27 lines
610 B
Scala
27 lines
610 B
Scala
$input v_view, v_bc
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/*
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* Copyright 2016 Dario Manesku. 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/common.sh"
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#include "uniforms.sh"
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void main()
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{
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vec3 color = u_wfColor;
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float opacity = u_wfOpacity;
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float thickness = u_wfThickness;
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if (gl_FrontFacing) { opacity *= 0.5; }
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vec3 fw = abs(dFdx(v_bc)) + abs(dFdy(v_bc));
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vec3 val = smoothstep(vec3_splat(0.0), fw*thickness, v_bc);
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float edge = min(min(val.x, val.y), val.z); // Gets to 0.0 around the edges.
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vec4 rgba = vec4(color, (1.0-edge)*opacity);
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gl_FragColor = rgba;
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}
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