#0  0x01ac1744 in triangle_twoside (ctx=0x8f89078, e0=6, e1=9, e2=8)
    at ../../../../../src/mesa/tnl_dd/t_dd_tritmp.h:202
#1  0x01b5b1d6 in _tnl_render_poly_elts (ctx=0x8f89078, start=0, count=3,
    flags=48) at tnl/t_vb_rendertmp.h:313
#2  0x01ab2a2b in intelRenderClippedPoly (ctx=0x8f89078, elts=0xbfda2d5c, n=3)
    at intel_tris.c:713
#3  0x01b56927 in clip_quad_4 (ctx=0x8f89078, v0=<value optimized out>,
    v1=<value optimized out>, v2=2, v3=3, mask=31 '\037')
    at tnl/t_vb_cliptmp.h:281
#4  0x01b586d9 in clip_render_quads_verts (ctx=0x8f89078, start=0, count=4,
    flags=55) at tnl/t_vb_rendertmp.h:338
#5  0x01b5b762 in run_render (ctx=0x8f89078, stage=0x8fc940c)
    at tnl/t_vb_render.c:320
#6  0x01b5283f in _tnl_run_pipeline (ctx=0x8f89078) at tnl/t_pipeline.c:158
#7  0x01ab2979 in intelRunPipeline (ctx=0x8f89078) at intel_tris.c:895
#8  0x01b52d9e in _tnl_draw_prims (ctx=0x8f89078, arrays=0x8fb7600,
    prim=0x8fb615c, nr_prims=1, ib=0x0, min_index=0, max_index=3)
    at tnl/t_draw.c:402
#9  0x01b4b3bc in vbo_exec_vtx_flush (exec=0x8fb6038)
    at vbo/vbo_exec_draw.c:215
#10 0x01b46b48 in vbo_exec_wrap_buffers (exec=0x8fb6038)
    at vbo/vbo_exec_api.c:80
#11 0x01b46c9c in vbo_exec_fixup_vertex (ctx=<value optimized out>, attr=3,
    sz=150507640) at vbo/vbo_exec_api.c:218
#12 0x01b49f78 in vbo_Color4f (x=1, y=1, z=1, w=1) at vbo/vbo_attrib_tmp.h:163
#13 0x00147ace in raydium_rendering_prepare_texture_unit (tu=33984, tex=6)
    at raydium/render.c:149
#14 0x00148385 in raydium_rendering_internal_prepare_texture_render (tex=6)
    at raydium/render.c:222
#15 0x00148b7f in raydium_sky_box_render (x=0.100000001, y=0.100000001, z=0)
    at raydium/sky.c:101
#16 0x0012b9ae in raydium_camera_internal (x=0.100000001, y=0.100000001, z=0)
    at raydium/camera.c:108
#17 0x0012ba9a in raydium_camera_look_at (x=0.100000001, y=0.100000001, z=0,
    x_to=0, y_to=-1, z_to=0) at raydium/camera.c:154
#18 0x0805170c in display () at mania_drive.c:2177
#19 0x0015b972 in glutMainLoop () at raydium/myglut.c:59
#20 0x0012ae64 in raydium_callback (loop=0x8051450) at raydium/callback.c:86
#21 0x080539de in main (argc=150421344, argv=0x8fb36b8) at mania_drive.c:2601
#22 0x00ae4390 in __libc_start_main () from /lib/libc.so.6
#23 0x0804b8c1 in _start ()