fix various bugs

Author: devshgraphicsprogramming

examples_tests/22.RaytracedAO/raytraceCommon.glsl

@@ -394,10 +394,11 @@ vec2 SampleSphericalMap(vec3 v)
 
 void Contribution_initMiss(out Contribution contrib)
 {
-    vec2 uv = SampleSphericalMap(-normalizedV);
+	vec2 uv = SampleSphericalMap(-normalizedV);
 	// funny little trick borrowed from things like Progressive Photon Mapping
 	const float bias = 0.25*sqrt(pc.cummon.rcpFramesDispatched);
-	contrib.color = textureGrad(envMap, uv, vec2(bias*0.5,0.f), vec2(0.f,bias)).rgb;
+	contrib.albedo = contrib.color = textureGrad(envMap, uv, vec2(bias*0.5,0.f), vec2(0.f,bias)).rgb;
+	contrib.worldspaceNormal = normalizedV;
 }
 
 void Contribution_normalizeAoV(inout Contribution contrib)

include/nbl/builtin/glsl/material_compiler/common.glsl

@@ -806,8 +806,8 @@ nbl_glsl_MC_eval_pdf_aov_t nbl_glsl_MC_instr_bxdf_eval_and_pdf_common(
 			nbl_glsl_MC_microfacet_t microfacet = _microfacet;
 			bool is_valid = true;
 			bool refraction = false;
-			#ifndef NO_BSDF
 			const float orientedEta = nbl_glsl_MC_colorToScalar(ior[0]);
+			#ifndef NO_BSDF
 			if (nbl_glsl_isTransmissionPath(currInteraction.inner.isotropic.NdotV,s.NdotL))
 			{
 				const float rcpOrientedEta = 1.f/orientedEta;