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nouveau: allow invalidating coherent/persistent buffer backings

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This is needed to support the core's usage of coherent buffers for
glVertex-style input. The reason why this was disallowed is that any
mappings will be invalidated. Let the state tracker worry about that,
and just reallocate when we're told.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Cc: mesa-stable@lists.freedesktop.org
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5276>
(cherry picked from commit 6e1c47b98d)
This commit is contained in:
Ilia Mirkin 2020-05-30 02:47:42 -04:00 • committed by Eric Engestrom
parent 8a039060c0
commit fdd9b31fc1
2 changed files with 1 additions and 6 deletions
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2
.pick_status.json
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@ -3235,7 +3235,7 @@
"description": "nouveau: allow invalidating coherent/persistent buffer backings",
"nominated": true,
"nomination_type": 0,
"resolution": 0,
"resolution": 1,
"master_sha": null,
"because_sha": null
},

5
src/gallium/drivers/nouveau/nouveau_buffer.c
View file

@ -850,11 +850,6 @@ nouveau_buffer_invalidate(struct pipe_context *pipe,
if (unlikely(buf->base.bind & PIPE_BIND_SHARED))
return;
/* We can't touch persistent/coherent buffers */
if (buf->base.flags & (PIPE_RESOURCE_FLAG_MAP_PERSISTENT |
PIPE_RESOURCE_FLAG_MAP_COHERENT))
return;
/* If the buffer is sub-allocated and not currently being written, just
* wipe the valid buffer range. Otherwise we have to create fresh
* storage. (We don't keep track of fences for non-sub-allocated BO's.)