csgo/cstrike15_src/materialsystem/stdshaders/compositedeferredshadow_ps2x.fxc

//========== Copyright (c) Valve Corporation, All rights reserved. ==========//

sampler g_sShadow	: register( s0 );

struct PS_INPUT
{
	float2 uv	: TEXCOORD0;
};

float4 main( PS_INPUT i ) : COLOR0
{
	float4 vShadow = tex2D( g_sShadow, i.uv );

	float4 o = 0;
	o.a = 1.0 - vShadow.x;
	return o;
}