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zink: use IMMUTABLE for dummy xfb buffer 

this is never getting read back or anything so don't waste BAR allocation

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13849>
This commit is contained in:
Mike Blumenkrantz 2021-11-17 16:46:49 -05:00 committed by Marge Bot
parent 1eb2f0d41e
commit 5f140a723d
1 changed files with 1 additions and 1 deletions
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2
src/gallium/drivers/zink/zink_context.c
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@ -4182,7 +4182,7 @@ zink_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
if (!ctx->dummy_vertex_buffer)
goto fail;
ctx->dummy_xfb_buffer = pipe_buffer_create(&screen->base,
PIPE_BIND_STREAM_OUTPUT, PIPE_USAGE_DEFAULT, sizeof(data));
PIPE_BIND_STREAM_OUTPUT, PIPE_USAGE_IMMUTABLE, sizeof(data));
if (!ctx->dummy_xfb_buffer)
goto fail;
for (unsigned i = 0; i < ARRAY_SIZE(ctx->dummy_surface); i++) {