/* * 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 "src/gpu/GrXferProcessor.h" #include "src/gpu/GrCaps.h" #include "src/gpu/GrPipeline.h" GrXferProcessor::GrXferProcessor(ClassID classID) : INHERITED(classID) , fWillReadDstColor(false) , fDstReadUsesMixedSamples(false) , fIsLCD(false) {} GrXferProcessor::GrXferProcessor(ClassID classID, bool willReadDstColor, bool hasMixedSamples, GrProcessorAnalysisCoverage coverage) : INHERITED(classID) , fWillReadDstColor(willReadDstColor) , fDstReadUsesMixedSamples(willReadDstColor && hasMixedSamples) , fIsLCD(GrProcessorAnalysisCoverage::kLCD == coverage) {} bool GrXferProcessor::hasSecondaryOutput() const { if (!this->willReadDstColor()) { return this->onHasSecondaryOutput(); } return this->dstReadUsesMixedSamples(); } void GrXferProcessor::getGLSLProcessorKey(const GrShaderCaps& caps, GrProcessorKeyBuilder* b, const GrSurfaceOrigin* originIfDstTexture) const { uint32_t key = this->willReadDstColor() ? 0x1 : 0x0; if (key) { if (originIfDstTexture) { key |= 0x2; if (kTopLeft_GrSurfaceOrigin == *originIfDstTexture) { key |= 0x4; } } if (this->dstReadUsesMixedSamples()) { key |= 0x8; } } if (fIsLCD) { key |= 0x10; } b->add32(key); this->onGetGLSLProcessorKey(caps, b); } #ifdef SK_DEBUG static const char* equation_string(GrBlendEquation eq) { switch (eq) { case kAdd_GrBlendEquation: return "add"; case kSubtract_GrBlendEquation: return "subtract"; case kReverseSubtract_GrBlendEquation: return "reverse_subtract"; case kScreen_GrBlendEquation: return "screen"; case kOverlay_GrBlendEquation: return "overlay"; case kDarken_GrBlendEquation: return "darken"; case kLighten_GrBlendEquation: return "lighten"; case kColorDodge_GrBlendEquation: return "color_dodge"; case kColorBurn_GrBlendEquation: return "color_burn"; case kHardLight_GrBlendEquation: return "hard_light"; case kSoftLight_GrBlendEquation: return "soft_light"; case kDifference_GrBlendEquation: return "difference"; case kExclusion_GrBlendEquation: return "exclusion"; case kMultiply_GrBlendEquation: return "multiply"; case kHSLHue_GrBlendEquation: return "hsl_hue"; case kHSLSaturation_GrBlendEquation: return "hsl_saturation"; case kHSLColor_GrBlendEquation: return "hsl_color"; case kHSLLuminosity_GrBlendEquation: return "hsl_luminosity"; case kIllegal_GrBlendEquation: SkASSERT(false); return ""; } return ""; } static const char* coeff_string(GrBlendCoeff coeff) { switch (coeff) { case kZero_GrBlendCoeff: return "zero"; case kOne_GrBlendCoeff: return "one"; case kSC_GrBlendCoeff: return "src_color"; case kISC_GrBlendCoeff: return "inv_src_color"; case kDC_GrBlendCoeff: return "dst_color"; case kIDC_GrBlendCoeff: return "inv_dst_color"; case kSA_GrBlendCoeff: return "src_alpha"; case kISA_GrBlendCoeff: return "inv_src_alpha"; case kDA_GrBlendCoeff: return "dst_alpha"; case kIDA_GrBlendCoeff: return "inv_dst_alpha"; case kConstC_GrBlendCoeff: return "const_color"; case kIConstC_GrBlendCoeff: return "inv_const_color"; case kConstA_GrBlendCoeff: return "const_alpha"; case kIConstA_GrBlendCoeff: return "inv_const_alpha"; case kS2C_GrBlendCoeff: return "src2_color"; case kIS2C_GrBlendCoeff: return "inv_src2_color"; case kS2A_GrBlendCoeff: return "src2_alpha"; case kIS2A_GrBlendCoeff: return "inv_src2_alpha"; case kIllegal_GrBlendCoeff: SkASSERT(false); return ""; } return ""; } SkString GrXferProcessor::BlendInfo::dump() const { SkString out; out.printf("write_color(%d) equation(%s) src_coeff(%s) dst_coeff:(%s) const(0x%08x)", fWriteColor, equation_string(fEquation), coeff_string(fSrcBlend), coeff_string(fDstBlend), fBlendConstant.toBytes_RGBA()); return out; } #endif /////////////////////////////////////////////////////////////////////////////// GrXPFactory::AnalysisProperties GrXPFactory::GetAnalysisProperties( const GrXPFactory* factory, const GrProcessorAnalysisColor& color, const GrProcessorAnalysisCoverage& coverage, const GrCaps& caps, GrClampType clampType) { AnalysisProperties result; if (factory) { result = factory->analysisProperties(color, coverage, caps, clampType); } else { result = GrPorterDuffXPFactory::SrcOverAnalysisProperties(color, coverage, caps, clampType); } SkASSERT(!(result & AnalysisProperties::kRequiresDstTexture)); if ((result & AnalysisProperties::kReadsDstInShader) && !caps.shaderCaps()->dstReadInShaderSupport()) { result |= AnalysisProperties::kRequiresDstTexture | AnalysisProperties::kRequiresNonOverlappingDraws; } return result; } sk_sp GrXPFactory::MakeXferProcessor(const GrXPFactory* factory, const GrProcessorAnalysisColor& color, GrProcessorAnalysisCoverage coverage, bool hasMixedSamples, const GrCaps& caps, GrClampType clampType) { SkASSERT(!hasMixedSamples || caps.shaderCaps()->dualSourceBlendingSupport()); if (factory) { return factory->makeXferProcessor(color, coverage, hasMixedSamples, caps, clampType); } else { return GrPorterDuffXPFactory::MakeSrcOverXferProcessor(color, coverage, hasMixedSamples, caps); } }