Adding texture views are first class primitives

res/shaders/EnvironmentMapping.slang

@@ -163,6 +163,9 @@ float3 ImportanceSampleGGX(float2 Xi, float3 N, float roughness)
     return normalize(sampleVec);
 }
 
+layout(push_constant)
+ConstantBuffer<float> pRoughness;
+
 [shader("pixel")]
 float4 computePrefilteredCubemap(float3 localPos : LOCALPOS) : SV_Target
 {
@@ -176,7 +179,7 @@ float4 computePrefilteredCubemap(float3 localPos : LOCALPOS) : SV_Target
     for(uint i = 0u; i < SAMPLE_COUNT; ++i)
     {
         float2 Xi = Hammersley(i, SAMPLE_COUNT);
-        float3 H  = ImportanceSampleGGX(Xi, N, roughness);
+        float3 H  = ImportanceSampleGGX(Xi, N, pRoughness);
         float3 L  = normalize(2.0 * dot(V, H) * H - V);
 
         float NdotL = max(dot(N, L), 0.0);