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zink: lock buffer age when chundering swapchain for readback

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this sequence doesn't count as SwapBuffers calls, so age cannot be modified

Fixes: c123ab2137 ("kopper: Implement {EGL,GLX}_EXT_buffer_age")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27553>
(cherry picked from commit c3a2e2f9f2e4be1e11792c01f3b9a2748dce6acb)
This commit is contained in:
Mike Blumenkrantz 2024-02-09 10:38:59 -05:00 • committed by Eric Engestrom
parent 850c9dbdc9
commit cf0ed80d3a
3 changed files with 17 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

2
.pick_status.json
View file

@ -194,7 +194,7 @@
"description": "zink: lock buffer age when chundering swapchain for readback",
"nominated": true,
"nomination_type": 1,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": "c123ab213797c1d0d2a34e57c503428261324cc6",
"notes": null

19
src/gallium/drivers/zink/zink_kopper.c
View file

@ -812,11 +812,13 @@ zink_kopper_present_queue(struct zink_screen *screen, struct zink_resource *res)
* * Any other color buffers' ages are incremented by 1 if
* their age was previously greater than 0.
*/
for (int i = 0; i < cdt->swapchain->num_images; i++) {
if (i == res->obj->dt_idx)
cdt->swapchain->images[i].age = 1;
else if (cdt->swapchain->images[i].age > 0)
cdt->swapchain->images[i].age += 1;
if (!cdt->age_locked) {
for (int i = 0; i < cdt->swapchain->num_images; i++) {
if (i == res->obj->dt_idx)
cdt->swapchain->images[i].age = 1;
else if (cdt->swapchain->images[i].age > 0)
cdt->swapchain->images[i].age += 1;
}
}
if (util_queue_is_initialized(&screen->flush_queue)) {
p_atomic_inc(&cpi->swapchain->async_presents);
@ -873,14 +875,17 @@ zink_kopper_acquire_readback(struct zink_context *ctx, struct zink_resource *res
if (++cdt->readback_counter >= ZINK_READBACK_THRESHOLD)
kopper_ensure_readback(screen, res);
while (res->obj->dt_idx != last_dt_idx) {
cdt->age_locked = true;
if (res->obj->dt_idx != UINT32_MAX && !zink_kopper_present_readback(ctx, res))
break;
cdt->age_locked = true;
do {
ret = kopper_acquire(screen, res, 0);
} while (!is_swapchain_kill(ret) && (ret == VK_NOT_READY || ret == VK_TIMEOUT));
if (is_swapchain_kill(ret)) {
kill_swapchain(ctx, res);
*readback = NULL;
cdt->age_locked = false;
return false;
}
}
@ -936,6 +941,10 @@ zink_kopper_present_readback(struct zink_context *ctx, struct zink_resource *res
simple_mtx_lock(&screen->semaphores_lock);
util_dynarray_append(&screen->semaphores, VkSemaphore, acquire);
simple_mtx_unlock(&screen->semaphores_lock);
struct kopper_displaytarget *cdt = res->obj->dt;
cdt->age_locked = false;
return zink_screen_handle_vkresult(screen, error);
}

2
src/gallium/drivers/zink/zink_kopper.h
View file

@ -95,6 +95,8 @@ struct kopper_displaytarget
bool is_kill;
VkPresentModeKHR present_mode;
unsigned readback_counter;
bool age_locked; //disables buffer age during readback
};
struct zink_context;