/*
===========================================================================

Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company. 

This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").  

Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Doom 3 BFG Edition Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

#include "global.inc"

struct VS_IN {
	float4 position : POSITION;
	float2 texcoord : TEXCOORD0;
	float4 normal : NORMAL;
	float4 tangent : TANGENT;
	float4 color : COLOR0;
};

struct VS_OUT {
	float4 position : POSITION;
	float2 texcoord0 : TEXCOORD0;
};

void main( VS_IN vertex, out VS_OUT result ) {
	result.position.x = dot4( vertex.position, rpMVPmatrixX );
	result.position.y = dot4( vertex.position, rpMVPmatrixY );
	result.position.z = dot4( vertex.position, rpMVPmatrixZ );
	result.position.w = dot4( vertex.position, rpMVPmatrixW );

	// compute oldschool texgen or multiply by texture matrix
	BRANCH if ( rpTexGen0Enabled.x > 0.0 ) {
		result.texcoord0.x = dot4( vertex.position, rpTexGen0S );
		result.texcoord0.y = dot4( vertex.position, rpTexGen0T );
	} else {
		result.texcoord0.x = dot4( vertex.texcoord.xy, rpTextureMatrixS );
		result.texcoord0.y = dot4( vertex.texcoord.xy, rpTextureMatrixT );
	}
}