You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
33 lines
860 B
33 lines
860 B
//========== Copyright (c) Valve Corporation, All rights reserved. ==========//
|
|
|
|
#define HDRTYPE HDR_TYPE_NONE
|
|
#include "common_ps_fxc.h"
|
|
|
|
sampler TexSampler : register( s0 );
|
|
|
|
struct PS_INPUT
|
|
{
|
|
float2 coordTap0 : TEXCOORD0;
|
|
float2 coordTap1 : TEXCOORD1;
|
|
float2 coordTap2 : TEXCOORD2;
|
|
float2 coordTap3 : TEXCOORD3;
|
|
};
|
|
|
|
float AlphaConst : register( c0 );
|
|
|
|
float4 main( PS_INPUT i ) : COLOR
|
|
{
|
|
float3 s0, s1, s2, s3;
|
|
|
|
// Sample 4 taps. We use the trick of sampling four taps with bilinear in order
|
|
// to average 16 texels.
|
|
s0 = tex2D( TexSampler, i.coordTap0);
|
|
s1 = tex2D( TexSampler, i.coordTap1);
|
|
s2 = tex2D( TexSampler, i.coordTap2);
|
|
s3 = tex2D( TexSampler, i.coordTap3);
|
|
float avglum=0.25*(s0.x+s1.x+s2.x+s3.x);
|
|
float elum=exp(avglum);
|
|
|
|
return FinalOutput( float4(elum,elum,elum,1), 0, PIXEL_FOG_TYPE_NONE, TONEMAP_SCALE_NONE );
|
|
}
|
|
|