Merge pull request #84 from Daverball/hue-shader-fix
hue shader turns pure white pixels black on some GPUs.
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d18e3e6a53
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@ -29,7 +29,11 @@ void main ()
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/* Make the user's adjustments */
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/* Make the user's adjustments */
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hue += hueAdjust;
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hue += hueAdjust;
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// Convert back to YIQ
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/* Remember old I and color */
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float IOriginal = I;
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vec4 coOriginal = color;
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/* Convert back to YIQ */
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Q = chroma * sin (hue);
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Q = chroma * sin (hue);
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I = chroma * cos (hue);
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I = chroma * cos (hue);
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@ -40,5 +44,5 @@ void main ()
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color.b = dot (yIQ, kYIQToB);
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color.b = dot (yIQ, kYIQToB);
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/* Save the result */
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/* Save the result */
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gl_FragColor = color;
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gl_FragColor = (IOriginal == 0.0) ? coOriginal : color;
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}
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}
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