|  | float4 AmbientColor = float4(1, 0.5, 0, 1);
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							|  | float4 AmbientColor2 = float4(0.5, 1, 0, 0);
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							|  | 
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							|  | float4 main(float4 vpos : SV_POSITION) : SV_TARGET
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							|  | {
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							|  |     float4 vpos_t = float4(vpos.xyz, 1 / vpos.w);
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							|  |     if (vpos_t.x < 400)
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							|  |         return AmbientColor;
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							|  |     else
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							|  |         return AmbientColor2;
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							|  | }
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							|  | 
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