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//====== Copyright � 1996-2007, Valve Corporation, All rights reserved. =======//
//
// Purpose:
//
// $NoKeywords: $
//
//=============================================================================//
// STATIC: "CONVERT_TO_SRGB" "0..1" [ps20b][= g_pHardwareConfig->NeedsShaderSRGBConversion()] [PC]
// STATIC: "CONVERT_TO_SRGB" "0..0" [= 0] [XBOX]
// STATIC: "DETAILTEXTURE" "0..1"
// STATIC: "BUMPMAP" "0..1"
// STATIC: "VERTEXCOLOR" "0..1"
// STATIC: "SELFILLUM" "0..1"
// STATIC: "DIFFUSEBUMPMAP" "0..1"
// STATIC: "DETAIL_ALPHA_MASK_BASE_TEXTURE" "0..1"
// STATIC: "FLASHLIGHT" "0..1"
// STATIC: "SEAMLESS" "0..1"
// STATIC: "FLASHLIGHTDEPTHFILTERMODE" "0..2" [ps20b] [PC]
// STATIC: "FLASHLIGHTDEPTHFILTERMODE" "0..0" [ps20b] [XBOX]
// DYNAMIC: "WRITEWATERFOGTODESTALPHA" "0..1"
// DYNAMIC: "PIXELFOGTYPE" "0..1"
// DYNAMIC: "WRITE_DEPTH_TO_DESTALPHA" "0..1" [ps20b] [PC]
// DYNAMIC: "WRITE_DEPTH_TO_DESTALPHA" "0..0" [ps20b] [XBOX]
// DYNAMIC: "FLASHLIGHTSHADOWS" "0..1" [ps20b]
// SKIP: $DETAILTEXTURE && ( $BUMPMAP && !$DETAIL_ALPHA_MASK_BASE_TEXTURE )
// SKIP: !$BUMPMAP && $DIFFUSEBUMPMAP
// SKIP: $VERTEXCOLOR && $BUMPMAP
// SKIP: FLASHLIGHT && $SELFILLUM
// SKIP: FLASHLIGHT && $DETAIL_ALPHA_MASK_BASE_TEXTURE
// SKIP: FLASHLIGHT && ($BUMPMAP || $DIFFUSEBUMPMAP)
// We don't care about flashlight depth unless the flashlight is on
// SKIP: ( $FLASHLIGHT == 0 ) && ( $FLASHLIGHTSHADOWS == 1 ) [ps20b]
#if defined( SHADER_MODEL_PS_2_0 )
# define WRITE_DEPTH_TO_DESTALPHA 0
#endif
#define HDRTYPE HDR_TYPE_NONE
#include "common_flashlight_fxc.h"
#include "common_ps_fxc.h"
const HALF4 g_SelfIllumTint : register( c7 );
static const HALF g_OverbrightFactor = 2.0f;
const HALF3 g_EyePos : register( c10 );
const HALF4 g_FogParams : register( c11 );
const HALF3 g_FlashlightPos : register( c15 );
// flashlightfixme: Move this math into the vertex shader.
const float4x4 g_FlashlightWorldToTexture : register( c16 );
const float4 g_FlashlightAttenuationFactors : register( c20 );
sampler BaseTextureSampler : register( s0 );
sampler LightmapSampler : register( s1 );
sampler FlashlightSampler : register( s2 );
sampler DetailSampler : register( s3 );
sampler BumpmapSampler : register( s4 );
sampler NormalizeSampler : register( s6 );
struct PS_INPUT
{
HALF2 baseTexCoord : TEXCOORD0;
HALF4 detailOrBumpTexCoord : TEXCOORD1;
HALF4 lightmapTexCoord1And2 : TEXCOORD2; // CENTROID: TEXCOORD2
HALF2 lightmapTexCoord3 : TEXCOORD3; // CENTROID: TEXCOORD3
HALF4 worldPos_projPosZ : TEXCOORD4;
HALF3x3 tangentSpaceTranspose : TEXCOORD5;
// tangentSpaceTranspose : TEXCOORD6;
// tangentSpaceTranspose : TEXCOORD7;
HALF4 vertexColor : COLOR;
};
float4 main( PS_INPUT i ) : COLOR
{
bool bDetailTexture = DETAILTEXTURE ? true : false;
bool bBumpmap = BUMPMAP ? true : false;
bool bDiffuseBumpmap = DIFFUSEBUMPMAP ? true : false;
bool bVertexColor = VERTEXCOLOR ? true : false;
bool bSelfIllum = SELFILLUM ? true : false;
bool bDetailAlphaMaskBaseTexture = DETAIL_ALPHA_MASK_BASE_TEXTURE ? true : false;
bool bFlashlight = FLASHLIGHT ? true : false;
HALF3 lightmapColor1 = HALF3( 1.0f, 1.0f, 1.0f );
HALF3 lightmapColor2 = HALF3( 1.0f, 1.0f, 1.0f );
HALF3 lightmapColor3 = HALF3( 1.0f, 1.0f, 1.0f );
if( bBumpmap && bDiffuseBumpmap )
{
HALF2 bumpCoord1;
HALF2 bumpCoord2;
HALF2 bumpCoord3;
ComputeBumpedLightmapCoordinates( i.lightmapTexCoord1And2, i.lightmapTexCoord3.xy,
bumpCoord1, bumpCoord2, bumpCoord3 );
HALF4 lightmapSample1 = tex2D( LightmapSampler, bumpCoord1 );
lightmapColor1 = lightmapSample1.rgb;
lightmapColor2 = tex2D( LightmapSampler, bumpCoord2 );
lightmapColor3 = tex2D( LightmapSampler, bumpCoord3 );
}
else
{
if( !bFlashlight )
{
HALF2 bumpCoord1 = ComputeLightmapCoordinates( i.lightmapTexCoord1And2, i.lightmapTexCoord3.xy );
HALF4 lightmapSample1 = tex2D( LightmapSampler, bumpCoord1 );
lightmapColor1 = lightmapSample1.rgb;
}
}
HALF4 detailColor = HALF4( 1.0f, 1.0f, 1.0f, 1.0f );
if( bDetailTexture )
{
detailColor = tex2D( DetailSampler, i.detailOrBumpTexCoord.xy );
}
HALF4 baseColor = HALF4( 1.0f, 1.0f, 1.0f, 1.0f );
baseColor = tex2D( BaseTextureSampler, i.baseTexCoord );
if ( bDetailAlphaMaskBaseTexture )
{
// This is what WorldTwoTextureBlend_DX6 does.
