csgo/cstrike15_src/materialsystem/stdshaders/cs_grass_ps2x.fxc

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

// STATIC:  "CASCADED_SHADOW_MAPPING"	"0..1" [ps30]
// STATIC:	"CSM_MODE"					"0..3" [ps30]

// DYNAMIC: "DYN_CSM_ENABLED"			"0..1" [ps30]

// SKIP: ( $CASCADED_SHADOW_MAPPING == 0 ) && ( $DYN_CSM_ENABLED == 1 )

#include "common_fog_ps_fxc.h"
#include "common_ps_fxc.h"
#include "shader_constant_register_map.h"

const float4 g_Color					: register( c0 );
const float g_HDRColorScale				: register( c1 );

const float4 g_FogParams				: register( PSREG_FOG_PARAMS );
const float4 g_EyePos_SpecExponent		: register( PSREG_EYEPOS_SPEC_EXPONENT );

sampler TexSampler	: register( s0 );

#if ( CASCADED_SHADOW_MAPPING == 1 )
	sampler CSMDepthAtlasSampler					: register( s15 );
	#define CASCADE_SIZE 3
	#define CSM_ENABLED 1
	#include "csm_common_fxc.h"
#endif

struct PS_INPUT
{
	float2 baseTexCoord				: TEXCOORD0;		// Base texture coordinate
	float4 color					: TEXCOORD2;		// Vertex color (from lighting or unlit)
	float4 worldPos_projPosZ		: TEXCOORD7;		// Necessary for pixel fog
};

float4_color_return_type main( PS_INPUT i ) : COLOR
{

	float4 sample = tex2D( TexSampler, i.baseTexCoord );

	sample.rgb *= i.color.rgb;

	float fogFactor = CalcPixelFogFactor( PIXELFOGTYPE, g_FogParams, g_EyePos_SpecExponent.xyz, i.worldPos_projPosZ.xyz, i.worldPos_projPosZ.w );

	#if ( (CASCADED_SHADOW_MAPPING == 1) && (DYN_CSM_ENABLED == 1) )
		float flCSMShadow = CSMComputeShadowing( i.worldPos_projPosZ.xyz );
		flCSMShadow = (flCSMShadow * 0.7f) + 0.3f;
		sample.rgb *= flCSMShadow;
	#endif
	
	sample = FinalOutput( sample, fogFactor, PIXELFOGTYPE, TONEMAP_SCALE_LINEAR );

	return sample;
}