Added way to set global light from game.

+ Some clean up in the mesh renderer

Assets/source/Triangle.vert.hlsl

@@ -27,7 +27,7 @@ Output main(uint vertexIndex : SV_VertexID)
 
     float4 worldPos = mul(Model, float4(pos, 1.0f));
     output.Position = mul(ViewProjection, worldPos);
-    output.Color = col;
+    output.Color = col * MeshAlbedo;
     output.WorldPosition = worldPos.xyz;
     
     float3 worldNormal = mul((float3x3)Model, normal);