Bugfix: Updated the default shader to match the new surface shader API

Data/EmptyShaderText.txt

@@ -10,17 +10,22 @@ shader Surface
 	{
 		void fsmain(
 			in VStoFS input, 
-			out float4 OutGBufferA : SV_Target0,
-			out float4 OutGBufferB : SV_Target1,
-			out float2 OutGBufferC : SV_Target2)
+			out float3 OutSceneColor : SV_Target0,
+			out float4 OutGBufferA : SV_Target1,
+			out float4 OutGBufferB : SV_Target2,
+			out float2 OutGBufferC : SV_Target3,
+			out float OutGBufferD : SV_Target4)
 		{
 			SurfaceData surfaceData;
 			surfaceData.albedo = float4(0.05f, 0.05f, 0.05f, 1.0f);
 			surfaceData.worldNormal.xyz = input.tangentToWorldZ;
 			surfaceData.roughness = 1.0f;
 			surfaceData.metalness = 0.0f;
+			surfaceData.mask = gLayer;
 			
-			encodeGBuffer(surfaceData, OutGBufferA, OutGBufferB, OutGBufferC);
+			encodeGBuffer(surfaceData, OutGBufferA, OutGBufferB, OutGBufferC, OutGBufferD);
+			
+			OutSceneColor = 0.0f;
 		}	
 	};
 };