Roland Scheidegger wrote:
Donnie Berkholz wrote:
I recently updated Mesa from 6.4.1 to CVS HEAD, and discovered that the
UT2003 demo [1] didn't work anymore. With some help from aet, I finally
got some useful information out of it that suggests TNL as the likely
culprit:
(gdb) bt
#0 0xb3038ae5 in _mesa_align_free (ptr=0x0) at imports.c:192
#1 0xb308cdbd in dtr (stage=0xbf87c69c) at t_vb_vertex.c:248
#2 0xb3081ab6 in _tnl_sse_codegen_vertex_program (p=0x8fc80f8)
at t_vb_arbprogram_sse.c:1139
#3 0xb3080a5b in validate_vertex_program (ctx=0x92edc10,
stage=0x86ffa88) at t_vb_arbprogram.c:1130
#4 0xb3077ba3 in _tnl_run_pipeline (ctx=0x92edc10) at
t_pipeline.c:144
#5 0xb31302d1 in _tnl_draw_range_elements (ctx=0x92edc10, mode=52,
max_index=6, index_count=12, indices=0x8999f38) at t_array_api.c:105
#6 0xb3070154 in neutral_DrawRangeElements (mode=4, start=0, end=5,
count=12, type=5123, indices=0x8b64110) at vtxfmt_tmp.h:349
#7 0xb47caaeb in FOpenGLRenderInterface::DrawPrimitive ()
from /opt/ut2003-demo/System/OpenGLDrv.so
This looks very similar to
https://bugs.freedesktop.org/show_bug.cgi?id=5791
I think t_vb_arbprogram_sse.c is fairly broken on the trunk.
The emit_func[] array is indexed by program opcode, but the opcode
list was changed a couple months ago when the vertex and fragment
program code was unified.
It might be as simple as inserting emit_NOP entries at the right place.
A more robust way to init emit_func[] would be this:
emit_func[OPCODE_ABS] = emit_ABS;
emit_func[OPCODE_ADD] = emit_ADD;
...
Then adding/changing program opcodes wouldn't cause trouble.
I'm checking in some assertions to do some sanity checks.
-Brian
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