24 lines
581 B
Scala
24 lines
581 B
Scala
$input v_texcoord0, v_color0
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/*
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* Copyright 2011-2023 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx/blob/master/LICENSE
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*/
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#include "common.sh"
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SAMPLER2D(s_texColor, 0);
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void main()
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{
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vec4 bgColor = vec4(0.0, 0.0, 0.0, 0.0);
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vec4 fgColor = vec4(1.0, 1.0, 1.0, 1.0);
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float sigDist = texture2DLod(s_texColor, v_texcoord0.xy, u_textureLod).x;
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float width = fwidth(sigDist);
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float edge = 0.5;
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float opacity = clamp(smoothstep(edge - width, edge + width, sigDist), 0.0, 1.0);
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gl_FragColor = mix(bgColor, fgColor, opacity);
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}
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