openspades/Resources/Shaders/BasicImage.vs

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/*
Copyright (c) 2013 yvt
This file is part of OpenSpades.
OpenSpades 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 3 of the License, or
(at your option) any later version.
OpenSpades 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 OpenSpades. If not, see <http://www.gnu.org/licenses/>.
*/
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attribute vec2 positionAttribute;
attribute vec4 colorAttribute;
attribute vec2 textureCoordAttribute;
uniform vec2 invScreenSizeFactored;
uniform vec2 invTextureSize;
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varying vec4 color;
varying vec2 texCoord;
void main() {
vec2 pos = positionAttribute;
pos = pos * invScreenSizeFactored + vec2(-1., 1.);
/*
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pos /= screenSize;
pos = pos * 2. - 1.;
pos.y = -pos.y; */
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gl_Position = vec4(pos, 0.5, 1.);
color = colorAttribute;
texCoord = textureCoordAttribute * invTextureSize;
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}