Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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// STATIC: "HASALPHAMASK" "0..1"
// STATIC: "HASSTATICTEXTURE" "0..1"
// DYNAMIC: "HDRENABLED" "0..1"
// DYNAMIC: "PIXELFOGTYPE" "0..1"
#include "common_ps_fxc.h"
const HALF3 g_StaticAmount : register( c0 ); //x is static, y is 1.0 - static
#if( HASSTATICTEXTURE )
sampler StaticTextureSampler : register( s0 );
# if( HASALPHAMASK )
sampler AlphaMaskSampler : register( s1 );
# endif
#else
# if( HASALPHAMASK )
sampler AlphaMaskSampler : register( s0 );
# endif
#endif
struct PS_INPUT
{
float4 vProjPos : POSITION;
//vStaticTexCoord and vAlphaMaskTexCoord are the same numbers, but we need to map TEXCOORD0 to sampler 0, and TEXCOORD1 to sampler1. ps11 compatibility issue
#if( HASSTATICTEXTURE )
float2 vStaticTexCoord : TEXCOORD0;
# if( HASALPHAMASK )
float2 vAlphaMaskTexCoord : TEXCOORD1;
# endif
#else
# if( HASALPHAMASK )
float2 vAlphaMaskTexCoord : TEXCOORD0;
# else
float2 vUnusedTexCoord1 : TEXCOORD0;
# endif
float2 vUnusedTexCoord2 : TEXCOORD1;
#endif
};
HALF4 main( PS_INPUT i ) : COLOR
{
HALF4 result;
# if( HASSTATICTEXTURE )
result.rgb = tex2D( StaticTextureSampler, i.vStaticTexCoord ).rgb;
# else
result.rgb = 0.25; //without a static texture, just be gray
# endif
# if( HASALPHAMASK )
result.a = min( g_StaticAmount.x, tex2D( AlphaMaskSampler, i.vAlphaMaskTexCoord ).a ); //when static reaches 0, fades away completely, also never exceeds the mask's alpha
# else
result.a = g_StaticAmount.x; //when static reaches 0, fades away completely
# endif
//result.r = 1.0;
//result.gb = 0.0;
//result.a = 0.5;
return result;
}