Just noticed my color ID texture gets blurry when overriding its max size in the Asset Importer. Setting filter mode to Point doesn't help. Is there any way to get a smaller resolution and keep hard pixel edges? Currently I resize it in Photoshop with Resampling set to Nearest Neighbor :)
Yes, today clamping max texture size in unity always downsamples the texture with something like a Mitchell filter, and ignores the GPU filtering settings. So you have to do that externally. Maybe worth filing a bug so that someone would remember to fix it one day.
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Simon Kratz