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23 lines
551 B
GLSL
23 lines
551 B
GLSL
#version 330 core
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out vec4 FragColor;
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in vec4 vertexColor;
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uniform vec3 iResolution; // viewport resolution (in pixels)
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uniform vec4 color; // drawing color
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void main()
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{
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vec4 c = color * vertexColor;
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FragColor = vec4( c.r * c.a, c.g * c.a, c.b * c.a, c.a);
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}
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// RGBA 2 YUVA converter
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//vec4 yuva = vec4(0.0);
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//yuva.x = rgba.r * 0.299 + rgba.g * 0.587 + rgba.b * 0.114;
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//yuva.y = rgba.r * -0.169 + rgba.g * -0.331 + rgba.b * 0.5 + 0.5;
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//yuva.z = rgba.r * 0.5 + rgba.g * -0.419 + rgba.b * -0.081 + 0.5;
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//yuva.w = 1.0;
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