.ASTC (the File Format): No Longer a Black Box

The basisu command line tool has a new option, -peek , which opens any standard ARM LDR/HDR .ASTC texture file , unpacks each block, and computes a bunch of statistics about the exact ASTC configurations the blocks used. This is how we found out that Intel's ispc_texcomp's ASTC encoder is, for all practical purposes, broken.…