[Bug 34495] Selecting objects in Blender 2.56 slow with gallium r600 driver

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=34495

--- Comment #13 from Micael Dias <kam1kaz3 at gmail.com> 2011-06-25 22:18:46 PDT ---
I've been doing some debugging on this and found something odd.

I enabled the lp_build_printf call on auxiliary/draw/draw_llvm.c, function
generate_fetch() and noticed that when blender crashes, the output is ALWAYS
this:

...
vbuf index = 0, stride is 65484
vbuf index = 0, stride is 65496
vbuf index = 0, stride is 65508
vbuf index = 0, stride is 65520
vbuf index = 0, stride is 65532

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7ecf24e in draw_llvm_shader1 ()


It always crashes when stride is 65532 regardless of the scene I am using in
blender to try and crash it.
I should add that when it doesn't crash, there are times when stride goes a
little bit above that, but not much.

I'm not sure it helps in debugging the problem, but maybe it does...

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