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