shaders/default.frag
author František Kučera <franta-hg@frantovo.cz>
Tue, 05 Dec 2023 22:55:25 +0100
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changeset 20 0899e966993e
parent 18 c4384f43c739
child 28 4cbd9c0beb4c
permissions -rw-r--r--
process all X11 event waiting in the queue in the same cycle avoid so called glitches after continuous key press or X11 tunelled through SSH
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#version 330 core
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uniform  sampler2D  uTexture;
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in       vec2       vTextureXY;
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out      vec4       fColor;
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vec4 grayscale(vec4 original) {
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	const vec3 luminanceWeighting = vec3(0.2125, 0.7154, 0.0721);
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	float luminance = dot(original.rgb, luminanceWeighting);
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	return vec4(vec3(luminance), original.a);
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}
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void main() {
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	fColor = texture(uTexture, vTextureXY).rgba;
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	// fColor = grayscale(fColor);
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	// fColor *= vec4(0.8, 1., 0.2, 1.);
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	// if (fColor.a < 0.1) discard;
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	// Pretty, pretty, pretty, pretty, Peggy Sue
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}