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30 lines
1.0 KiB
GLSL
Executable File
30 lines
1.0 KiB
GLSL
Executable File
// enve - 2D animations software
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// Copyright (C) 2016-2020 Maurycy Liebner
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// This program 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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// This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
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#version 330 core
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layout(location = 0) out vec4 fragColor;
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in vec2 texCoord;
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uniform sampler2D texture;
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uniform float brightness;
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uniform float contrast;
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void main(void) {
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vec4 color = texture2D(texture, texCoord);
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fragColor = vec4((color.rgb - 0.5*color.a) * (contrast + 1) + color.a*(0.5 + brightness), color.a);
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}
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