sk_sp<GrFragmentProcessor> GrTextureMaker::createFragmentProcessor(
const SkMatrix& textureMatrix,
const SkRect& constraintRect,
FilterConstraint filterConstraint,
bool coordsLimitedToConstraintRect,
const GrTextureParams::FilterMode* filterOrNullForBicubic,
SkColorSpace* dstColorSpace,
SkSourceGammaTreatment gammaTreatment) {
const GrTextureParams::FilterMode* fmForDetermineDomain = filterOrNullForBicubic;
if (filterOrNullForBicubic && GrTextureParams::kMipMap_FilterMode == *filterOrNullForBicubic &&
kYes_FilterConstraint == filterConstraint) {
// TODo: Here we should force a copy restricted to the constraintRect since MIP maps will
// read outside the constraint rect. However, as in the adjuster case, we aren't currently
// doing that.
// We instead we compute the domain as though were bilerping which is only correct if we
// only sample level 0.
static const GrTextureParams::FilterMode kBilerp = GrTextureParams::kBilerp_FilterMode;
fmForDetermineDomain = &kBilerp;
}
GrTextureParams params;
if (filterOrNullForBicubic) {
params.reset(SkShader::kClamp_TileMode, *filterOrNullForBicubic);
} else {
// Bicubic doesn't use filtering for it's texture accesses.
params.reset(SkShader::kClamp_TileMode, GrTextureParams::kNone_FilterMode);
}
SkAutoTUnref<GrTexture> texture(this->refTextureForParams(params, gammaTreatment));
if (!texture) {
return nullptr;
}
SkRect domain;
DomainMode domainMode =
determine_domain_mode(constraintRect, filterConstraint, coordsLimitedToConstraintRect,
texture->width(), texture->height(), nullptr, fmForDetermineDomain,
&domain);
SkASSERT(kTightCopy_DomainMode != domainMode);
SkMatrix normalizedTextureMatrix = textureMatrix;
normalizedTextureMatrix.postIDiv(texture->width(), texture->height());
sk_sp<GrColorSpaceXform> colorSpaceXform = GrColorSpaceXform::Make(this->getColorSpace(),
dstColorSpace);
return create_fp_for_domain_and_filter(texture, std::move(colorSpaceXform),
normalizedTextureMatrix, domainMode, domain,
filterOrNullForBicubic);
}
