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zink: add TRANSFER_WRITE -> HOST_READ sync to end of batch

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this is technically required by spec, even though at a practical level
it probably has no effect

cc: mesa-stable

(cherry picked from commit 3ba275aa70)

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40359>
This commit is contained in:
Mike Blumenkrantz 2026-02-25 09:31:18 -05:00 • committed by Eric Engestrom
parent 5a61e04572
commit 0486f6bf8b
2 changed files with 18 additions and 1 deletions
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2
.pick_status.json
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@ -6134,7 +6134,7 @@
"description": "zink: add TRANSFER_WRITE -> HOST_READ sync to end of batch",
"nominated": true,
"nomination_type": 1,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null,
"notes": null

17
src/gallium/drivers/zink/zink_batch.c
View file

@ -701,6 +701,23 @@ submit_queue(void *data, void *gdata, int thread_index)
};
if (si[ZINK_SUBMIT_CMDBUF].waitSemaphoreCount)
si[ZINK_SUBMIT_CMDBUF].pNext = &sem_submit;
{
VkCommandBuffer sync_cmdbuf = bs->has_work ? bs->cmdbuf :
bs->has_reordered_work ? bs->reordered_cmdbuf :
bs->has_unsync ? bs->unsynchronized_cmdbuf :
VK_NULL_HANDLE;
if (sync_cmdbuf) {
VkMemoryBarrier mb;
mb.sType = VK_STRUCTURE_TYPE_MEMORY_BARRIER;
mb.pNext = NULL;
mb.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
mb.dstAccessMask = VK_ACCESS_HOST_READ_BIT;
VKSCR(CmdPipelineBarrier)(sync_cmdbuf,
VK_PIPELINE_STAGE_TRANSFER_BIT,
VK_PIPELINE_STAGE_HOST_BIT,
0, 1, &mb, 0, NULL, 0, NULL);
}
}
VkCommandBuffer cmdbufs[3];
unsigned c = 0;
if (bs->has_unsync)