http://bugs.freedesktop.org/show_bug.cgi?id=13142
Summary: blender crash in triangle_twoside() on Unichrome
[patch]
Product: Mesa
Version: CVS
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/Unichrome
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
With Mesa git, blender has been segfaulting on startup on a Unichrome for a
long time now. After seeing bug #12164, applying a patch analoguous to
attachment #11723 avoids the segfault. There are probably more changes needed,
but the patch works for me and does not seem to affect other OpenGL programs.
This was the backtrace from the blender segfault:
#0 0xb6bc012e in triangle_twoside (ctx=0x8984c00, e0=1, e1=2, e2=0)
at ../../../../../src/mesa/tnl_dd/t_dd_tritmp.h:202
#1 0xb6c7a80f in _tnl_render_poly_verts (ctx=0x8984c00, start=0, count=32,
flags=57) at tnl/t_vb_rendertmp.h:313
#2 0xb6c7ba82 in run_render (ctx=0x8984c00, stage=0x89d0604)
at tnl/t_vb_render.c:320
#3 0xb6c72a47 in _tnl_run_pipeline (ctx=0x8984c00) at tnl/t_pipeline.c:158
#4 0xb6bd5e16 in viaRunPipeline (ctx=0x8984c00) at via_tris.c:1160
#5 0xb6c73797 in _tnl_draw_prims (ctx=0x8984c00, arrays=0x89d0848,
prim=0x89bd38c, nr_prims=1, ib=0x0, min_index=3218897200,
max_index=2997452832) at tnl/t_draw.c:400
#6 0xb6c6a37f in vbo_exec_vtx_flush (exec=0x89bd268) at vbo/vbo_context.h:87
#7 0xb6c646a8 in vbo_exec_wrap_buffers (exec=0x89bd268)
at vbo/vbo_exec_api.c:79
#8 0xb6c64abd in vbo_exec_wrap_upgrade_vertex (exec=0x89bd268, attr=3,
newsz=4) at vbo/vbo_exec_api.c:210
#9 0xb6c64dee in vbo_exec_fixup_vertex (ctx=0x0, attr=3, sz=4)
at vbo/vbo_exec_api.c:318
#10 0xb6c65d8a in vbo_Color4f (x=0, y=0, z=0, w=0) at vbo/vbo_attrib_tmp.h:163
#11 0xb6d1110b in loopback_Color4ub_f (red=0 '\0', green=0 '\0', blue=0 '\0',
alpha=225 '�') at main/api_loopback.c:228
#12 0x080de4b1 in BIF_ThemeColorShadeAlpha ()
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