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materialsystem/stdshaders/decalmodulate_ps2x.fxc

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+//======= Copyright © 1996-2006, Valve Corporation, All rights reserved. ======
+
+// STATIC: "CONVERT_TO_SRGB"	"0..1"	[ps20b][= g_pHardwareConfig->NeedsShaderSRGBConversion()] [PC]
+// STATIC: "CONVERT_TO_SRGB"	"0..1"	[ps30][= g_pHardwareConfig->NeedsShaderSRGBConversion()] [PC]
+// STATIC: "CONVERT_TO_SRGB"	"0..0"	[= 0] [XBOX]
+
+// DYNAMIC: "PIXELFOGTYPE"		"0..1"
+
+#include "common_ps_fxc.h"
+#include "shader_constant_register_map.h"
+
+sampler TexSampler	: register( s0 );
+
+const float4 g_FogParams				: register( PSREG_FOG_PARAMS );
+const float4 g_EyePos_SpecExponent		: register( PSREG_EYEPOS_SPEC_EXPONENT );
+
+struct PS_INPUT
+{
+	HALF2 baseTexCoord				: TEXCOORD0;		// Base texture coordinate
+	
+	float4 worldPos_projPosZ		: TEXCOORD7;		// Necessary for pixel fog
+	float4 fogFactorW				: COLOR1;
+	
+#if defined( _X360 ) //matching pixel shader inputs to vertex shader outputs to avoid shader patches	
+    HALF2 detailTexCoord			: TEXCOORD1;
+    float4 color					: TEXCOORD2;
+    float3 worldVertToEyeVector		: TEXCOORD3;
+    float3 worldSpaceNormal         : TEXCOORD4;
+    float4 vProjPos					: TEXCOORD6;
+#endif
+};
+
+float4 main( PS_INPUT i ) : COLOR
+{
+	float4 result = tex2D( TexSampler, i.baseTexCoord );
+	
+	float fogFactor = CalcPixelFogFactor( PIXELFOGTYPE, g_FogParams, g_EyePos_SpecExponent.z, i.worldPos_projPosZ.z, i.worldPos_projPosZ.w );
+	
+	// Since we're blending with a mod2x, we need to compensate with this hack
+	// NOTE: If the fog color (not fog density) is extremely dark, this can makes some decals seem
+	//       a little transparent, but it's better than not doing this
+	fogFactor = pow( saturate( fogFactor ), 0.4f );
+
+	return FinalOutput( result, fogFactor, PIXELFOGTYPE, TONEMAP_SCALE_NONE );
+}