fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2025-12-31 01:10:16 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

radeonsi: fix VM faults due NULL internal const buffers on CIK

Browse source 
They are harmless, but the interrupts do decrease performance.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97039

Cc: 12.0 <mesa-stable@lists.freedesktop.org>
This commit is contained in:
Marek Olšák 2016-08-18 15:25:51 +02:00
parent 577f85e2bb
commit 2c13abb491
1 changed files with 11 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
src/gallium/drivers/radeonsi/si_pipe.c
View file

@ -251,8 +251,8 @@ static struct pipe_context *si_create_context(struct pipe_screen *screen,
si_begin_new_cs(sctx);
r600_query_init_backend_mask(&sctx->b); /* this emits commands and must be last */
/* CIK cannot unbind a constant buffer (S_BUFFER_LOAD is buggy
* with a NULL buffer). We need to use a dummy buffer instead. */
/* CIK cannot unbind a constant buffer (S_BUFFER_LOAD doesn't skip loads
* if NUM_RECORDS == 0). We need to use a dummy buffer instead. */
if (sctx->b.chip_class == CIK) {
sctx->null_const_buf.buffer = pipe_buffer_create(screen, PIPE_BIND_CONSTANT_BUFFER,
PIPE_USAGE_DEFAULT, 16);
@ -267,6 +267,15 @@ static struct pipe_context *si_create_context(struct pipe_screen *screen,
}
}
si_set_rw_buffer(sctx, SI_HS_CONST_DEFAULT_TESS_LEVELS,
&sctx->null_const_buf);
si_set_rw_buffer(sctx, SI_VS_CONST_CLIP_PLANES,
&sctx->null_const_buf);
si_set_rw_buffer(sctx, SI_PS_CONST_POLY_STIPPLE,
&sctx->null_const_buf);
si_set_rw_buffer(sctx, SI_PS_CONST_SAMPLE_POSITIONS,
&sctx->null_const_buf);
/* Clear the NULL constant buffer, because loads should return zeros. */
sctx->b.clear_buffer(&sctx->b.b, sctx->null_const_buf.buffer, 0,
sctx->null_const_buf.buffer->width0, 0,