Added Material::HasCustomShaderProgram

Former-commit-id: bdd119b41d5312a65aec2d781a78283343ef4b4c

include/Nazara/Renderer/Material.hpp

@@ -78,6 +78,7 @@ class NAZARA_API NzMaterial : public NzResource
 		nzBlendFunc GetSrcBlend() const;
 
 		bool HasAlphaMap() const;
+		bool HasCustomShaderProgram(nzShaderTarget target, nzUInt32 flags) const;
 		bool HasDiffuseMap() const;
 		bool HasEmissiveMap() const;
 		bool HasHeightMap() const;