Merge pull request #2089 from bghgary/bump-normal-fix

Fix bugs with bump map and normal in pbr shader

src/Shaders/ShadersInclude/pbrFragmentDeclaration.fx

@@ -34,6 +34,10 @@ uniform vec2 vAlbedoInfos;
 uniform vec3 vAmbientInfos;
 #endif
 
+#ifdef BUMP
+uniform vec3 vBumpInfos;
+#endif
+
 #ifdef OPACITY	
 uniform vec2 vOpacityInfos;
 #endif

src/Shaders/pbr.fragment.fx

@@ -1,4 +1,4 @@
-#ifdef BUMP
+#if defined(BUMP)|| !defined(NORMAL)
 #extension GL_OES_standard_derivatives : enable
 #endif