DXT1n compression errors with cuda

[GoogleCodeExporter]

when compressing dxt1n with cuda hardware normalps packed have 4x4 errors
(messed up blocks). 

tested both debug and release builds and ran 
nvcompress -bc1n golfball_nm.tga
texture is 256x256 and packes fine wihtout such erorrs when using 
-fast or -nocuda.
errors seems to be semirandom, appearing on places similar to other places
in texture without errors so i would guess inputdata is not at fault.

running latest r447

using windows xp 64bit, visual studio 2005, latest nvidia drivers and 8800gt

Original issue reported on code.google.com by tomi.kiv...@gmail.com on 25 Feb 2008 at 3:34

[GoogleCodeExporter]

Thanks for reporting the issue, the new CUDA compressors are still 
experimental, but
I had not seen the errors that you describe. I'll keep the bug open and let you 
know
as soon as they become stable. 

Original comment by cast...@gmail.com on 26 Feb 2008 at 11:14

• Changed state: Started
• Added labels: Milestone-Release2.1

[GoogleCodeExporter]

BTW, if you could provide an example image that shows the problem that would be 
very
useful. I just fixed a bug that might be the origin of your problem, but I'm 
not sure
it's the same issue.

Original comment by cast...@gmail.com on 28 Feb 2008 at 3:30

[GoogleCodeExporter]

I was not able to reproduce the issue with any of my normal maps in any of my
systems. Closing.

Original comment by cast...@gmail.com on 17 Apr 2008 at 8:37

• Changed state: Invalid