Module: Mesa
Branch: master
Commit: 44246fe99d4c880b70a58043624bf023237009f5
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=44246fe99d4c880b70a58043624bf023237009f5
Author: Axel Davy <axel.d...@ens.fr>
Date: Thu Feb 25 19:07:37 2016 +0100
st/nine: Fix Multithreading issue with MANAGED buffers
d3d calls are protected by mutexes, however if app is doing in
two threads:
Thread 1: buffer Lock
Thread 2: Draw call
Thread 1: writes data
Thread 1: Unlock
Then before this patch, the Draw call would begin to upload
the buffer.
Solves this by moving the moment we add the buffer to the queue
of things to upload (We move it from Lock time to Unlock time).
Cc: "11.2" <mesa-sta...@lists.freedesktop.org>
Signed-off-by: Axel Davy <axel.d...@ens.fr>
---
src/gallium/state_trackers/nine/buffer9.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/gallium/state_trackers/nine/buffer9.c
b/src/gallium/state_trackers/nine/buffer9.c
index 8efb4ce..6d5d9d6 100644
--- a/src/gallium/state_trackers/nine/buffer9.c
+++ b/src/gallium/state_trackers/nine/buffer9.c
@@ -178,7 +178,6 @@ NineBuffer9_Lock( struct NineBuffer9 *This,
if (!(Flags & D3DLOCK_READONLY)) {
if (!This->managed.dirty) {
assert(LIST_IS_EMPTY(&This->managed.list));
- list_add(&This->managed.list,
&This->base.base.device->update_buffers);
This->managed.dirty = TRUE;
This->managed.dirty_box = box;
} else {
@@ -232,8 +231,13 @@ NineBuffer9_Unlock( struct NineBuffer9 *This )
user_assert(This->nmaps > 0, D3DERR_INVALIDCALL);
if (This->base.pool != D3DPOOL_MANAGED)
This->pipe->transfer_unmap(This->pipe, This->maps[--(This->nmaps)]);
- else
+ else {
This->nmaps--;
+ /* TODO: Fix this to upload at the first draw call needing the data,
+ * instead of at the next draw call */
+ if (!This->nmaps && This->managed.dirty &&
LIST_IS_EMPTY(&This->managed.list))
+ list_add(&This->managed.list,
&This->base.base.device->update_buffers);
+ }
return D3D_OK;
}
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