コード例 #1
0
GrXferProcessor* PDLCDXferProcessor::Create(SkXfermode::Mode xfermode,
                                            const GrProcOptInfo& colorPOI) {
    if (SkXfermode::kSrcOver_Mode != xfermode) {
        return NULL;
    }

    if (kRGBA_GrColorComponentFlags != colorPOI.validFlags()) {
        return NULL;
    }

    GrColor blendConstant = GrUnPreMulColor(colorPOI.color());
    uint8_t alpha = GrColorUnpackA(blendConstant);
    blendConstant |= (0xff << GrColor_SHIFT_A);

    return SkNEW_ARGS(PDLCDXferProcessor, (blendConstant, alpha));
}
コード例 #2
0
GrXferProcessor*
GrPorterDuffXPFactory::onCreateXferProcessor(const GrDrawTargetCaps& caps,
                                             const GrProcOptInfo& colorPOI,
                                             const GrProcOptInfo& covPOI,
                                             const GrDeviceCoordTexture* dstCopy) const {
    if (!covPOI.isFourChannelOutput()) {
        return PorterDuffXferProcessor::Create(fSrcCoeff, fDstCoeff, 0, dstCopy,
                                               this->willReadDstColor(caps, colorPOI, covPOI));
    } else {
        if (this->supportsRGBCoverage(colorPOI.color(), colorPOI.validFlags())) {
            SkASSERT(kRGBA_GrColorComponentFlags == colorPOI.validFlags());
            GrColor blendConstant = GrUnPreMulColor(colorPOI.color());
            return PorterDuffXferProcessor::Create(kConstC_GrBlendCoeff, kISC_GrBlendCoeff,
                                                   blendConstant, dstCopy,
                                                   this->willReadDstColor(caps, colorPOI, covPOI));
        } else {
            return NULL;
        }
    }
}