baseColor.rgb = saturate( saturate( baseColor * 2 ) * detailColor.a + (1 - detailColor.a) );
baseColor.rgb *= detailColor;
}
else
{
baseColor.rgb = lerp( baseColor, detailColor, detailColor.a );
}
HALF3 normal = HALF3( 0.0f, 0.0f, 1.0f );
if( bBumpmap )
{
HALF3 normalTexel;
normalTexel = tex2D( BumpmapSampler, i.detailOrBumpTexCoord.xy );
normal = 2.0 * normalTexel - 1.0;
}
HALF3 albedo = HALF3( 1.0f, 1.0f, 1.0f );
HALF alpha = 1.0f;
albedo *= baseColor;
if( !bSelfIllum )
{
alpha *= baseColor.a;
}
// The vertex color contains the modulation color + vertex color combined
albedo *= i.vertexColor;
alpha *= i.vertexColor.a; // not sure about this one
HALF3 diffuseLighting;
if( bFlashlight )
{
float3 worldSpaceNormal;
// Make the unbumped version not so fucking stupid and not need tangentSpaceTranspose you knob.
worldSpaceNormal = mul( normal, i.tangentSpaceTranspose );
int nShadowSampleLevel = 0;
bool bDoShadows = false;
// On ps_2_b, we can do shadow mapping
#if ( FLASHLIGHTSHADOWS && (defined(SHADER_MODEL_PS_2_B) || defined(SHADER_MODEL_PS_3_0) ) )
nShadowSampleLevel = FLASHLIGHTDEPTHFILTERMODE;
bDoShadows = true;
#endif
float4 flashlightSpacePosition = mul( float4( i.worldPos_projPosZ.xyz, 1.0f ), g_FlashlightWorldToTexture );
diffuseLighting = DoFlashlight( g_FlashlightPos, i.worldPos_projPosZ.xyz, flashlightSpacePosition,
worldSpaceNormal, g_FlashlightAttenuationFactors.xyz,
g_FlashlightAttenuationFactors.w, FlashlightSampler, FlashlightSampler, NormalizeSampler,
nShadowSampleLevel, bDoShadows, false, float2(0, 0), false );
}
else
{
if( bBumpmap && bDiffuseBumpmap )
{
float dot1 = saturate( dot( normal, bumpBasis[0] ) );
float dot2 = saturate( dot( normal, bumpBasis[1] ) );
float dot3 = saturate( dot( normal, bumpBasis[2] ) );
float sum = dot1 + dot2 + dot3;
diffuseLighting = dot1 * lightmapColor1 +
dot2 * lightmapColor2 +
dot3 * lightmapColor3;
diffuseLighting *= 1.0f / sum;
}
else
{
diffuseLighting = lightmapColor1;
}
// Only scale here since the flashlight will already be scaled properly
diffuseLighting *= g_OverbrightFactor;
}
HALF3 diffuseComponent = albedo * diffuseLighting;
if( bSelfIllum )
{
HALF3 selfIllumComponent = g_SelfIllumTint * albedo;
diffuseComponent = lerp( diffuseComponent, selfIllumComponent, baseColor.a );
}
HALF3 specularLighting = HALF3( 0.0f, 0.0f, 0.0f );
HALF3 result = diffuseComponent + specularLighting;
float fogFactor = CalcPixelFogFactor( PIXELFOGTYPE, g_FogParams, g_EyePos.z, i.worldPos_projPosZ.z, i.worldPos_projPosZ.w );
#if WRITEWATERFOGTODESTALPHA && (PIXELFOGTYPE == PIXEL_FOG_TYPE_HEIGHT)
alpha = fogFactor;
#endif
return FinalOutput( float4( result, alpha ), fogFactor, PIXELFOGTYPE, TONEMAP_SCALE_LINEAR, (WRITE_DEPTH_TO_DESTALPHA != 0), i.worldPos_projPosZ.w );
}
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