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33 lines
910 B
Text
33 lines
910 B
Text
<@include gpu/Config.slh@>
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<$VERSION_HEADER$>
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// Generated on <$_SCRIBE_DATE$>
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//
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// Created by Bradley Austin Davis on 2016/07/05
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// Copyright 2013-2016 High Fidelity, Inc.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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layout(location = 0) in vec4 inColor;
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out vec4 _fragColor;
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void main(void) {
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// The incoming value actually ranges from -1 to 1, so modify it
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// so that it goes from 0 -> 1 -> 0 with the solid alpha being at
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// the center of the line
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float alpha = 1.0 - abs(inColor.a);
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// Convert from a linear alpha curve to a sharp peaked one
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alpha = pow(alpha, 10);
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// Drop everything where the curve falls off to nearly nothing
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if (alpha <= 0.05) {
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discard;
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}
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// Emit the color
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_fragColor = vec4(inColor.rgb, alpha);
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return;
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}
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