needed mft_pbrconfigmap or _convifgvars and _matinfocflags set to default=true to trip the forward lit side,

shifted the mft_skybox test on down below the checks for the presence of those features to be inserted, and removed them on out if a skybox.

Engine/source/materials/materialFeatureTypes.cpp

@@ -43,10 +43,10 @@ ImplementFeatureType( MFT_DetailMap, MFG_Texture, 4.0f, true );
 ImplementFeatureType( MFT_DiffuseColor, MFG_Texture, 5.0f, true );
 ImplementFeatureType( MFT_DiffuseVertColor, MFG_Texture, 6.0f, true );
 ImplementFeatureType( MFT_AlphaTest, MFG_Texture, 7.0f, true );
-ImplementFeatureType(MFT_InvertSmoothness, U32(-1), -1, true);
-ImplementFeatureType( MFT_PBRConfigMap, MFG_Texture, 8.0f, false );
-ImplementFeatureType( MFT_PBRConfigVars, MFG_Texture, 8.0f, false );
-ImplementFeatureType( MFT_MatInfoFlags, MFG_Texture, 9.0f, false );
+ImplementFeatureType( MFT_InvertSmoothness, U32(-1), -1, true);
+ImplementFeatureType( MFT_PBRConfigMap, MFG_Texture, 8.0f, true);
+ImplementFeatureType( MFT_PBRConfigVars, MFG_Texture, 8.0f, true);
+ImplementFeatureType( MFT_MatInfoFlags, MFG_Texture, 9.0f, true);
 ImplementFeatureType( MFT_GlowMap, MFG_Texture, 10.0f, true );
 ImplementFeatureType( MFT_NormalMap, MFG_Texture, 11.0f, true );
 ImplementFeatureType( MFT_DetailNormalMap, MFG_Texture, 12.0f, true );

Engine/source/materials/processedShaderMaterial.cpp

@@ -385,14 +385,6 @@ void ProcessedShaderMaterial::_determineFeatures(  U32 stageNum,
        fd.features.addFeature( MFT_CubeMap );
    }
 
-   if (features.hasFeature(MFT_SkyBox))
-   {
-      fd.features.addFeature(MFT_StaticCubemap);
-      fd.features.addFeature(MFT_CubeMap);
-      fd.features.addFeature(MFT_SkyBox);
-
-      fd.features.removeFeature(MFT_ReflectionProbes);
-   }
    fd.features.addFeature( MFT_Visibility );
 
    if (  lastStage && 
@@ -453,6 +445,17 @@ void ProcessedShaderMaterial::_determineFeatures(  U32 stageNum,
    // Deferred Shading : Material Info Flags
    fd.features.addFeature(MFT_MatInfoFlags);
 
+   if (features.hasFeature(MFT_SkyBox))
+   {
+      fd.features.addFeature(MFT_StaticCubemap);
+      fd.features.addFeature(MFT_CubeMap);
+      fd.features.addFeature(MFT_SkyBox);
+
+      fd.features.removeFeature(MFT_ReflectionProbes);
+      fd.features.removeFeature(MFT_PBRConfigVars);
+      fd.features.removeFeature(MFT_MatInfoFlags);
+   }
+
    if ( mMaterial->mAccuEnabled[stageNum] )
    {
       mHasAccumulation = true;