Bug 25916

Summary: floating point texture components reversed
Product: Mesa Reporter: Pierre Ossman <pierre-bugzilla>
Component: Drivers/DRI/R600Assignee: Default DRI bug account <dri-devel>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: medium    
Version: git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:

Description Pierre Ossman 2010-01-06 08:29:23 UTC 
All floating point textures seem to get their coordinates inverted. I don't know if this is a generic mesa bug or something specific to r600 as swrast doesn't support float textures yet. Works fine with fglrx though.

I've confirmed the issue by using the exact same program and just switching between a GL_RGBA16F_ARB and a GL_RGBA texture. The first gets both the s and t coordinate inverted and the second works fine.
Comment 1 Alex Deucher 2010-01-06 08:48:07 UTC 
The swizzles may be wrong for some texture formats.  See r600GetTexFormat() in r600_texstate.c.
Comment 2 Pierre Ossman 2010-01-06 09:22:31 UTC 
As Alex guessed, it was a swizzling problem, not a coordinate one (the texture I was using made the it more or less impossible to tell the difference). Patch has been sent to Alex, and is also available here for a while:

http://pastebin.com/m72ead66
Comment 3 Alex Deucher 2010-01-06 09:46:15 UTC 
pushed: c9befda13a000f7ad2221e957615c909bff279f8

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