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#0  0x082fe1a0 in ISB_getshadow ()
#1  0x082f33a9 in shade_one_light ()
#2  0x082f40c0 in shade_lamp_loop ()
#3  0x082f5bb3 in shade_material_loop ()
#4  0x082f6183 in shadepixel ()
#5  0x082f6adc in shadepixel_sky ()
#6  0x082f7b73 in zbufshadeDA_tile ()
#7  0x082e73d1 in do_part_thread ()
#8  0xb7861341 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#9  0xb795c4ee in clone () from /lib/tls/i686/cmov/libc.so.6