bool hasSecondaryOutput() const override { return fBlendFormula.hasSecondaryOutput(); } + + GrGLXferProcessor* createGLInstance() const override; + + BlendFormula getBlendFormula() const { return fBlendFormula; } private: - PorterDuffXferProcessor(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend, GrColor constant, - const DstTexture*, bool willReadDstColor); + PorterDuffXferProcessor(BlendFormula blendFormula) : fBlendFormula(blendFormula) { + this->initClassID<PorterDuffXferProcessor>(); + } GrXferProcessor::OptFlags onGetOptimizations(const GrProcOptInfo& colorPOI, const GrProcOptInfo& coveragePOI, @@ -100,204 +326,100 @@ private: void onGetGLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const override; void onGetBlendInfo(GrXferProcessor::BlendInfo* blendInfo) const override { - if (!this->willReadDstColor()) { - blendInfo->fSrcBlend = fSrcBlend; - blendInfo->fDstBlend = fDstBlend; - } else { - blendInfo->fSrcBlend = kOne_GrBlendCoeff; - blendInfo->fDstBlend = kZero_GrBlendCoeff; - } - blendInfo->fBlendConstant = fBlendConstant; + blendInfo->fEquation = fBlendFormula.fBlendEquation; + blendInfo->fSrcBlend = fBlendFormula.fSrcCoeff; + blendInfo->fDstBlend = fBlendFormula.fDstCoeff; + blendInfo->fWriteColor = fBlendFormula.modifiesDst(); } bool onIsEqual(const GrXferProcessor& xpBase) const override { const PorterDuffXferProcessor& xp = xpBase.cast<PorterDuffXferProcessor>(); - if (fSrcBlend != xp.fSrcBlend || - fDstBlend != xp.fDstBlend || - fBlendConstant != xp.fBlendConstant || - fPrimaryOutputType != xp.fPrimaryOutputType || - fSecondaryOutputType != xp.fSecondaryOutputType) { - return false; - } - return true; + return fBlendFormula == xp.fBlendFormula; } - GrXferProcessor::OptFlags internalGetOptimizations(const GrProcOptInfo& colorPOI, - const GrProcOptInfo& coveragePOI, - bool doesStencilWrite); - - void calcOutputTypes(GrXferProcessor::OptFlags blendOpts, const GrCaps& caps, - bool hasSolidCoverage); - - GrBlendCoeff fSrcBlend; - GrBlendCoeff fDstBlend; - GrColor fBlendConstant; - PrimaryOutputType fPrimaryOutputType; - SecondaryOutputType fSecondaryOutputType; + const BlendFormula fBlendFormula; typedef GrXferProcessor INHERITED; }; /////////////////////////////////////////////////////////////////////////////// -bool append_porterduff_term(GrGLXPFragmentBuilder* fsBuilder, GrBlendCoeff coeff, - const char* colorName, const char* srcColorName, - const char* dstColorName, bool hasPrevious) { - if (kZero_GrBlendCoeff == coeff) { - return hasPrevious; - } else { - if (hasPrevious) { - fsBuilder->codeAppend(" + "); - } - fsBuilder->codeAppendf("%s", colorName); - switch (coeff) { - case kOne_GrBlendCoeff: - break; - case kSC_GrBlendCoeff: - fsBuilder->codeAppendf(" * %s", srcColorName); - break; - case kISC_GrBlendCoeff: - fsBuilder->codeAppendf(" * (vec4(1.0) - %s)", srcColorName); - break; - case kDC_GrBlendCoeff: - fsBuilder->codeAppendf(" * %s", dstColorName); - break; - case kIDC_GrBlendCoeff: - fsBuilder->codeAppendf(" * (vec4(1.0) - %s)", dstColorName); - break; - case kSA_GrBlendCoeff: - fsBuilder->codeAppendf(" * %s.a", srcColorName); - break; - case kISA_GrBlendCoeff: - fsBuilder->codeAppendf(" * (1.0 - %s.a)", srcColorName); - break; - case kDA_GrBlendCoeff: - fsBuilder->codeAppendf(" * %s.a", dstColorName); - break; - case kIDA_GrBlendCoeff: - fsBuilder->codeAppendf(" * (1.0 - %s.a)", dstColorName); - break; - default: - SkFAIL("Unsupported Blend Coeff"); - } - return true; +static void append_color_output(const PorterDuffXferProcessor& xp, GrGLXPFragmentBuilder* fsBuilder, + BlendFormula::OutputType outputType, const char* output, + const char* inColor, const char* inCoverage) { + switch (outputType) { + case BlendFormula::kNone_OutputType: + fsBuilder->codeAppendf("%s = vec4(0.0);", output); + break; + case BlendFormula::kCoverage_OutputType: + fsBuilder->codeAppendf("%s = %s;", + output, xp.readsCoverage() ? inCoverage : "vec4(1.0)"); + break; + case BlendFormula::kModulate_OutputType: + if (xp.readsCoverage()) { + fsBuilder->codeAppendf("%s = %s * %s;", output, inColor, inCoverage); + } else { + fsBuilder->codeAppendf("%s = %s;", output, inColor); + } + break; + case BlendFormula::kISAModulate_OutputType: + if (xp.readsCoverage()) { + fsBuilder->codeAppendf("%s = (1.0 - %s.a) * %s;", output, inColor, inCoverage); + } else { + fsBuilder->codeAppendf("%s = vec4(1.0 - %s.a);", output, inColor); + } + break; + case BlendFormula::kISCModulate_OutputType: + if (xp.readsCoverage()) { + fsBuilder->codeAppendf("%s = (vec4(1.0) - %s) * %s;", output, inColor, inCoverage); + } else { + fsBuilder->codeAppendf("%s = vec4(1.0) - %s;", output, inColor); + } + break; + default: + SkFAIL("Unsupported output type."); + break; } } class GLPorterDuffXferProcessor : public GrGLXferProcessor { public: - GLPorterDuffXferProcessor(const GrProcessor&) {} - - virtual ~GLPorterDuffXferProcessor() {} - - static void GenKey(const GrProcessor& processor, const GrGLSLCaps& caps, - GrProcessorKeyBuilder* b) { + static void GenKey(const GrProcessor& processor, GrProcessorKeyBuilder* b) { const PorterDuffXferProcessor& xp = processor.cast<PorterDuffXferProcessor>(); - b->add32(xp.primaryOutputType()); - b->add32(xp.secondaryOutputType()); - if (xp.willReadDstColor()) { - b->add32(xp.getSrcBlend()); - b->add32(xp.getDstBlend()); - } + b->add32(SkToInt(xp.readsCoverage()) | + (xp.getBlendFormula().fPrimaryOutputType << 1) | + (xp.getBlendFormula().fSecondaryOutputType << 4)); + GR_STATIC_ASSERT(BlendFormula::kLast_OutputType < 8); }; private: void onEmitCode(const EmitArgs& args) override { const PorterDuffXferProcessor& xp = args.fXP.cast<PorterDuffXferProcessor>(); GrGLXPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder(); - if (PorterDuffXferProcessor::kCustom_PrimaryOutputType != xp.primaryOutputType()) { - SkASSERT(!xp.willReadDstColor()); - switch(xp.secondaryOutputType()) { - case PorterDuffXferProcessor::kNone_SecondaryOutputType: - break; - case PorterDuffXferProcessor::kCoverage_SecondaryOutputType: - fsBuilder->codeAppendf("%s = %s;", args.fOutputSecondary, - args.fInputCoverage); - break; - case PorterDuffXferProcessor::kCoverageISA_SecondaryOutputType: - fsBuilder->codeAppendf("%s = (1.0 - %s.a) * %s;", - args.fOutputSecondary, args.fInputColor, - args.fInputCoverage); - break; - case PorterDuffXferProcessor::kCoverageISC_SecondaryOutputType: - fsBuilder->codeAppendf("%s = (vec4(1.0) - %s) * %s;", - args.fOutputSecondary, args.fInputColor, - args.fInputCoverage); - break; - default: - SkFAIL("Unexpected Secondary Output"); - } - switch (xp.primaryOutputType()) { - case PorterDuffXferProcessor::kNone_PrimaryOutputType: - fsBuilder->codeAppendf("%s = vec4(0);", args.fOutputPrimary); - break; - case PorterDuffXferProcessor::kColor_PrimaryOutputType: - fsBuilder->codeAppendf("%s = %s;", args.fOutputPrimary, args.fInputColor); - break; - case PorterDuffXferProcessor::kCoverage_PrimaryOutputType: - fsBuilder->codeAppendf("%s = %s;", args.fOutputPrimary, args.fInputCoverage); - break; - case PorterDuffXferProcessor::kModulate_PrimaryOutputType: - fsBuilder->codeAppendf("%s = %s * %s;", args.fOutputPrimary, args.fInputColor, - args.fInputCoverage); - break; - default: - SkFAIL("Unexpected Primary Output"); - } - } else { - SkASSERT(xp.willReadDstColor()); - - const char* dstColor = fsBuilder->dstColor(); - - fsBuilder->codeAppend("vec4 colorBlend ="); - // append src blend - bool didAppend = append_porterduff_term(fsBuilder, xp.getSrcBlend(), - args.fInputColor, args.fInputColor, - dstColor, false); - // append dst blend - SkAssertResult(append_porterduff_term(fsBuilder, xp.getDstBlend(), - dstColor, args.fInputColor, - dstColor, didAppend)); - fsBuilder->codeAppend(";"); - - fsBuilder->codeAppendf("%s = %s * colorBlend + (vec4(1.0) - %s) * %s;", - args.fOutputPrimary, args.fInputCoverage, args.fInputCoverage, - dstColor); + BlendFormula blendFormula = xp.getBlendFormula(); + if (blendFormula.hasSecondaryOutput()) { + append_color_output(xp, fsBuilder, blendFormula.fSecondaryOutputType, + args.fOutputSecondary, args.fInputColor, args.fInputCoverage); } + append_color_output(xp, fsBuilder, blendFormula.fPrimaryOutputType, + args.fOutputPrimary, args.fInputColor, args.fInputCoverage); } - void onSetData(const GrGLProgramDataManager&, const GrXferProcessor&) override {}; + void onSetData(const GrGLProgramDataManager&, const GrXferProcessor&) override {} typedef GrGLXferProcessor