mirror of
https://github.com/alliedmodders/hl2sdk.git
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94 lines
2.4 KiB
Plaintext
94 lines
2.4 KiB
Plaintext
//====== Copyright © 1996-2005, Valve Corporation, All rights reserved. =======
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//
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// Purpose:
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//
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//=============================================================================
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// DYNAMIC: "COMPRESSED_VERTS" "0..1"
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// DYNAMIC: "SKINNING" "0..1"
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// STATIC: "MODEL" "0..1"
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// STATIC: "FOW" "0..1"
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#include "common_fog_vs_fxc.h"
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#include "common_vs_fxc.h"
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#include "fow_vs_fxc.h"
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//const float4 cBaseTexCoordTransform[ 2 ] : register( SHADER_SPECIFIC_CONST_6 );
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const float4 g_flProjectedSizeRotation : register( c49 );
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const float4 g_vProjectionOrigin : register( c48 );
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static const bool g_bSkinning = SKINNING ? true : false;
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#if ( FOW == 1 )
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const float4 g_vFoWWorldSize : register( c26 );
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#endif
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struct VS_INPUT
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{
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float4 vPos : POSITION;
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float4 vBoneWeights : BLENDWEIGHT;
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float4 vBoneIndices : BLENDINDICES;
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};
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struct VS_OUTPUT
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{
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float4 vProjPos : POSITION;
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float2 vBaseTexCoord : TEXCOORD0;
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#if ( FOW == 1 )
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float2 vFowCoord : TEXCOORD3;
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#endif
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};
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static const float3 Normal = float3( 0, 0, -1.0 );
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float3 ClosestPointOnPlane( float3 TestPoint )
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{
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float distance = dot( Normal, TestPoint - g_vProjectionOrigin );
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return TestPoint - distance*Normal;
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}
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float2 ComputeTexCoord( const float3 vWorldPos, const float flRotation, const float flScale )
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{
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float3 vTest = ClosestPointOnPlane( vWorldPos );
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float2 vBaseCoord = ( ( vTest - g_vProjectionOrigin ) / g_flProjectedSizeRotation.x ) + 0.5f;
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float2 vAdjust = vBaseCoord - float2( 0.5, 0.5 );
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float2 vResult;
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float c = cos( flRotation );
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float s = sin( flRotation );
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vResult.x = ( vAdjust.x * c ) + ( vAdjust.y * -s );
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vResult.y = ( vAdjust.x * s ) + ( vAdjust.y * c );
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return ( vResult / flScale ) + float2( 0.5, 0.5 );
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}
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VS_OUTPUT main( const VS_INPUT v )
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{
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VS_OUTPUT o;
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float3 vNewPos = v.vPos;
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// vNewPos.z += 128.0;
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float4 vProjPos;
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float3 vWorldPos;
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SkinPosition( g_bSkinning, v.vPos, v.vBoneWeights, v.vBoneIndices, vWorldPos );
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// vProjPos = mul( float4( vNewPos, 1 ), cModelViewProj );
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vProjPos = mul( float4( vWorldPos, 1 ), cViewProj );
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o.vProjPos = vProjPos;
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// vWorldPos = mul( float4( vNewPos, 1 ), cModel[0] );
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#if ( FOW == 1 )
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o.vFowCoord = CalcFoWCoord( g_vFoWWorldSize, vWorldPos.xy );
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#endif
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o.vBaseTexCoord = ComputeTexCoord( vWorldPos, g_flProjectedSizeRotation.y, 1.0 );
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return o;
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}
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