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gallium/u_threaded: late alloc cpu_storage

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Instead of allocating cpu_storage in threaded_resource_init, defer the
allocation to first use (in tc_buffer_map).
This avoids needless memory allocation if tc_buffer_disable_cpu_storage is
called before tc_buffer_map.

map_buffer_alignment is stored and serves as a "can cpu_storage be used" flag.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15074>
This commit is contained in:
Pierre-Eric Pelloux-Prayer
2022-02-18 10:28:58 +01:00
parent 7070178dfd
commit cd0ef9b3f4
10 changed files with 39 additions and 30 deletions
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2
src/gallium/drivers/crocus/crocus_resource.c
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@@ -365,7 +365,7 @@ crocus_alloc_resource(struct pipe_screen *pscreen,
res->base.b.screen = pscreen;
res->orig_screen = crocus_pscreen_ref(pscreen);
pipe_reference_init(&res->base.b.reference, 1);
threaded_resource_init(&res->base.b, false, 0);
threaded_resource_init(&res->base.b, false);
if (templ->target == PIPE_BUFFER)
util_range_init(&res->valid_buffer_range);