You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
2.0 KiB
GLSL
54 lines
2.0 KiB
GLSL
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2008, 2011 Martin Gräßlin <kde@martin-graesslin.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************/
|
|
#version 140
|
|
uniform mat4 modelViewProjectionMatrix;
|
|
uniform float width;
|
|
uniform float height;
|
|
uniform float cubeAngle;
|
|
uniform vec2 u_offset;
|
|
uniform float timeLine;
|
|
|
|
in vec4 position;
|
|
in vec4 texcoord;
|
|
|
|
out vec2 texcoord0;
|
|
|
|
void main()
|
|
{
|
|
texcoord0 = texcoord.st;
|
|
vec4 transformedVertex = position;
|
|
transformedVertex.x = transformedVertex.x - width;
|
|
transformedVertex.y = transformedVertex.y - height;
|
|
transformedVertex.xy = transformedVertex.xy + u_offset;
|
|
float radian = radians(cubeAngle);
|
|
float radius = (width)/cos(radian);
|
|
float zenithAngle = acos(transformedVertex.y/radius);
|
|
float azimuthAngle = asin(transformedVertex.x/radius);
|
|
transformedVertex.z = radius * sin( zenithAngle ) * cos( azimuthAngle ) - radius*cos( radians( 90.0 - cubeAngle ) );
|
|
transformedVertex.x = radius * sin( zenithAngle ) * sin( azimuthAngle );
|
|
|
|
transformedVertex.xy += vec2( width - u_offset.x, height - u_offset.y );
|
|
|
|
vec3 diff = (position.xyz - transformedVertex.xyz)*timeLine;
|
|
transformedVertex.xyz += diff;
|
|
|
|
gl_Position = modelViewProjectionMatrix*transformedVertex;
|
|
}
|