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/**
* @file class1\environment\pbrterrainV.glsl
*
* $LicenseInfo:firstyear=2023&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2023, 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;
in vec3 position;
in vec3 normal;
in vec4 tangent;
in vec4 diffuse_color;
in vec2 texcoord0;
in vec2 texcoord1;
out vec3 vary_normal;
out vec3 vary_tangent;
flat out float vary_sign;
out vec4 vary_texcoord0;
out vec4 vary_texcoord1;
uniform vec4 object_plane_s;
uniform vec4 object_plane_t;
vec4 texgen_object_pbr(vec4 tc, mat4 mat, vec4 tp0, vec4 tp1)
{
vec4 tcoord;
tcoord.x = dot(tc, tp0);
tcoord.y = dot(tc, tp1);
tcoord.z = tcoord.z;
tcoord.w = tcoord.w;
tcoord = mat * tcoord;
return tcoord;
}
void main()
{
//transform vertex
gl_Position = modelview_projection_matrix * vec4(position.xyz, 1.0);
vec3 n = normal_matrix * normal;
vec3 t = normal_matrix * tangent.xyz;
vary_tangent = normalize(t);
vary_sign = tangent.w;
vary_normal = normalize(n);
// Transform and pass tex coords
// *NOTE: KHR texture transform is ignored for now
vary_texcoord0.xy = texgen_object_pbr(vec4(texcoord0, 0, 1), texture_matrix0, object_plane_s, object_plane_t).xy;
vec4 tc = vec4(texcoord1,0,1);
vary_texcoord0.zw = tc.xy;
vary_texcoord1.xy = tc.xy-vec2(2.0, 0.0);
vary_texcoord1.zw = tc.xy-vec2(1.0, 0.0);
}
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