SceneryContext: Fix flickering issue when BVV LUTs update

scenerygraphics / scenery

Flexible VR Visualisation for Volumetric and Geometric Data on the Java VM, powered by Kotlin and Vulkan.

https://scenery.graphics

GNU Lesser General Public License v3.0

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Closed skalarproduktraum closed 6 months ago

skalarproduktraum commented 7 months ago

This PR:

fixes an issue where the volume rendering would flicker whenever the BVV LUT was updated, which is quite annoying
this fix double-buffers the LUT and waits for it to become available on the GPU before replacing the old one, fixing the flickering issue