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materialsystem/stdshaders/filmgrain_ps20.fxc

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+#define HDRTYPE HDR_TYPE_NONE
+#include "common_ps_fxc.h"
+
+sampler FilmGrainSampler   : register( s0 );
+
+const float4 vNoiseScale : register( c0 );
+
+struct PS_INPUT
+{
+	float2 grainTexCoord	: TEXCOORD0;
+};
+ 
+float4 main( PS_INPUT i ) : COLOR
+{
+   float4 noise = tex2D( FilmGrainSampler, i.grainTexCoord );
+
+   noise.w = noise.x*(1.0-vNoiseScale.w) + vNoiseScale.w;
+   noise.xyz *= vNoiseScale.xyz;
+
+   return float4( noise.x, noise.y, noise.z, noise.w );
+}