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st/nine: Use PIPE_MAP_ONCE for persistent buffers

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This enables radeonsi to really unmap on release,
which reduces virtual memory usage.

Do it only on 32 bits, as it can reduce performance if the
allocation is reused.

Signed-off-by: Axel Davy <davyaxel0@gmail.com>
Acked-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10160>
This commit is contained in:
Axel Davy
2021-03-13 22:39:28 +01:00
committed by Marge Bot
parent 7ac9c9c667
commit 5702b15cd9
1 changed files with 6 additions and 0 deletions
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src/gallium/frontends/nine/nine_buffer_upload.c
+6
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@@ -97,6 +97,9 @@ nine_upload_create_buffer_group(struct nine_buffer_upload *upload,
group->map = pipe_buffer_map_range(upload->pipe, group->resource,
0, upload->buffers_size,
PIPE_MAP_WRITE |
#ifdef PIPE_ARCH_X86
PIPE_MAP_ONCE |
#endif
PIPE_MAP_PERSISTENT |
PIPE_MAP_COHERENT,
&group->transfer);
@@ -228,6 +231,9 @@ nine_upload_create_buffer(struct nine_buffer_upload *upload,
buf->map = pipe_buffer_map_range(upload->pipe, buf->resource,
0, buffer_size,
PIPE_MAP_WRITE |
#ifdef PIPE_ARCH_X86
PIPE_MAP_ONCE |
#endif
PIPE_MAP_PERSISTENT |
PIPE_MAP_COHERENT,
&buf->transfer);