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iris: Don't memset the clear color BO during aux init

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The clear color BO is sometimes getting unnecessarily zeroed. For
example, if the resource will be fast-cleared, the app may pick a
non-zero color, causing the initial memset to be unneeded.  So, skip the
memset and mark the clear color as unknown if it has not been freshly
allocated. For now, we leave the memsets on imported dmabufs alone for
simplicity.

On non-small BAR ACM systems, this also allows internal resources using
compression to be created without executing an IOCTL for memory mapping.

Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26675>
This commit is contained in:
Nanley Chery 2023-04-21 14:55:26 -07:00 • committed by Marge Bot
parent 68d56b15d7
commit 45d7764a06
1 changed files with 2 additions and 16 deletions
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18
src/gallium/drivers/iris/iris_resource.c
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@ -1011,21 +1011,6 @@ iris_resource_init_aux_buf(struct iris_screen *screen,
0, res->aux.extra_aux.surf.size_B);
}
unsigned clear_color_size = iris_get_aux_clear_color_state_size(screen, res);
if (clear_color_size > 0) {
if (iris_bo_mmap_mode(res->bo) != IRIS_MMAP_NONE) {
if (!map)
map = iris_bo_map(NULL, res->bo, MAP_WRITE | MAP_RAW);
if (!map)
return false;
/* Zero the indirect clear color to match ::fast_clear_color. */
memset((char *)map + res->aux.clear_color_offset, 0, clear_color_size);
} else {
res->aux.clear_color_unknown = true;
}
}
if (map)
iris_bo_unmap(res->bo);
@ -1035,9 +1020,10 @@ iris_resource_init_aux_buf(struct iris_screen *screen,
map_aux_addresses(screen, res, res->internal_format, 0);
}
if (clear_color_size > 0) {
if (iris_get_aux_clear_color_state_size(screen, res) > 0) {
res->aux.clear_color_bo = res->bo;
iris_bo_reference(res->aux.clear_color_bo);
res->aux.clear_color_unknown = !res->aux.clear_color_bo->zeroed;
}
return true;