INHERITED; }; /////////////////////////////////////////////////////////////////////////////// -PorterDuffXferProcessor::PorterDuffXferProcessor(GrBlendCoeff srcBlend, - GrBlendCoeff dstBlend, - GrColor constant, - const DstTexture* dstTexture, - bool willReadDstColor) - : INHERITED(dstTexture, willReadDstColor) - , fSrcBlend(srcBlend) - , fDstBlend(dstBlend) - , fBlendConstant(constant) - , fPrimaryOutputType(kModulate_PrimaryOutputType) - , fSecondaryOutputType(kNone_SecondaryOutputType) { - this->initClassID<PorterDuffXferProcessor>(); -} - -PorterDuffXferProcessor::~PorterDuffXferProcessor() { -} - -void PorterDuffXferProcessor::onGetGLProcessorKey(const GrGLSLCaps& caps, +void PorterDuffXferProcessor::onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder* b) const { - GLPorterDuffXferProcessor::GenKey(*this, caps, b); + GLPorterDuffXferProcessor::GenKey(*this, b); } GrGLXferProcessor* PorterDuffXferProcessor::createGLInstance() const { - return SkNEW_ARGS(GLPorterDuffXferProcessor, (*this)); + return SkNEW(GLPorterDuffXferProcessor); } GrXferProcessor::OptFlags @@ -306,168 +428,167 @@ PorterDuffXferProcessor::onGetOptimizations(const GrProcOptInfo& colorPOI, bool doesStencilWrite, GrColor* overrideColor, const GrCaps& caps) { - GrXferProcessor::OptFlags optFlags = this->internalGetOptimizations(colorPOI, - coveragePOI, - doesStencilWrite); - this->calcOutputTypes(optFlags, caps, coveragePOI.isSolidWhite()); + GrXferProcessor::OptFlags optFlags = GrXferProcessor::kNone_Opt; + if (!fBlendFormula.modifiesDst()) { + if (!doesStencilWrite) { + optFlags |= GrXferProcessor::kSkipDraw_OptFlag; + } + optFlags |= (GrXferProcessor::kIgnoreColor_OptFlag | + GrXferProcessor::kIgnoreCoverage_OptFlag | + GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag); + } else { + if (!fBlendFormula.usesInputColor()) { + optFlags |= GrXferProcessor::kIgnoreColor_OptFlag; + } + if (coveragePOI.isSolidWhite()) { + optFlags |= GrXferProcessor::kIgnoreCoverage_OptFlag; + } + if (colorPOI.allStagesMultiplyInput() && fBlendFormula.canTweakAlphaForCoverage()) { + optFlags |= GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag; + } + } return optFlags; } -void PorterDuffXferProcessor::calcOutputTypes(GrXferProcessor::OptFlags optFlags, - const GrCaps& caps, - bool hasSolidCoverage) { - if (this->willReadDstColor()) { - fPrimaryOutputType = kCustom_PrimaryOutputType; - return; +/////////////////////////////////////////////////////////////////////////////// + +class ShaderPDXferProcessor : public GrXferProcessor { +public: + static GrXferProcessor* Create(SkXfermode::Mode xfermode, const DstTexture* dstTexture) { + return SkNEW_ARGS(ShaderPDXferProcessor, (xfermode, dstTexture)); } - if (optFlags & kIgnoreColor_OptFlag) { - if (optFlags & kIgnoreCoverage_OptFlag) { - fPrimaryOutputType = kNone_PrimaryOutputType; - return; - } else { - fPrimaryOutputType = kCoverage_PrimaryOutputType; - return; - } - } else if (optFlags & kIgnoreCoverage_OptFlag) { - fPrimaryOutputType = kColor_PrimaryOutputType; - return; + const char* name() const override { return "Porter Duff Shader"; } + bool hasSecondaryOutput() const override { return false; } + + GrGLXferProcessor* createGLInstance() const override; + + SkXfermode::Mode getXfermode() const { return fXfermode; } + +private: + ShaderPDXferProcessor(SkXfermode::Mode xfermode, const DstTexture* dstTexture) + : INHERITED(dstTexture, true) + , fXfermode(xfermode) { + this->initClassID<ShaderPDXferProcessor>(); } - // If we do have coverage determine whether it matters. Dual source blending is expensive so - // we don't do it if we are doing coverage drawing. If we aren't then We always do dual source - // blending if we have any effective coverage stages OR the geometry processor doesn't emits - // solid coverage. - if (!