43 lines
1.1 KiB
GLSL
43 lines
1.1 KiB
GLSL
/*
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Copyright (c) 2013 yvt
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This file is part of OpenSpades.
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OpenSpades is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenSpades is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenSpades. If not, see <http://www.gnu.org/licenses/>.
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*/
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attribute vec2 positionAttribute;
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uniform vec4 scanRange;
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uniform vec4 drawRange;
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varying vec3 scanPos;
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varying vec2 circlePos;
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void main() {
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scanPos.xy = mix(scanRange.xy, scanRange.zw,
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positionAttribute.xy);
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scanPos.z = .9999999;
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gl_Position.xy = mix(drawRange.xy, drawRange.zw,
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positionAttribute.xy);
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gl_Position.z = 0.5;
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gl_Position.w = 1.;
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circlePos = mix(vec2(-1.), vec2(1.), positionAttribute.xy);
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}
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