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wolfpld / etcpak

The fastest ETC compressor on the planet
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Heuristic compression mode selector #17

Closed m1awicki closed 3 years ago

m1awicki commented 3 years ago

Description

This change introduces heuristic compression mode selection mechanism. It is based on patch and publication of Jae-Ho Nah.

General diff between images compressed using new and old compression mode selection mechanism:

result23 result03 result05 result20

Detailed comparison of images compressed using new compression mode selector (new) with current implementation (old):

kodim03_cmp Image: kodim03.png

kodim20_cmp Image: kodim20.png

wolfpld commented 3 years ago

Some performance numbers (Mpx/s):

ST MT HST HMT
ETC1 407 6790 408 6699
ETC2 272 4640 397 6532
RGBA 207 3395 285 4351

ST - single thread MT - multi thread H - heuristic