Tiger Woods PGA Tour 10 - strange striped backgrounds in UI windows (DXT5 issue?)

[hrydgard]

Reported by djfil007 on Discord (reported on OpenGL, Android, but also reproduces on other platforms). Can be seen in the compat reports:

https://report.ppsspp.org/game/ULUS10420_1.00#report-compat-686272

GE frame dump: tiger ULUS10420.zip

With 2x texture scaling:

[hrydgard]

The texture used when drawing the striped UI is a 2x32 DXT5 texture, at 0x08c65f50, draw 21979 and 21980, plus some more. Might be some odd behavior there - I think we try to decode 4x4 blocks into a stride of 2, and mayhem happens as the lines clash with each other.

It's not intended to be stripy, btw: https://www.youtube.com/watch?v=cszpSxjXEo8

[DjFIL007]

Thanks again for creating this.

above screenshot was shared by another user on https://report.ppsspp.org/game/ULUS10420_1.00#report-compat-285595 (they were back on 2019-09-02 version v1.8.0... but on a windows device... however it shows the intended result)

[hrydgard]

Yeah, indeed, hm, that's interesting.

Also, looking at the DXT5 code we do seem to handle small widths correctly - at least it looks like it.

[hrydgard]

It was a bug in the DXT5 decoder. fixed.