Some monochromatic areas represented better with Photoshop plugin than nvcompress.

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Create a 256x256 tga with RGB 29,29,31.
2. Compress using both the nVidia Photoshop plugin, as well as the
command-line tool nvcompress.  DXT5 (bc3), nomips.

What is the expected output? What do you see instead?

Output from Photoshop plugin is a monochromatic image of 30, 29, 32. 
Output from command-line tool is 33, 28, 33.  I expect to see equivalent or
better results from the command-line tool, but in this case the Photoshop
plugin delivers superior results.

What version of the product are you using? On what operating system?

2.0.1 on Windows XP.

Please provide any additional information below.

Original issue reported on code.google.com by matthew....@gmail.com on 29 Apr 2008 at 11:46

[GoogleCodeExporter]

This is a known problem. It's fixed in trunk for the CPU compressors, and I'm 
in the
process of fixing it for the CUDA compressors as well. I'll keep the bug open to
inform you about my progress.

Original comment by cast...@gmail.com on 30 Apr 2008 at 6:55

• Changed state: Started

[GoogleCodeExporter]

Original comment by cast...@gmail.com on 30 Apr 2008 at 6:57

• Added labels: Milestone-Release2.0

[GoogleCodeExporter]

The CUDA compressors support single color optimal compression now. This is only 
fixed
in trunk, but I'll backport the fix back to 2.0, and it will be in the 2.0.3 
release.

Original comment by cast...@gmail.com on 6 May 2008 at 7:55

• Changed state: Fixed