Fix compression bug in segmentation palette #3937
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Fixes: #3423
About
The modified segmentation material in #3053 used a wrong compression type on the palette texture, causing the colors to become inconsistent with the old seg_rgbs.txt. Compression should be HDR instead of Default, and the sampler type in SegmentationMaterial.uasset for the texture should be LinearColor instead of Color.
How Has This Been Tested?
With the script from #3423 (comment) (thanks @TidalPaladin !) - the output of this script should match the (flipped) values from https://microsoft.github.io/AirSim/seg_rgbs.txt.
Screenshots (if appropriate):
Before fix:
After fix:
Output of script vs. actual seg_rgb values: