Function lookupRampParameterSuffixes

src/IECoreScene/ShaderNetworkAlgo.cpp:791–817

}

std::tuple< const std::string*, const std::string*, const std::string*, const std::string*, const std::string* >
lookupRampParameterSuffixes( const std::string &shaderName )
{
	// We seem to be able to identify shaders that should use the PRMan convention by whether they start
	// with one of the PRMan prefixes.
	// NOTE : This will fail if a shader is loaded from an explicit path, rather than being found in the
	// search path, because the shader name will include the full file path. We consider this an
	// acceptable failure, because shaders should be found in the search paths.
	if( boost::starts_with( shaderName, "Pxr" ) ||  boost::starts_with( shaderName, "Lama" ) )
	{
		// The convention used by the PRMan shader library.
		static const std::string positions( "_Knots" );
		static const std::string floatValues( "_Floats" );
		static const std::string colorValues( "_Colors" );
		static const std::string basis( "_Interpolation" );
		static const std::string count( "" );
		return { &positions, &floatValues, &colorValues, &basis, &count };
	}
	else
	{
		// The convention used by the OSL shaders that we ship with Gaffer.
		static const std::string positions( "Positions" );
		static const std::string values( "Values" );
		static const std::string basis( "Basis" );
		return { &positions, &values, &values, &basis, nullptr };
	}
}

template<typename Ramp>
int expandRamp( const InternedString &name, const Ramp &ramp, CompoundDataMap &newParameters, const std::string &shaderName )