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radeonsi: use optimal WD settings for primitive restart on Polaris

Browse source 
ported from Vulkan

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2016-04-08 12:57:43 +02:00
parent 46dba701d8
commit f6ff483646
1 changed files with 10 additions and 2 deletions
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12
src/gallium/drivers/radeonsi/si_state_draw.c
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@ -291,13 +291,21 @@ static unsigned si_get_ia_multi_vgt_param(struct si_context *sctx,
if (sctx->b.chip_class >= CIK) {
/* WD_SWITCH_ON_EOP has no effect on GPUs with less than
* 4 shader engines. Set 1 to pass the assertion below.
* The other cases are hardware requirements. */
* The other cases are hardware requirements.
*
* Polaris supports primitive restart with WD_SWITCH_ON_EOP=0
* for points, line strips, and tri strips.
*/
if (sctx->b.screen->info.max_se < 4 ||
prim == PIPE_PRIM_POLYGON ||
prim == PIPE_PRIM_LINE_LOOP ||
prim == PIPE_PRIM_TRIANGLE_FAN ||
prim == PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY ||
info->primitive_restart ||
(info->primitive_restart &&
(sctx->b.family < CHIP_POLARIS10 ||
(prim != PIPE_PRIM_POINTS &&
prim != PIPE_PRIM_LINE_STRIP &&
prim != PIPE_PRIM_TRIANGLE_STRIP))) ||
info->count_from_stream_output)
wd_switch_on_eop = true;