#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 <<*/ {
//////////////////////////////////////////////////////////////////////////////////////////////// // SrcOver Global functions //////////////////////////////////////////////////////////////////////////////////////////////// const GrXferProcessor& GrPorterDuffXPFactory::SimpleSrcOverXP() { static BlendFormula gSrcOverBlendFormula = COEFF_FORMULA(kOne_GrBlendCoeff, kISA_GrBlendCoeff); static PorterDuffXferProcessor gSrcOverXP(gSrcOverBlendFormula); return gSrcOverXP; }