(optFlags & kSetCoverageDrawing_OptFlag) && !hasSolidCoverage) { - if (caps.shaderCaps()->dualSourceBlendingSupport()) { - if (kZero_GrBlendCoeff == fDstBlend) { - // write the coverage value to second color - fSecondaryOutputType = kCoverage_SecondaryOutputType; - fDstBlend = kIS2C_GrBlendCoeff; - } else if (kSA_GrBlendCoeff == fDstBlend) { - // SA dst coeff becomes 1-(1-SA)*coverage when dst is partially covered. - fSecondaryOutputType = kCoverageISA_SecondaryOutputType; - fDstBlend = kIS2C_GrBlendCoeff; - } else if (kSC_GrBlendCoeff == fDstBlend) { - // SA dst coeff becomes 1-(1-SA)*coverage when dst is partially covered. - fSecondaryOutputType = kCoverageISC_SecondaryOutputType; - fDstBlend = kIS2C_GrBlendCoeff; - } - } + GrXferProcessor::OptFlags onGetOptimizations(const GrProcOptInfo&, const GrProcOptInfo&, + bool, GrColor*, const GrCaps&) override { + return kNone_Opt; } -} -GrXferProcessor::OptFlags -PorterDuffXferProcessor::internalGetOptimizations(const GrProcOptInfo& colorPOI, - const GrProcOptInfo& coveragePOI, - bool doesStencilWrite) { - if (this->willReadDstColor()) { - return GrXferProcessor::kNone_Opt; + void onGetGLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const override; + + bool onIsEqual(const GrXferProcessor& xpBase) const override { + const ShaderPDXferProcessor& xp = xpBase.cast<ShaderPDXferProcessor>(); + return fXfermode == xp.fXfermode; } - bool srcAIsOne = colorPOI.isOpaque(); - bool hasCoverage = !coveragePOI.isSolidWhite(); - - bool dstCoeffIsOne = kOne_GrBlendCoeff == fDstBlend || - (kSA_GrBlendCoeff == fDstBlend && srcAIsOne); - bool dstCoeffIsZero = kZero_GrBlendCoeff == fDstBlend || - (kISA_GrBlendCoeff == fDstBlend && srcAIsOne); - - // When coeffs are (0,1) there is no reason to draw at all, unless - // stenciling is enabled. Having color writes disabled is effectively - // (0,1). - if ((kZero_GrBlendCoeff == fSrcBlend && dstCoeffIsOne)) { - if (doesStencilWrite) { - return GrXferProcessor::kIgnoreColor_OptFlag | - GrXferProcessor::kSetCoverageDrawing_OptFlag; - } else { - fDstBlend = kOne_GrBlendCoeff; - return GrXferProcessor::kSkipDraw_OptFlag; + const SkXfermode::Mode fXfermode; + + typedef GrXferProcessor INHERITED; +}; + +/////////////////////////////////////////////////////////////////////////////// + +static bool append_porterduff_term(GrGLXPFragmentBuilder* fsBuilder, SkXfermode::Coeff coeff, + const char* colorName, const char* srcColorName, + const char* dstColorName, bool hasPrevious) { + if (SkXfermode::kZero_Coeff == coeff) { + return hasPrevious; + } else { + if (hasPrevious) { + fsBuilder->codeAppend(" + "); + } + fsBuilder->codeAppendf("%s", colorName); + switch (coeff) { + case SkXfermode::kOne_Coeff: + break; + case SkXfermode::kSC_Coeff: + fsBuilder->codeAppendf(" * %s", srcColorName); + break; + case SkXfermode::kISC_Coeff: + fsBuilder->codeAppendf(" * (vec4(1.0) - %s)", srcColorName); + break; + case SkXfermode::kDC_Coeff: + fsBuilder->codeAppendf(" * %s", dstColorName); + break; + case SkXfermode::kIDC_Coeff: + fsBuilder->codeAppendf(" * (vec4(1.0) - %s)", dstColorName); + break; + case SkXfermode::kSA_Coeff: + fsBuilder->codeAppendf(" * %s.a", srcColorName); + break; + case SkXfermode::kISA_Coeff: + fsBuilder->codeAppendf(" * (1.0 - %s.a)", srcColorName); + break; + case SkXfermode::kDA_Coeff: + fsBuilder->codeAppendf(" * %s.a", dstColorName); + break; + case SkXfermode::kIDA_Coeff: + fsBuilder->codeAppendf(" * (1.0 - %s.a)", dstColorName); + break; + default: + SkFAIL("Unsupported Blend Coeff"); } + return true; } +} - // if we don't have coverage we can check whether the dst - // has to read at all. If not, we'll disable blending. - if (!hasCoverage) { - if (dstCoeffIsZero) { - if (kOne_GrBlendCoeff == fSrcBlend) { - // if there is no coverage and coeffs are (1,0) then we - // won't need to read the dst at all, it gets replaced by src - fDstBlend = kZero_GrBlendCoeff; - return GrXferProcessor::kNone_Opt | - GrXferProcessor::kIgnoreCoverage_OptFlag; - } else if (kZero_GrBlendCoeff == fSrcBlend) { - // if the op is "clear" then we don't need to emit a color - // or blend, just write transparent black into the dst. - fSrcBlend = kOne_GrBlendCoeff; - fDstBlend = kZero_GrBlendCoeff; - return GrXferProcessor::kIgnoreColor_OptFlag | - GrXferProcessor::kIgnoreCoverage_OptFlag; - } - } - return GrXferProcessor::kIgnoreCoverage_OptFlag; +class GLShaderPDXferProcessor : public GrGLXferProcessor { +public: + static void GenKey(const GrProcessor& processor, GrProcessorKeyBuilder* b) { + const ShaderPDXferProcessor& xp = processor.cast<ShaderPDXferProcessor>(); + b->add32(xp.getXfermode()); } - // check whether coverage can be safely rolled into alpha - // of if we can