mirror of
https://github.com/alliedmodders/hl2sdk.git
synced 2024-12-22 17:47:38 +08:00
93 lines
3.4 KiB
Plaintext
93 lines
3.4 KiB
Plaintext
//====== Copyright © 1996-2006, Valve Corporation, All rights reserved. =======
|
|
//
|
|
// Purpose:
|
|
//
|
|
//=============================================================================
|
|
|
|
#include "common_flashlight_fxc.h"
|
|
#include "shader_constant_register_map.h"
|
|
|
|
|
|
const float4 g_vShadowTweaks : register( PSREG_ENVMAP_TINT__SHADOW_TWEAKS );
|
|
|
|
sampler SpotSampler : register( s0 );
|
|
sampler BaseTextureSampler : register( s1 );
|
|
sampler IrisSampler : register( s3 );
|
|
|
|
#if FLASHLIGHTSHADOWS && (!SHADER_MODEL_PS_1_1) && (!SHADER_MODEL_PS_1_4) && (!SHADER_MODEL_PS_2_0)
|
|
sampler FlashlightDepthSampler : register( s4 );
|
|
sampler RandomRotationSampler : register( s5 );
|
|
#endif
|
|
|
|
#if defined( SHADER_MODEL_PS_1_1 ) || defined ( SHADER_MODEL_PS_1_4 )
|
|
|
|
#else
|
|
const float4 g_FogParams : register( PSREG_FOG_PARAMS );
|
|
const float4 g_EyePos_SpecExponent : register( PSREG_EYEPOS_SPEC_EXPONENT );
|
|
#endif
|
|
|
|
struct PS_INPUT
|
|
{
|
|
float4 spotTexCoord : TEXCOORD0;
|
|
float2 baseTexCoord : TEXCOORD1;
|
|
float2 irisTexCoord : TEXCOORD3;
|
|
#if defined( SHADER_MODEL_PS_1_1 ) || defined ( SHADER_MODEL_PS_1_4 )
|
|
float3 vertAtten : COLOR0;
|
|
#else
|
|
float3 vertAtten : TEXCOORD4;
|
|
float3 worldPos : TEXCOORD5;
|
|
float3 projPos : TEXCOORD7;
|
|
#endif
|
|
};
|
|
|
|
float4 main( PS_INPUT i ) : COLOR
|
|
{
|
|
#if defined(SHADER_MODEL_PS_2_0)
|
|
float3 spotColor = tex2Dproj( SpotSampler, i.spotTexCoord.xyzw ) * cFlashlightColor;
|
|
#elif ( defined(SHADER_MODEL_PS_2_B) || defined(SHADER_MODEL_PS_3_0) )
|
|
float3 vProjCoords = i.spotTexCoord.xyz / i.spotTexCoord.w;
|
|
float3 spotColor = tex2D( SpotSampler, vProjCoords ) * cFlashlightColor;
|
|
#else
|
|
float3 spotColor = tex2D( SpotSampler, i.spotTexCoord );
|
|
#endif
|
|
|
|
float4 baseSample = tex2D( BaseTextureSampler, i.baseTexCoord );
|
|
float4 irisSample = tex2D( IrisSampler, i.irisTexCoord );
|
|
|
|
float3 outcolor = float3(1,1,1);
|
|
|
|
#if !defined( SHADER_MODEL_PS_1_1 ) && !defined( SHADER_MODEL_PS_1_4 )
|
|
if( i.spotTexCoord.w <= 0.0f )
|
|
{
|
|
outcolor = float3(0,0,0);
|
|
}
|
|
#endif
|
|
|
|
// Composite the iris and sclera together
|
|
#if defined( SHADER_MODEL_PS_1_1 ) || defined ( SHADER_MODEL_PS_1_4 )
|
|
float3 albedo = lerp( baseSample.xyz, irisSample.xyz, irisSample.a );
|
|
#else
|
|
float3 albedo = lerp( baseSample.xyz, irisSample.xyz * 0.5f, irisSample.a ); // dim down the iris in HDR
|
|
#endif
|
|
|
|
// Do shadow depth mapping...
|
|
#if FLASHLIGHTSHADOWS && ( defined(SHADER_MODEL_PS_2_B) || defined(SHADER_MODEL_PS_3_0) )
|
|
float flShadow = DoFlashlightShadow( FlashlightDepthSampler, RandomRotationSampler, vProjCoords, i.projPos.xy / i.projPos.z, FLASHLIGHTDEPTHFILTERMODE, g_vShadowTweaks, true );
|
|
float flAttenuated = lerp( flShadow, 1.0f, g_vShadowTweaks.y ); // Blend between fully attenuated and not attenuated
|
|
flShadow = lerp( flAttenuated, flShadow, dot(i.vertAtten, float3(0.30f, 0.59f, 0.11f) ) ); // Blend between shadow and above, according to light attenuation
|
|
outcolor *= flShadow * spotColor * albedo;
|
|
#else
|
|
outcolor *= spotColor * albedo;
|
|
#endif
|
|
|
|
// NOTE!! This has to be last to avoid loss of range.
|
|
outcolor *= i.vertAtten;
|
|
#if defined( SHADER_MODEL_PS_1_1 ) || defined ( SHADER_MODEL_PS_1_4 )
|
|
return float4( outcolor, baseSample.a );
|
|
#else
|
|
float fogFactor = CalcPixelFogFactor( PIXELFOGTYPE, g_FogParams, g_EyePos_SpecExponent.z, i.worldPos.z, i.projPos.z );
|
|
return FinalOutput( float4( outcolor, 1.0f ), fogFactor, PIXELFOGTYPE, TONEMAP_SCALE_LINEAR );
|
|
#endif
|
|
|
|
}
|