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/**
* @file bumpV.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 vec4 diffuse_color;
ATTRIBUTE vec3 normal;
ATTRIBUTE vec2 texcoord0;
ATTRIBUTE vec4 tangent;
VARYING vec3 vary_mat0;
VARYING vec3 vary_mat1;
VARYING vec3 vary_mat2;
VARYING vec4 vertex_color;
VARYING vec2 vary_texcoord0;
#ifdef HAS_SKIN
mat4 getObjectSkinnedTransform();
uniform mat4 projection_matrix;
uniform mat4 modelview_matrix;
#endif
void main()
{
//transform vertex
#ifdef HAS_SKIN
mat4 mat = getObjectSkinnedTransform();
mat = modelview_matrix * mat;
vec3 pos = (mat*vec4(position.xyz, 1.0)).xyz;
gl_Position = projection_matrix*vec4(pos, 1.0);
vec3 n = normalize((mat * vec4(normal.xyz+position.xyz, 1.0)).xyz-pos.xyz);
vec3 t = normalize((mat * vec4(tangent.xyz+position.xyz, 1.0)).xyz-pos.xyz);
#else
gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
vec3 n = normalize(normal_matrix * normal);
vec3 t = normalize(normal_matrix * tangent.xyz);
#endif
vec3 b = cross(n, t) * tangent.w;
vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
vary_mat0 = vec3(t.x, b.x, n.x);
vary_mat1 = vec3(t.y, b.y, n.y);
vary_mat2 = vec3(t.z, b.z, n.z);
vertex_color = diffuse_color;
}
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