35 lines
1.2 KiB
Plaintext
35 lines
1.2 KiB
Plaintext
//======= Copyright © 1996-2006, Valve Corporation, All rights reserved. ======
|
|
|
|
#include "common_ps_fxc.h"
|
|
|
|
sampler TexSampler : register( s0 );
|
|
sampler TexRed : register( s1 );
|
|
sampler TexGreen : register( s2 );
|
|
sampler TexBlue : register( s3 );
|
|
|
|
float2 g_vPixelSize : register( c4 );
|
|
|
|
struct PS_INPUT
|
|
{
|
|
float2 baseTexCoord : TEXCOORD0; // Base texture coordinate
|
|
};
|
|
|
|
float4 main( PS_INPUT i ) : COLOR
|
|
{
|
|
// Make outline 2 pixels wide $C0_X in a vmt doesn't seem to work in staging so I can't parameterize this right now
|
|
float2 vOffset = 2.0f * g_vPixelSize.xy;
|
|
|
|
// Take the max of 4 offset texture samples
|
|
float4 result;
|
|
result.rgba = tex2D( TexSampler, i.baseTexCoord.xy + float2( vOffset.x, vOffset.y ) );
|
|
result.rgba = max( result.rgba, tex2D( TexSampler, i.baseTexCoord.xy + float2( vOffset.x, -vOffset.y ) ) );
|
|
result.rgba = max( result.rgba, tex2D( TexSampler, i.baseTexCoord.xy + float2( -vOffset.x, vOffset.y ) ) );
|
|
result.rgba = max( result.rgba, tex2D( TexSampler, i.baseTexCoord.xy + float2( -vOffset.x, -vOffset.y ) ) );
|
|
|
|
// Store max color component in alpha for alpha blend of one/invSrcAlpha
|
|
float flLuminance = max( result.r, max( result.g, result.b ) );
|
|
result.a = flLuminance;
|
|
|
|
return result.rgba;
|
|
}
|