Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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//===================== Copyright (c) Valve Corporation. All Rights Reserved. ======================
//
// Example vertex shader that can be applied to models
//
//==================================================================================================
// DYNAMIC: "COMPRESSED_VERTS" "0..1"
// DYNAMIC: "DOWATERFOG" "0..1"
// DYNAMIC: "SKINNING" "0..1"
// DYNAMIC: "LIGHTING_PREVIEW" "0..1"
// DYNAMIC: "NUM_LIGHTS" "0..4"
#include "common_vs_fxc.h"
static const bool g_bSkinning = SKINNING ? true : false;
static const int g_FogType = DOWATERFOG;
const float4 cBaseTexCoordTransform[2] : register( SHADER_SPECIFIC_CONST_0 );
//-----------------------------------------------------------------------------
// Input vertex format
//-----------------------------------------------------------------------------
struct VS_INPUT
{
// This is all of the stuff that we ever use.
float4 vPos : POSITION;
float4 vBoneWeights : BLENDWEIGHT;
float4 vBoneIndices : BLENDINDICES;
float4 vNormal : NORMAL;
float2 vTexCoord0 : TEXCOORD0;
};
struct VS_OUTPUT
{
// Stuff that isn't seen by the pixel shader
float4 projPosSetup : POSITION;
float fog : FOG;
// Stuff that is seen by the pixel shader
float2 baseTexCoord : TEXCOORD0;
float4 lightAtten : TEXCOORD1;
float3 worldNormal : TEXCOORD2;
float3 worldPos : TEXCOORD3;
float3 projPos : TEXCOORD4;
};
//-----------------------------------------------------------------------------
// Main shader entry point
//-----------------------------------------------------------------------------
VS_OUTPUT main( const VS_INPUT v )
{
VS_OUTPUT o = ( VS_OUTPUT )0;
float3 vNormal;
DecompressVertex_Normal( v.vNormal, vNormal );
float3 worldNormal, worldPos;
SkinPositionAndNormal( g_bSkinning, v.vPos, vNormal, v.vBoneWeights, v.vBoneIndices, worldPos, worldNormal );
// Transform into projection space
float4 vProjPos = mul( float4( worldPos, 1 ), cViewProj );
o.projPosSetup = vProjPos;
vProjPos.z = dot( float4( worldPos, 1 ), cViewProjZ );
o.projPos = vProjPos.xyz;
o.fog = CalcFog( worldPos, vProjPos.xyz, g_FogType );
// Needed for water fog alpha and diffuse lighting
o.worldPos = worldPos;
o.worldNormal = normalize( worldNormal );
// Scalar attenuations for four lights
o.lightAtten.xyz = float4(0,0,0,0);
#if ( NUM_LIGHTS > 0 )
o.lightAtten.x = GetVertexAttenForLight( worldPos, 0, false );
#endif
#if ( NUM_LIGHTS > 1 )
o.lightAtten.y = GetVertexAttenForLight( worldPos, 1, false );
#endif
#if ( NUM_LIGHTS > 2 )
o.lightAtten.z = GetVertexAttenForLight( worldPos, 2, false );
#endif
#if ( NUM_LIGHTS > 3 )
o.lightAtten.w = GetVertexAttenForLight( worldPos, 3, false );
#endif
// Base texture coordinate transform
o.baseTexCoord.x = dot( v.vTexCoord0, cBaseTexCoordTransform[0] );
o.baseTexCoord.y = dot( v.vTexCoord0, cBaseTexCoordTransform[1] );
return o;
}