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zink: handle device-local unsynchronized maps 

this is only possible when tc determines the buffer is not in use
and decides to return a pointer immediately, so just give back a staging
buffer

cc: mesa-stable

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15979>
This commit is contained in:
Mike Blumenkrantz 2022-04-15 13:25:00 -04:00 committed by Marge Bot
parent e509598470
commit d7256043b3
1 changed files with 9 additions and 0 deletions
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9
src/gallium/drivers/zink/zink_resource.c
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@ -1506,6 +1506,15 @@ zink_buffer_map(struct pipe_context *pctx,
ptr = map_resource(screen, res);
ptr = ((uint8_t *)ptr) + trans->offset;
}
} else if ((usage & PIPE_MAP_UNSYNCHRONIZED) && !res->obj->host_visible) {
trans->offset = box->x % screen->info.props.limits.minMemoryMapAlignment;
trans->staging_res = pipe_buffer_create(&screen->base, PIPE_BIND_LINEAR, PIPE_USAGE_STAGING, box->width + trans->offset);
if (!trans->staging_res)
goto fail;
struct zink_resource *staging_res = zink_resource(trans->staging_res);
res = staging_res;
ptr = map_resource(screen, res);
ptr = ((uint8_t *)ptr) + trans->offset;
}
if (!(usage & PIPE_MAP_UNSYNCHRONIZED)) {