-added Vignette PostFx

-added vignette to the Full and Empty Template
-added vignette to the PostEffect Manager
-added vignette Shader and .cs File

Templates/Empty/game/shaders/common/postFx/vignette/VignetteP.hlsl

@@ -0,0 +1,36 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#include "../postFx.hlsl"
+#include "shadergen:/autogenConditioners.h"
+
+uniform sampler2D backBuffer : register(S0);
+uniform float radiusX;
+uniform float radiusY;
+
+float4 main(PFXVertToPix IN) : COLOR0
+{
+   float4 base = tex2D(backBuffer, IN.uv0);
+   float dist = distance(IN.uv0, float2(0.5,0.5)) * 0.7 ;
+   base.rgb *= smoothstep(radiusX, radiusY, dist);
+   return base;
+}