Hi,
while I was trying to understand the vtxfmt mesa code and poking around
with gdb I noticed that the neutral vtxfmt wrapper gets restored quite
often. I tracked it to radeonFlushVertices where
_mesa_install_exec_vtxfmt( ctx, &rmesa->vb.vtxfmt ) is called if the
FLUSH_UPDATE_CURRENT flag is set. _mesa_install_exec_vtxfmt in turn sets
ctx->TnlModule.Current to the new exec vertex format and calls
_mesa_restore_exec_vtxfmt( ctx ) which restores the neutral wrapper. Is
this really what was intended here?
The only place I could find where the FLUSH_UPDATE_CURRENT flag is set
in the radeon driver is in radeon_vtxfmt_c.c and there the Exec dispatch
table is modified directly. So there should be no need for reinstalling
the vertex format.
Felix
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