[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 #5 from Pierre-Eric Pelloux-Prayer <pelloux at gmail.com> 2011-06-17 02:05:52 PDT ---
I can reproduce the crash as well.
Some additional notes :
- I'm using : HD4850, blender 2.57.2, mesa
fc8c4a3a7b92a1134cd3a9312063abba9e14b0fe
- with LIBGL_ALWAYS_SOFTWARE=1 => no crash
- here's the segfault backtrace :
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7eacf1c in draw_llvm_shader1 ()
(gdb) whe
#0  0x00007ffff7eacf1c in draw_llvm_shader1 ()
#1  0x00007fffe88f0c8b in llvm_pipeline_generic (middle=0x1f75ea0,
fetch_info=0x7ffffffd5df0, prim_info=0x7ffffffd5dc0) at
draw/draw_pt_fetch_shade_pipeline_llvm.c:246
#2  0x00007fffe88f0f51 in llvm_middle_end_linear_run (middle=0x1f75ea0,
start=4096, count=190, prim_flags=0) at
draw/draw_pt_fetch_shade_pipeline_llvm.c:364
#3  0x00007fffe8884d9b in vsplit_segment_simple_linear (vsplit=0x1f73050,
flags=0, istart=4096, icount=190) at draw/draw_pt_vsplit_tmp.h:237
#4  0x00007fffe88850a0 in vsplit_run_linear (frontend=0x1f73050, start=4096,
count=190) at draw/draw_split_tmp.h:61
#5  0x00007fffe887d246 in draw_pt_arrays (draw=0x1f145f0, prim=3, start=4096,
count=190) at draw/draw_pt.c:113
#6  0x00007fffe887de5b in draw_vbo (draw=0x1f145f0, info=0x7ffffffd5f80) at
draw/draw_pt.c:491
#7  0x00007fffe887dca6 in draw_arrays_instanced (draw=0x1f145f0, mode=3,
start=4096, count=190, startInstance=0, instanceCount=1) at draw/draw_pt.c:408
#8  0x00007fffe887dc1a in draw_arrays (draw=0x1f145f0, prim=3, start=4096,
count=190) at draw/draw_pt.c:376
#9  0x00007fffe8844a0d in st_feedback_draw_vbo (ctx=0x1eae500,
arrays=0x1f007f0, prims=0x1efee0c, nr_prims=9, ib=0x0, index_bounds_valid=1
'\001', min_index=0, max_index=4285) at state_tracker/st_draw_feedba
ck.c:262

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