(In reply to comment #25)
> Created attachment 100511 [details] [review]
> Check offset alignment before RENDER with a userptr
> 
> A more complete version of that patch, worth testing as well.

rendercheck 1.4
Render extension version 0.11
Window format: r8g8b8
Found server-supported format: a8
Found server-supported format: a8r8g8b8
Found server-supported format: x8r8g8b8
Found server-supported format: b8g8r8a8
Found server-supported format: b8g8r8x8
Found server-supported format: r8g8b8
Found server-supported format: b8g8r8
Found server-supported format: r5g5b5
Found server-supported format: b5g5r5
Found server-supported format: x1r5g5b5
Found server-supported format: x1b5g5r5
Found server-supported format: r5g6b5
Found server-supported format: b5g6r5
Found server-supported format: x8b8g8r8
Found server-supported format: x2r10g10b10
Found server-supported format: x2b10g10r10
Beginning dest coords test
dst coords test error of 255.0000 at (0, 0) --
           R     G     B     A
got:       1.000 0.000 0.000 1.000
expected:  1.000 1.000 1.000 1.000
dst coords test error of 255.0000 at (0, 1) --
           R     G     B     A
got:       0.000 0.000 0.000 1.000
expected:  1.000 1.000 1.000 1.000
dst coords test error of 255.0000 at (0, 2) --
           R     G     B     A
got:       1.000 0.000 0.000 1.000
expected:  1.000 1.000 1.000 1.000
dst coords test error of 255.0000 at (0, 4) --
           R     G     B     A
got:       0.000 0.000 0.000 1.000
expected:  1.000 1.000 1.000 1.000
dst coords test error of 255.0000 at (1, 1) --
           R     G     B     A
got:       0.000 0.000 0.000 1.000
expected:  1.000 0.000 0.000 1.000
dst coords test error of 255.0000 at (1, 2) --
           R     G     B     A
got:       1.000 1.000 1.000 1.000
expected:  1.000 0.000 0.000 1.000
dst coords test error of 255.0000 at (1, 3) --
           R     G     B     A
got:       1.000 1.000 1.000 1.000
expected:  1.000 0.000 0.000 1.000
dst coords test error of 255.0000 at (1, 4) --
           R     G     B     A
got:       0.000 0.000 0.000 1.000
expected:  1.000 1.000 1.000 1.000
dst coords test error of 255.0000 at (2, 1) --
           R     G     B     A
got:       1.000 1.000 1.000 1.000
expected:  1.000 0.000 0.000 1.000
dst coords test error of 255.0000 at (2, 2) --
           R     G     B     A
got:       1.000 1.000 1.000 1.000
expected:  1.000 0.000 0.000 1.000
dst coords test error of 255.0000 at (2, 3) --
           R     G     B     A
got:       0.000 0.000 0.000 1.000
expected:  1.000 0.000 0.000 1.000
dst coords test error of 255.0000 at (2, 4) --
           R     G     B     A
got:       0.000 0.000 0.000 1.000
expected:  1.000 1.000 1.000 1.000
dst coords test error of 255.0000 at (3, 2) --
           R     G     B     A
got:       1.000 1.000 1.000 1.000
expected:  1.000 0.000 0.000 1.000
dst coords test error of 255.0000 at (3, 3) --
           R     G     B     A
got:       0.000 0.000 0.000 1.000
expected:  1.000 0.000 0.000 1.000
dst coords test error of 255.0000 at (3, 4) --
           R     G     B     A
got:       0.000 0.000 0.000 1.000
expected:  1.000 1.000 1.000 1.000
dst coords test error of 255.0000 at (4, 1) --
           R     G     B     A
got:       1.000 0.000 0.000 1.000
expected:  1.000 1.000 1.000 1.000
dst coords test error of 255.0000 at (4, 3) --
           R     G     B     A
got:       0.000 0.000 0.000 1.000
expected:  1.000 1.000 1.000 1.000
dst coords test error of 255.0000 at (4, 4) --
           R     G     B     A
got:       0.000 0.000 0.000 1.000
expected:  1.000 1.000 1.000 1.000
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
xinit: connection to X server lost
      after 550 requests (550 known processed) with 0 events remaining.
xterm: fatal IO error 11 (Resource temporarily unavailable) or KillClient on X server ":0"
[1]+  Done                    xinit  (wd: /GFX/build/component/Xf86_video_intel/xf86-video-intel)
(wd now: /GFX/Test/Rendercheck/bin)