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Viewing changes to src/Ubuntu/Components/plugin/shaders/shapeoverlay.frag

  • Committer: Zsombor Egri
  • Date: 2015-11-16 06:35:05 UTC
  • mfrom: (1664.1.1 listitemSelectModeBugs)
  • Revision ID: zsombor.egri@canonical.com-20151116063505-cwn2qfks7qzk10g9
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src/Ubuntu/Components/plugin/shaders/shapeoverlay.frag
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        // Get the anti-aliased and resolution independent shape mask using distance fields.
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        lowp float distanceMin = abs(dist) * -distanceAA + 0.5;
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        lowp float distanceMax = abs(dist) * distanceAA + 0.5;
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        lowp float mask = smoothstep(distanceMin, distanceMax, shapeData[yCoord <= 0.0 ? 0 : 1]);
 
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        lowp int shapeSide = yCoord <= 0.0 ? 0 : 1;
 
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        lowp float mask = smoothstep(distanceMin, distanceMax, shapeData[shapeSide]);
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        // Get the shadow color outside of the shape mask.
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        lowp float shadow = (shapeData.b * -mask) + shapeData.b;  // -ab + a = a(1 - b)
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        // Mask the current color then blend the shadow over the resulting color. We simply use