all CI scenes load without crashing but coating and bumpmap handling (meta BSDF) is not yet complete!

Author: devshgraphicsprogramming

include/nbl/asset/material_compiler3/CFrontendIR.h

@@ -743,6 +743,15 @@ class CFrontendIR final : public CNodePool
 		// To quickly make a matching backface material from a frontface or vice versa
 		NBL_API2 typed_pointer_type<IExprNode> reciprocate(const typed_pointer_type<const IExprNode> other);
 		NBL_API2 typed_pointer_type<CFresnel> createNamedFresnel(const std::string_view name);
+		inline typed_pointer_type<CFresnel> createConstantMonochromeRealFresnel(const hlsl::float32_t orientedRealEta)
+		{
+			const auto fresnelH = getObjectPool().emplace<CFresnel>();
+			CSpectralVariable::SCreationParams<1> params = {};
+			params.knots.params[0].scale = orientedRealEta;
+			if (auto* const fresnel=getObjectPool().deref(fresnelH); fresnel)
+				fresnel->orientedRealEta = getObjectPool().emplace<CSpectralVariable>(std::move(params));
+			return fresnelH;
+		}
 
 		// IMPORTANT: Two BxDFs are not allowed to be multiplied together.
 		// NOTE: Right now all Spectral Variables are required to be Monochrome or 3 bucket fixed semantics, all the same wavelength.

include/nbl/ext/MitsubaLoader/CElementBSDF.h

@@ -132,16 +132,8 @@ class CElementBSDF : public IElement
 		inline RoughSpecularBase& operator=(const RoughSpecularBase& other)
 		{
 			distribution = other.distribution;
-			switch (distribution)
-			{
-				case ASHIKHMIN_SHIRLEY:
-					alphaU = other.alphaU;
-					alphaV = other.alphaV;
-					break;
-				default:
-					alpha = other.alpha;
-					break;
-			}
+			alphaU = other.alphaU;
+			alphaV = other.alphaV;
 			specularReflectance = other.specularReflectance;
 			return *this;
 		}

include/nbl/ext/MitsubaLoader/SContext.h

@@ -87,6 +87,8 @@ struct SContext final
 #endif
 		core::smart_refctd_ptr<frontend_ir_t> frontIR;
 		// common frontend nodes
+		frontend_ir_t::typed_pointer_type<const frontend_ir_t::IExprNode> errorBRDF;
+		frontend_ir_t::typed_pointer_type<const frontend_ir_t::CLayer> unsupportedPhong, unsupportedWard;
 		frontend_ir_t::typed_pointer_type<const frontend_ir_t::CDeltaTransmission> deltaTransmission;
 		// Common Debug Names
 		enum class ECommonDebug : uint16_t