/// <summary>
/// All sampler types must derive directly or indirectly from the generic SamplerBase type.
/// This method takes a sampler type and returns the realized SamplerBase type it derives from.
/// </summary>
/// <param name="sampler">The sampler type</param>
/// <returns></returns>
NamedTypeSymbol GetSamplerBase(TypeSymbol sampler)
{
if (sampler.HasAttribute("SamplerBase")) return sampler as NamedTypeSymbol;
if (sampler.BaseType != null) return GetSamplerBase(sampler.BaseType);
return null;
}
