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/**
* @file pathfindingV.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 mat4 modelview_projection_matrix;
ATTRIBUTE vec3 position;
ATTRIBUTE vec4 diffuse_color;
ATTRIBUTE vec3 normal;
VARYING vec4 vertex_color;
uniform float tint;
uniform float ambiance;
uniform float alpha_scale;
void main()
{
gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
vec3 l1 = vec3(-0.75, 1, 1.0)*0.5;
vec3 l2 = vec3(0.5, -0.6, 0.4)*0.25;
vec3 l3 = vec3(0.5, -0.8, 0.3)*0.5;
float lit = max(dot(normal, l1), 0.0);
lit += max(dot(normal, l2), 0.0);
lit += max(dot(normal, l3), 0.0);
lit = clamp(lit, ambiance, 1.0);
vertex_color = vec4(diffuse_color.rgb * tint * lit, diffuse_color.a*alpha_scale);
}
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