skip color computation and just emit coverage - if (can_tweak_alpha_for_coverage(fDstBlend)) { - if (colorPOI.allStagesMultiplyInput()) { - return GrXferProcessor::kSetCoverageDrawing_OptFlag | - GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag; - } else { - return GrXferProcessor::kSetCoverageDrawing_OptFlag; +private: + void onEmitCode(const EmitArgs& args) override { + const ShaderPDXferProcessor& xp = args.fXP.cast<ShaderPDXferProcessor>(); + GrGLXPFragmentBuilder* fsBuilder = args.fPB->getFragmentShaderBuilder(); - } + SkXfermode::Coeff srcCoeff, dstCoeff; + SkXfermode::ModeAsCoeff(xp.getXfermode(), &srcCoeff, &dstCoeff); + + const char* dstColor = fsBuilder->dstColor(); + + fsBuilder->codeAppend("vec4 colorBlend ="); + // append src blend + bool didAppend = append_porterduff_term(fsBuilder, srcCoeff, + args.fInputColor, args.fInputColor, + dstColor, false); + // append dst blend + SkAssertResult(append_porterduff_term(fsBuilder, dstCoeff, + dstColor, args.fInputColor, + dstColor, didAppend)); + fsBuilder->codeAppend(";"); + + fsBuilder->codeAppendf("%s = %s * colorBlend + (vec4(1.0) - %s) * %s;", + args.fOutputPrimary, args.fInputCoverage, args.fInputCoverage, + dstColor); } - if (dstCoeffIsZero) { - if (kZero_GrBlendCoeff == fSrcBlend) { - // the source color is not included in the blend - // the dst coeff is effectively zero so blend works out to: - // (c)(0)D + (1-c)D = (1-c)D. - fDstBlend = kISA_GrBlendCoeff; - return GrXferProcessor::kIgnoreColor_OptFlag | - GrXferProcessor::kSetCoverageDrawing_OptFlag; - } else if (srcAIsOne) { - // the dst coeff is effectively zero so blend works out to: - // cS + (c)(0)D + (1-c)D = cS + (1-c)D. - // If Sa is 1 then we can replace Sa with c - // and set dst coeff to 1-Sa. - fDstBlend = kISA_GrBlendCoeff; - if (colorPOI.allStagesMultiplyInput()) { - return GrXferProcessor::kSetCoverageDrawing_OptFlag | - GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag; - } else { - return GrXferProcessor::kSetCoverageDrawing_OptFlag; - } - } - } else if (dstCoeffIsOne) { - // the dst coeff is effectively one so blend works out to: - // cS + (c)(1)D + (1-c)D = cS + D. - fDstBlend = kOne_GrBlendCoeff; - if (colorPOI.allStagesMultiplyInput()) { - return GrXferProcessor::kSetCoverageDrawing_OptFlag | - GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag; - } else { - return GrXferProcessor::kSetCoverageDrawing_OptFlag; + void onSetData(const GrGLProgramDataManager&, const GrXferProcessor&) override {} - } - return GrXferProcessor::kSetCoverageDrawing_OptFlag; - } + typedef GrGLXferProcessor INHERITED; +}; + +/////////////////////////////////////////////////////////////////////////////// - return GrXferProcessor::kNone_Opt; +void ShaderPDXferProcessor::onGetGLProcessorKey(const GrGLSLCaps&, + GrProcessorKeyBuilder* b) const { + GLShaderPDXferProcessor::GenKey(*this, b); } -bool PorterDuffXferProcessor::hasSecondaryOutput() const { - return kNone_SecondaryOutputType != fSecondaryOutputType; +GrGLXferProcessor* ShaderPDXferProcessor::createGLInstance() const { + return SkNEW(GLShaderPDXferProcessor); } /////////////////////////////////////////////////////////////////////////////// class PDLCDXferProcessor : public GrXferProcessor { public: - static GrXferProcessor* Create(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend, - const GrProcOptInfo& colorPOI); + static GrXferProcessor* Create(SkXfermode::Mode xfermode, const GrProcOptInfo& colorPOI); ~PDLCDXferProcessor() override; @@ -541,9 +662,9 @@ PDLCDXferProcessor::PDLCDXferProcessor(GrColor blendConstant, uint8_t alpha) this->initClassID<PDLCDXferProcessor>(); } -GrXferProcessor* PDLCDXferProcessor::Create(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend, +GrXferProcessor* PDLCDXferProcessor::Create(SkXfermode::Mode xfermode, const GrProcOptInfo& colorPOI) { - if (kOne_GrBlendCoeff != srcBlend || kISA_GrBlendCoeff != dstBlend) { + if (SkXfermode::kSrcOver_Mode != xfermode) { return NULL; } @@ -585,91 +706,40 @@ PDLCDXferProcessor::onGetOptimizations(const GrProcOptInfo& colorPOI, } /////////////////////////////////////////////////////////////////////////////// -GrPorterDuffXPFactory::GrPorterDuffXPFactory(GrBlendCoeff src, GrBlendCoeff