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Raster optimization: how deep to lookup for parent for fade #9062

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Raster optimization: how deep to lookup for parent for fade #9062

wants to merge 1 commit into from

Commits on Dec 4, 2019

  1. Raster optimization: how deep to lookup for parent for fade 

    Raster optimization: how deep to lookup for parent for fade

Avoid sequential lookup from current zoom all the way to zoom level 0 as it affects performance.

Do the same approach as used in SourceCache.update when calculating retained raster tiles `const minCoveringZoom = Math.max(idealZ - SourceCache.maxOverzooming, sourceCache.getSource().minzoom);`.

If layer.paint.get('raster-fade-duration') is 0, no need to calculate parent since it is anyway ignored in getFadeValues.
    @astojilj
    astojilj committed Dec 4, 2019
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