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Build # 15724051299

Build Type

Pull #4376

github

Committed by 10110111

Commit Message

Fix z fighting of HiPS levels

When a tile is drawn in a planetary survey, and then its child of a
higher level is drawn over, we can often observe the lower-level tile
shining through the higher-level one, and the shape that shines through
depends on the position of the planet, which resembles z fighting.

To combat this, we now draw only the deepest HiPS level requested for
the current zoom level, substituting lower-resolution textures for the
tiles whose native-resolution textures haven't been loaded yet.

This makes it much harder to support fading between levels, so fading
support is removed.

Pull Request Pull Request #4376: Fix z fighting of HiPS levels

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