GrGLProgramBuilder::SeparableVaryingHandle GrGLProgramBuilder::addSeparableVarying(const char*,
GrGLVertToFrag*,
GrSLPrecision) {
// This call is not used for non-NVPR backends. However, the polymorphism between
// GrPrimitiveProcessor, GrGLPrimitiveProcessor and GrGLProgramBuilder does not allow for
// a system where GrGLPathProcessor would be able to refer to a primitive-specific builder
// that would understand separable varyings. Thus separable varyings need to be present
// early in the inheritance chain of builders.
SkASSERT(false);
return SeparableVaryingHandle();
}
GrGLProgramBuilder::SeparableVaryingHandle GrGLProgramBuilder::addSeparableVarying(
const char* name,
GrGLSLVertToFrag* v,
GrSLPrecision fsPrecision) {
// This call is not used for non-NVPR backends.
SkASSERT(fGpu->glCaps().shaderCaps()->pathRenderingSupport() &&
fArgs.fPrimitiveProcessor->isPathRendering() &&
!fArgs.fPrimitiveProcessor->willUseGeoShader() &&
fArgs.fPrimitiveProcessor->numAttribs() == 0);
this->addVarying(name, v, fsPrecision);
SeparableVaryingInfo& varyingInfo = fSeparableVaryingInfos.push_back();
varyingInfo.fVariable = this->getFragmentShaderBuilder()->fInputs.back();
varyingInfo.fLocation = fSeparableVaryingInfos.count() - 1;
return SeparableVaryingHandle(varyingInfo.fLocation);
}