dst) - : fSrcCoeff(src), fDstCoeff(dst) { + +GrPorterDuffXPFactory::GrPorterDuffXPFactory(SkXfermode::Mode xfermode) + : fXfermode(xfermode) { this->initClassID<GrPorterDuffXPFactory>(); } -GrXPFactory* GrPorterDuffXPFactory::Create(SkXfermode::Mode mode) { - switch (mode) { - case SkXfermode::kClear_Mode: { - static GrPorterDuffXPFactory gClearPDXPF(kZero_GrBlendCoeff, kZero_GrBlendCoeff); - return SkRef(&gClearPDXPF); - break; - } - case SkXfermode::kSrc_Mode: { - static GrPorterDuffXPFactory gSrcPDXPF(kOne_GrBlendCoeff, kZero_GrBlendCoeff); - return SkRef(&gSrcPDXPF); - break; - } - case SkXfermode::kDst_Mode: { - static GrPorterDuffXPFactory gDstPDXPF(kZero_GrBlendCoeff, kOne_GrBlendCoeff); - return SkRef(&gDstPDXPF); - break; - } - case SkXfermode::kSrcOver_Mode: { - static GrPorterDuffXPFactory gSrcOverPDXPF(kOne_GrBlendCoeff, kISA_GrBlendCoeff); - return SkRef(&gSrcOverPDXPF); - break; - } - case SkXfermode::kDstOver_Mode: { - static GrPorterDuffXPFactory gDstOverPDXPF(kIDA_GrBlendCoeff, kOne_GrBlendCoeff); - return SkRef(&gDstOverPDXPF); - break; - } - case SkXfermode::kSrcIn_Mode: { - static GrPorterDuffXPFactory gSrcInPDXPF(kDA_GrBlendCoeff, kZero_GrBlendCoeff); - return SkRef(&gSrcInPDXPF); - break; - } - case SkXfermode::kDstIn_Mode: { - static GrPorterDuffXPFactory gDstInPDXPF(kZero_GrBlendCoeff, kSA_GrBlendCoeff); - return SkRef(&gDstInPDXPF); - break; - } - case SkXfermode::kSrcOut_Mode: { - static GrPorterDuffXPFactory gSrcOutPDXPF(kIDA_GrBlendCoeff, kZero_GrBlendCoeff); - return SkRef(&gSrcOutPDXPF); - break; - } - case SkXfermode::kDstOut_Mode: { - static GrPorterDuffXPFactory gDstOutPDXPF(kZero_GrBlendCoeff, kISA_GrBlendCoeff); - return SkRef(&gDstOutPDXPF); - break; - } - case SkXfermode::kSrcATop_Mode: { - static GrPorterDuffXPFactory gSrcATopPDXPF(kDA_GrBlendCoeff, kISA_GrBlendCoeff); - return SkRef(&gSrcATopPDXPF); - break; - } - case SkXfermode::kDstATop_Mode: { - static GrPorterDuffXPFactory gDstATopPDXPF(kIDA_GrBlendCoeff, kSA_GrBlendCoeff); - return SkRef(&gDstATopPDXPF); - break; - } - case SkXfermode::kXor_Mode: { - static GrPorterDuffXPFactory gXorPDXPF(kIDA_GrBlendCoeff, kISA_GrBlendCoeff); - return SkRef(&gXorPDXPF); - break; - } - case SkXfermode::kPlus_Mode: { - static GrPorterDuffXPFactory gPlusPDXPF(kOne_GrBlendCoeff, kOne_GrBlendCoeff); - return SkRef(&gPlusPDXPF); - break; - } - case SkXfermode::kModulate_Mode: { - static GrPorterDuffXPFactory gModulatePDXPF(kZero_GrBlendCoeff, kSC_GrBlendCoeff); - return SkRef(&gModulatePDXPF); - break; - } - case SkXfermode::kScreen_Mode: { - static GrPorterDuffXPFactory gScreenPDXPF(kOne_GrBlendCoeff, kISC_GrBlendCoeff); - return SkRef(&gScreenPDXPF); - break; - } - default: - return NULL; +GrXPFactory* GrPorterDuffXPFactory::Create(SkXfermode::Mode xfermode) { + static GrPorterDuffXPFactory gClearPDXPF(SkXfermode::kClear_Mode); + static GrPorterDuffXPFactory gSrcPDXPF(SkXfermode::kSrc_Mode); + static GrPorterDuffXPFactory gDstPDXPF(SkXfermode::kDst_Mode); + static GrPorterDuffXPFactory gSrcOverPDXPF(SkXfermode::kSrcOver_Mode); + static GrPorterDuffXPFactory gDstOverPDXPF(SkXfermode::kDstOver_Mode); + static GrPorterDuffXPFactory gSrcInPDXPF(SkXfermode::kSrcIn_Mode); + static GrPorterDuffXPFactory gDstInPDXPF(SkXfermode::kDstIn_Mode); + static GrPorterDuffXPFactory gSrcOutPDXPF(SkXfermode::kSrcOut_Mode); + static GrPorterDuffXPFactory gDstOutPDXPF(SkXfermode::kDstOut_Mode); + static GrPorterDuffXPFactory gSrcATopPDXPF(SkXfermode::kSrcATop_Mode); + static GrPorterDuffXPFactory gDstATopPDXPF(SkXfermode::kDstATop_Mode); + static GrPorterDuffXPFactory gXorPDXPF(SkXfermode::kXor_Mode); + static GrPorterDuffXPFactory gPlusPDXPF(SkXfermode::kPlus_Mode); + static GrPorterDuffXPFactory gModulatePDXPF(SkXfermode::kModulate_Mode); + static GrPorterDuffXPFactory gScreenPDXPF(SkXfermode::kScreen_Mode); + + static GrPorterDuffXPFactory* gFactories[] = { + &gClearPDXPF, &gSrcPDXPF, &gDstPDXPF, &gSrcOverPDXPF, &gDstOverPDXPF, &gSrcInPDXPF, + &gDstInPDXPF, &gSrcOutPDXPF, &gDstOutPDXPF, &gSrcATopPDXPF, &gDstATopPDXPF, &gXorPDXPF, + &gPlusPDXPF, &gModulatePDXPF, &gScreenPDXPF + }; + GR_STATIC_ASSERT(SK_ARRAY_COUNT(gFactories) == SkXfermode::kLastCoeffMode + 1); + + if (xfermode < 0 || xfermode > SkXfermode::kLastCoeffMode) { + return