Mesa (master): radeonsi/ngg: add VGT_FLUSH when enabling fast launch
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Wed Feb 5 10:50:20 UTC 2020
Module: Mesa
Branch: master
Commit: 3da91b3327fb93d0364c0ca9d0216f695160831d
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=3da91b3327fb93d0364c0ca9d0216f695160831d
Author: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer at amd.com>
Date: Thu Jan 30 12:16:46 2020 +0100
radeonsi/ngg: add VGT_FLUSH when enabling fast launch
Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/2418
Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/2426
Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/2434
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3675>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3675>
---
src/gallium/drivers/radeonsi/si_state_draw.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c
index 2f87896ead6..96fa59145ae 100644
--- a/src/gallium/drivers/radeonsi/si_state_draw.c
+++ b/src/gallium/drivers/radeonsi/si_state_draw.c
@@ -2080,6 +2080,11 @@ static void si_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *i
}
if (ngg_culling != sctx->ngg_culling) {
+ /* Insert a VGT_FLUSH when enabling fast launch changes to prevent hangs.
+ * See issues #2418, #2426, #2434
+ */
+ if (ngg_culling & SI_NGG_CULL_GS_FAST_LAUNCH_ALL)
+ sctx->flags |= SI_CONTEXT_VGT_FLUSH;
sctx->ngg_culling = ngg_culling;
sctx->do_update_shaders = true;
}
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