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wsi/x11: Don't allow signal_present_id to rewind.

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If present ID is 0, we should consider it to be ignored.
Avoids a theoretical problem when using IMMEDIATE mode with present ID
where some images don't set present ID.

Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
Reviewed-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25178>
This commit is contained in:
Hans-Kristian Arntzen
2023-09-12 14:31:14 +02:00
committed by Marge Bot
parent 08fee190aa
commit 85192dcfc6
1 changed files with 2 additions and 1 deletions
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src/vulkan/wsi/wsi_common_x11.c
+2 -1
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@@ -1146,7 +1146,8 @@ static void x11_notify_pending_present(struct x11_swapchain *swapchain,
/* It is possible that an IDLE is observed before PRESENT_COMPLETE when
* not flipping. In this case, reading image->present_id might be a race
* in the FIFO management thread. */
image->signal_present_id = image->present_id;
if (image->present_id)
image->signal_present_id = image->present_id;
}
static void x11_swapchain_notify_error(struct x11_swapchain *swapchain, VkResult result)