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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uniform sampler2D texture;
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uniform vec3 fogColor;
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varying vec4 color;
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varying vec2 texCoord;
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varying vec4 fogDensity;
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void main() {
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gl_FragColor = texture2D(texture, texCoord);
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gl_FragColor.xyz *= gl_FragColor.w; // premultiplied alpha
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gl_FragColor *= color;
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vec4 fogColorPremuld = vec4(fogColor, 1.);
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fogColorPremuld *= gl_FragColor.w;
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gl_FragColor = mix(gl_FragColor, fogColorPremuld, fogDensity);
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if(dot(gl_FragColor, vec4(1.)) < .002)
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discard;
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}
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