Fixed forward shading point lights for real

Thanks to Raakz


Former-commit-id: a6c2b282a18d2dfa94732afb401811c8dd5d4b93

src/Nazara/Renderer/Resources/Shaders/Model/compatibility.frag

@@ -169,7 +169,7 @@ void main()
 				float lightDirLength = length(lightDir);
 				lightDir /= lightDirLength; // Normalisation
 				
-				float att = max(Lights[i].parameters1.w - Lights[i].parameters2.x*lightDirLength, 0.0);
+				float att = max(Lights[i].parameters1.w - Lights[i].parameters2.w*lightDirLength, 0.0);
 
 				// Ambient
 				lightAmbient += att * Lights[i].color.rgb * Lights[i].factors.x * (MaterialAmbient.rgb + SceneAmbient.rgb);

src/Nazara/Renderer/Resources/Shaders/Model/core.frag

@@ -175,7 +175,7 @@ void main()
 					float lightDirLength = length(lightDir);
 					lightDir /= lightDirLength; // Normalisation
 					
-					float att = max(Lights[i].parameters1.w - Lights[i].parameters2.x*lightDirLength, 0.0);
+					float att = max(Lights[i].parameters1.w - Lights[i].parameters2.w*lightDirLength, 0.0);
 
 					// Ambient
 					lightAmbient += att * Lights[i].color.rgb * Lights[i].factors.x * (MaterialAmbient.rgb + SceneAmbient.rgb);