mirror of
https://github.com/MaurycyLiebner/enve.git
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37 lines
1.2 KiB
GLSL
37 lines
1.2 KiB
GLSL
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// 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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// enve uses OpenGL 3.3
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#version 330 core
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// output color
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layout(location = 0) out vec4 fragColor;
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// processed texture coordinate, from the vertex shader
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in vec2 texCoord;
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// texture provided by enve
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uniform sampler2D texture;
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// the value for the 'red' property
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uniform float red;
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void main(void) {
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// texture pixel color at the coordinate
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vec4 color = texture2D(texture, texCoord);
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// assign value to the output color,
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// multiply red by the 'red' property value
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fragColor = vec4(color.r * red, color.g, color.b, color.a);
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}
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