Basis Universal v2.5 is nearing release with in-loop deblocking support using a standardized reconstruction operator. The filter uses 1 or 5 taps near ASTC block edges and is compatible with mipmapping and bilinear/trilinear filtering. It can run in a GPU pixel shader or during transcoding. The encoder's SCD stage simulates the exact deblocking filter the decoder will apply, optimizing compressed data accordingly. This significantly improves quality at low bitrates and makes large ASTC block sizes (10x8, 10x10, 12x10, 12x12) far more practical.
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