All user interface text in Blender 2.55(alpha) and smooth fonts variations of Blender 2.49 is rendered invisible by recent build of Mesa on the r600 gallium driver.
Prerequisites: Mesa current git, any blender 2.55 alpha version including latest svn
Steps to reproduce: Run blender
Expected outcome: Full user interface with fonts correctly rendered.
Actual outcome: No user interface text visible.
git bisect identifies
Author: Keith Whitwell <firstname.lastname@example.org>
Date: Tue Nov 9 20:08:45 2010 +0000
r600: fix my pessimism about PIPE_TRANSFER_x flags
as the culprit. Rebasing to latest mesa git (master) with this commit reverted works as expected.
*** Bug 31615 has been marked as a duplicate of this bug. ***
The conditions for this failure appear to be related to sync uploads only (with or without readbacks is, at a guess, irrelevant). At any rate, commenting out the test to use a staged upload in this instance cause the missing text(ures) to reappear.
I'm suspicious that at the end of the big if( use_staging_upload ) block there's a call to r600_copy_to_staging_texture() in the case of PIPE_TRANSFER_READ but apparently no equivalent call for PIPE_TRANSFER_WRITE.
Please try again with git master.
Maybe commit d5aadf0d80e8c973ef5cf9d82e97f23f0e3c032b fixed this problem.
(In reply to comment #3)
> Please try again with git master.
> Maybe commit d5aadf0d80e8c973ef5cf9d82e97f23f0e3c032b fixed this problem.
I can confirm that this commit fixes the issue in XBMC (Bug 31615).
Confirmed, that commit fixes it. Closing.