8 ===========================================================================
9 Copyright (C) 2006 Robert Beckebans <trebor_7@users.sourceforge.net>
11 This file is part of XreaL source code.
13 XreaL source code is free software; you can redistribute it
14 and/or modify it under the terms of the GNU General Public License as
15 published by the Free Software Foundation; either version 2 of the License,
16 or (at your option) any later version.
18 XreaL source code is distributed in the hope that it will be
19 useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with XreaL source code; if not, write to the Free Software
25 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
26 ===========================================================================
29 attribute vec4 attr_TexCoord0;
31 varying vec3 var_Vertex;
32 varying vec3 var_Normal;
33 varying vec2 var_TexDiffuse;
34 varying vec4 var_TexAtten;
38 // transform vertex position into homogeneous clip-space
39 gl_Position = ftransform();
41 // assign position in object space
42 var_Vertex = gl_Vertex.xyz;
44 // assign normal in object space
45 var_Normal = gl_Normal.xyz;
47 // transform diffusemap texcoords
48 var_TexDiffuse = (gl_TextureMatrix[0] * attr_TexCoord0).st;
50 // calc light xy,z attenuation in light space
51 var_TexAtten = gl_TextureMatrix[3] * gl_Vertex;