NULL; } + return SkRef(gFactories[xfermode]); } GrXferProcessor* @@ -678,16 +748,22 @@ GrPorterDuffXPFactory::onCreateXferProcessor(const GrCaps& caps, const GrProcOptInfo& covPOI, const DstTexture* dstTexture) const { if (covPOI.isFourChannelOutput()) { - return PDLCDXferProcessor::Create(fSrcCoeff, fDstCoeff, colorPOI); - } else { - return PorterDuffXferProcessor::Create(fSrcCoeff, fDstCoeff, 0, dstTexture, - this->willReadDstColor(caps, colorPOI, covPOI)); + SkASSERT(!dstTexture || !dstTexture->texture()); + return PDLCDXferProcessor::Create(fXfermode, colorPOI); + } + + BlendFormula blendFormula = get_blend_formula(fXfermode, colorPOI, covPOI); + if (blendFormula.hasSecondaryOutput() && !caps.shaderCaps()->dualSourceBlendingSupport()) { + return ShaderPDXferProcessor::Create(fXfermode, dstTexture); } + + SkASSERT(!dstTexture || !dstTexture->texture()); + return PorterDuffXferProcessor::Create(blendFormula); } bool GrPorterDuffXPFactory::supportsRGBCoverage(GrColor /*knownColor*/, uint32_t knownColorFlags) const { - if (kOne_GrBlendCoeff == fSrcCoeff && kISA_GrBlendCoeff == fDstCoeff && + if (SkXfermode::kSrcOver_Mode == fXfermode && kRGBA_GrColorComponentFlags == knownColorFlags) { return true; } @@ -697,103 +773,50 @@ bool GrPorterDuffXPFactory::supportsRGBCoverage(GrColor /*knownColor*/, void GrPorterDuffXPFactory::getInvariantOutput(const GrProcOptInfo& colorPOI, const GrProcOptInfo& coveragePOI, GrXPFactory::InvariantOutput* output) const { - if (!coveragePOI.isSolidWhite()) { - output->fWillBlendWithDst = true; - output->fBlendedColorFlags = 0; - return; - } + output->fWillBlendWithDst = true; + output->fBlendedColorFlags = kNone_GrColorComponentFlags; - GrBlendCoeff srcCoeff = fSrcCoeff; - GrBlendCoeff dstCoeff = fDstCoeff; - - // TODO: figure out to merge this simplify with other current optimization code paths and - // eventually remove from GrBlend - GrSimplifyBlend(&srcCoeff, &dstCoeff, colorPOI.color(), colorPOI.validFlags(), - 0, 0, 0); - - if (GrBlendCoeffRefsDst(srcCoeff)) { - output->fWillBlendWithDst = true; - output->fBlendedColorFlags = 0; + // The blend table doesn't support LCD coverage, but these formulas never have invariant output. + if (coveragePOI.isFourChannelOutput()) { return; } - if (kZero_GrBlendCoeff != dstCoeff) { - bool srcAIsOne = colorPOI.isOpaque(); - if (kISA_GrBlendCoeff != dstCoeff || !srcAIsOne) { - output->fWillBlendWithDst = true; - } - output->fBlendedColorFlags = 0; + const BlendFormula& blendFormula = get_blend_formula(fXfermode, colorPOI, coveragePOI); + if (blendFormula.usesDstColor()) { return; } - switch (srcCoeff) { + SkASSERT(coveragePOI.isSolidWhite()); + SkASSERT(kAdd_GrBlendEquation == blendFormula.fBlendEquation); + + output->fWillBlendWithDst = false; + + switch (blendFormula.fSrcCoeff) { case kZero_GrBlendCoeff: output->fBlendedColor = 0; output->fBlendedColorFlags = kRGBA_GrColorComponentFlags; - break; + return; case kOne_GrBlendCoeff: output->fBlendedColor = colorPOI.color(); output->fBlendedColorFlags = colorPOI.validFlags(); - break; - - // The src coeff should never refer to the src and if it refers to dst then opaque - // should have been false. - case kSC_GrBlendCoeff: - case kISC_GrBlendCoeff: - case kDC_GrBlendCoeff: - case kIDC_GrBlendCoeff: - case kSA_GrBlendCoeff: - case kISA_GrBlendCoeff: - case kDA_GrBlendCoeff: - case kIDA_GrBlendCoeff: - default: - SkFAIL("srcCoeff should not refer to src or dst."); - break; + return; - // TODO: update this once GrPaint actually has a const color. - case kConstC_GrBlendCoeff: - case kIConstC_GrBlendCoeff: - case kConstA_GrBlendCoeff: - case kIConstA_GrBlendCoeff: - output->fBlendedColorFlags = 0; - break; + default: return; } - - output->fWillBlendWithDst = false; } bool GrPorterDuffXPFactory::willReadDstColor(const GrCaps& caps, const GrProcOptInfo& colorPOI, const GrProcOptInfo& coveragePOI) const { - // We can always blend correctly if we have dual source blending. - if (caps.shaderCaps()->dualSourceBlendingSupport()) { - return false; + if (coveragePOI.isFourChannelOutput()) { + return false; // The LCD XP never does a dst read. } - if (can_tweak_alpha_for_coverage(fDstCoeff)) { - return false; - } - - bool srcAIsOne = colorPOI.isOpaque(); - - if (kZero_GrBlendCoeff == fDstCoeff) { - if (kZero_GrBlendCoeff == fSrcCoeff || srcAIsOne) { - return false; - } - } - - // Reduces to: coeffS * (Cov*S) + D - if (kSA_GrBlendCoeff == fDstCoeff && srcAIsOne) { - return false; - } - - // We can always blend correctly if we have solid coverage. - if (coveragePOI.isSolidWhite()) { - return false; - } - - return true; + // We fallback on the shader XP when the blend formula would use dual source blending but we + // don't have support for it. + return !caps.shaderCaps()->dualSourceBlendingSupport() && + get_blend_formula(fXfermode, colorPOI, coveragePOI).hasSecondaryOutput(); } GR_DEFINE_XP_FACTORY_TEST(GrPorterDuffXPFactory); @@ -806,3 +829,15 @@ GrXPFactory* GrPorterDuffXPFactory::TestCreate(SkRandom* random, return GrPorterDuffXPFactory::Create(mode); } +void GrPorterDuffXPFactory::TestGetXPOutputTypes(const GrXferProcessor* xp, + int* outPrimary, + int* outSecondary) { + if (!!strcmp(xp->name(), "Porter Duff")) { + *outPrimary = *outSecondary = -1; + return; + } + BlendFormula blendFormula = static_cast<const PorterDuffXferProcessor*>(xp)->getBlendFormula(); + *outPrimary = blendFormula.fPrimaryOutputType; + *outSecondary = blendFormula.fSecondaryOutputType; +} + diff --git a/tests/GrPorterDuffTest.cpp b/tests/GrPorterDuffTest.cpp new file mode 100644 index 0000000000..314671200f --- /dev/null +++ b/tests/GrPorterDuffTest.cpp @@ -0,0 +1,1011 @@ +/* + * 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, 0, caps)); + TEST_ASSERT(!xpf->willNeedDstTexture(caps, colorPOI, covPOI)); + xpf->getInvariantOutput(colorPOI, covPOI, &fInvariantOutput); + fOptFlags = xp->getOptimizations(colorPOI, covPOI, false, 0, caps); + GetXPOutputTypes(xp, &fPrimaryOutputType, &fSecondaryOutputType); + xp->getBlendInfo(&fBlendInfo); + TEST_ASSERT(!xp->willReadDstColor()); + TEST_ASSERT(xp->hasSecondaryOutput() == GrBlendCoeffRefsSrc2(fBlendInfo.fDstBlend)); + } + + GrXPFactory::InvariantOutput fInvariantOutput; + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(0 == xpi.fInvariantOutput.fBlendedColor); + TEST_ASSERT(kRGBA_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(229 == GrColorUnpackR(xpi.fInvariantOutput.fBlendedColor)); + TEST_ASSERT(154 == GrColorUnpackB(xpi.fInvariantOutput.fBlendedColor)); + TEST_ASSERT((kR_GrColorComponentFlag | + kB_GrColorComponentFlag) == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(0 == xpi.fInvariantOutput.fBlendedColor); + TEST_ASSERT(kRGBA_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(82 == GrColorUnpackG(xpi.fInvariantOutput.fBlendedColor)); + TEST_ASSERT(255 == GrColorUnpackA(xpi.fInvariantOutput.fBlendedColor)); + TEST_ASSERT((kG_GrColorComponentFlag | + kA_GrColorComponentFlag) == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(82 == GrColorUnpackG(xpi.fInvariantOutput.fBlendedColor)); + TEST_ASSERT(255 == GrColorUnpackA(xpi.fInvariantOutput.fBlendedColor)); + TEST_ASSERT((kG_GrColorComponentFlag | + kA_GrColorComponentFlag) == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(0 == xpi.fInvariantOutput.fBlendedColor); + TEST_ASSERT(kRGBA_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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.fInvariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == xpi.fInvariantOutput.fBlendedColorFlags); + 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)); + + SkAutoTUnref<GrXferProcessor> xp(xpf->createXferProcessor(colorPOI, covPOI, 0, caps)); + if (!xp) { + ERRORF(reporter, "Failed to create an XP with LCD coverage."); + return; + } + + GrXPFactory::InvariantOutput invariantOutput; + xpf->getInvariantOutput(colorPOI, covPOI, &invariantOutput); + TEST_ASSERT(invariantOutput.fWillBlendWithDst); + TEST_ASSERT(kNone_GrColorComponentFlags == invariantOutput.fBlendedColorFlags); + + 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->getGpu()->caps(); + 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)); + SkAutoTUnref<GrXferProcessor> xp; + if (xpf->willNeedDstTexture(caps, colorPOI, covPOI)) { + xp.reset(xpf->createXferProcessor(colorPOI, covPOI, &fakeDstTexture, caps)); + } else { + xp.reset(xpf->createXferProcessor(colorPOI, covPOI, NULL, caps)); + } + 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 + |