https://bugs.freedesktop.org/show_bug.cgi?id=41659
--- Comment #7 from rem11_1999@yahoo.fr 2011-10-16 06:55:10 PDT --- i've updated mesa to latest commit, same result, tested with 7.11 same result. But with mesa 7.10.3 there are no more these corruptions
OpenGL vendor string: X.Org R300 Project OpenGL renderer string: Gallium 0.4 on ATI RV530 OpenGL version string: 2.1 Mesa 7.10.3 OpenGL shading language version string: 1.20
so regression introduced between 7.10.3 and 7.11.
With 7.10.3 there are some minor corruption like vertical lines on the left and grey square under the cursor but nothing major (screenshot3). I suspect I will file a bug for these after this bug.