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24 lines
764 B
24 lines
764 B
//========== Copyright (c) Valve Corporation, All rights reserved. ==========//
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#include "common_ps_fxc.h"
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sampler InputSampler : register( s0 );
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sampler FilmGrain : register( s1 );
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const float4 vNoiseScale : register( c0 );
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struct PS_INPUT
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{
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float2 inputImageCoords : TEXCOORD0; // Input image having grain added
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float2 filmGrainCoords : TEXCOORD1; // Tiling film grain texture
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};
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float4_color_return_type main( PS_INPUT i ) : COLOR
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{
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float3 hsl = RGBtoHSL( tex2D( InputSampler, i.inputImageCoords ) ).rgb;
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float3 hslNoise = tex2D( FilmGrain, i.filmGrainCoords ).rgb * 2.0f - 1.0f;
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hsl.rgb += hslNoise.rgb * vNoiseScale.rgb * float3( 0.5f, 1.0f, 1.0f );
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return FinalOutput( float4 ( hsl.rgb, 1.0f ), 0, PIXEL_FOG_TYPE_NONE, TONEMAP_SCALE_NONE );
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}
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