Code cleanup, refactoring and simplification

shaders/hlsl/texturecubemaparray/skybox.vert

@@ -22,6 +22,11 @@ VSOutput main([[vk::location(0)]] float3 Pos : POSITION0)
 	VSOutput output = (VSOutput)0;
 	output.UVW = Pos;
 	output.UVW.yz *= -1.0;
-	output.Pos = mul(ubo.projection, mul(ubo.model, float4(Pos.xyz, 1.0)));
+	// Remove translation from view matrix
+	float4x4 viewMat = ubo.model;
+	viewMat[0][3] = 0.0;
+	viewMat[1][3] = 0.0;
+	viewMat[2][3] = 0.0;
+	output.Pos = mul(ubo.projection, mul(viewMat, float4(Pos.xyz, 1.0)));
 	return output;
 }