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Use stencil test instead of tile mask approach #9012

Merged
merged 2 commits into from
Nov 30, 2019
Merged

Use stencil test instead of tile mask approach #9012

merged 2 commits into from
Nov 30, 2019

Commits on Nov 30, 2019

  1. Use stencil test instead of tile mask approach 

    Remove tile masks for raster. Rendering happens in Z-descending order.
All the tiles with the same Z use the same stencil value. Parent uses lower stencil value so that the area covered by children gets masked.
Stencil ref values continue range used in _tileClippingMaskIDs.
    @astojilj
    astojilj committed Nov 30, 2019
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  2. raster-masking test combined with vector. Refactor raster overlap. 

    Return map z -> StencilMode instead of using callbacks.
overlapping-vector uses vector layer between two raster to guard
against side effects when refactoring stencil usage.
    @astojilj
    astojilj committed Nov 30, 2019
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