shaders/soften-borders.frag
author František Kučera <franta-hg@frantovo.cz>
Fri, 12 Jan 2024 00:45:40 +0100
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#version 330 core
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uniform  sampler2D  uTexture;
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uniform  float      uTextureScale;
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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 width = 0.01;
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	fColor.a *= smoothstep(0., 0.+width, vTextureXY.x);
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	fColor.a *= smoothstep(1., 1.-width, vTextureXY.x);
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	fColor.a *= smoothstep(0., 0.+width, vTextureXY.y);
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	fColor.a *= smoothstep(1., 1.-width, vTextureXY.y);
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}