testing fixed rgb=>n mapping

hw3d/PhongPSNormalMapObject.hlsl

@@ -40,6 +40,15 @@ float4 main( float3 viewPos : Position,float3 n : Normal,float2 tc : Texcoord )
         n.y = -normalSample.y * 2.0f + 1.0f;
         n.z = -normalSample.z;
         n = mul(n, (float3x3) modelView);
+    }
+    else
+    {
+        // unpack normal data
+        const float3 normalSample = nmap.Sample(splr, tc).xyz;
+        n.x = normalSample.x * 2.0f - 1.0f;
+        n.y = -normalSample.y * 2.0f + 1.0f;
+        n.z = -normalSample.z * 2.0f + 1.0f;
+        n = mul(n, (float3x3) modelView);
     }
 	// fragment to light vector data
 	const float3 vToL = lightPos - viewPos;