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Styles with transparency are not rendered properly #25

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brendan-ward opened this issue Feb 11, 2019 · 0 comments
Closed

Styles with transparency are not rendered properly #25

brendan-ward opened this issue Feb 11, 2019 · 0 comments
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The issue has to do with the output from Mapbox GL having pre-multipled alpha values, whereas sharp expects un-premultipled values. The effect is that colors with transparency are much darker and less saturated than expected.

mapbox/mapbox-gl-native#9124

The fix is to un-premultiply the pixel values prior to exporting to PNG format.
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