shaders/scanlines-basic.frag
author František Kučera <franta-hg@frantovo.cz>
Wed, 06 Dec 2023 22:54:24 +0100
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changeset 21 bcc53967ab3c
parent 18 c4384f43c739
child 28 4cbd9c0beb4c
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shaders: dynamic line count derived from the texture resolution
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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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void main() {
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	fColor = texture(uTexture, vTextureXY).rgba;
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	float lineCount = textureSize(uTexture, 0).y;
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	fColor.xyz *= abs(sin(radians(vTextureXY.y * 180. * lineCount)));
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}