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.
34 lines
1.2 KiB
34 lines
1.2 KiB
//======= 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; |
|
}
|
|
|