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/**
* @file terrainV.glsl
*
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2007, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
uniform mat3 normal_matrix;
uniform mat4 texture_matrix0;
uniform mat4 modelview_projection_matrix;
ATTRIBUTE vec3 position;
ATTRIBUTE vec3 normal;
ATTRIBUTE vec4 diffuse_color;
ATTRIBUTE vec2 texcoord0;
ATTRIBUTE vec2 texcoord1;
VARYING vec3 pos;
VARYING vec3 vary_normal;
VARYING vec4 vary_texcoord0;
VARYING vec4 vary_texcoord1;
uniform vec4 object_plane_s;
uniform vec4 object_plane_t;
vec4 texgen_object(vec4 vpos, vec4 tc, mat4 mat, vec4 tp0, vec4 tp1)
{
vec4 tcoord;
tcoord.x = dot(vpos, tp0);
tcoord.y = dot(vpos, tp1);
tcoord.z = tc.z;
tcoord.w = tc.w;
tcoord = mat * tcoord;
return tcoord;
}
void main()
{
//transform vertex
vec4 pre_pos = vec4(position.xyz, 1.0);
vec4 t_pos = modelview_projection_matrix * pre_pos;
gl_Position = t_pos;
pos = t_pos.xyz;
vary_normal = normalize(normal_matrix * normal);
// Transform and pass tex coords
vary_texcoord0.xy = texgen_object(vec4(position, 1.0), vec4(texcoord0,0,1), texture_matrix0, object_plane_s, object_plane_t).xy;
vec4 t = vec4(texcoord1,0,1);
vary_texcoord0.zw = t.xy;
vary_texcoord1.xy = t.xy-vec2(2.0, 0.0);
vary_texcoord1.zw = t.xy-vec2(1.0, 0.0);
}
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