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vkswapper: fix up display synchronization

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Use the semaphores in the correct place, before and after the submission for
acquiring and presenting the swapchain buffer.

Waiting on the fence that only signals the command buffer completion rather than
the completion of the presentation is racy with the destruction of the vulkan
buffers associated with that image.  Wait on the device to be idle instead after
presenting.
This commit is contained in:
Matthew Waters 2016-05-05 23:18:11 +10:00
parent 267588fb5e
commit 77f6e253e1
1 changed files with 28 additions and 27 deletions
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55
ext/vulkan/vkswapper.c
View file

@ -454,6 +454,7 @@ gst_vulkan_swapper_get_supported_caps (GstVulkanSwapper * swapper,
gst_structure_set_value (s, "format", &list);
g_value_unset (&list);
}
{
guint32 max_dim = swapper->device->gpu_props.limits.maxImageDimension2D;
@ -798,7 +799,6 @@ gst_vulkan_swapper_set_caps (GstVulkanSwapper * swapper, GstCaps * caps,
struct cmd_data
{
VkCommandBuffer cmd;
VkFence fence;
GDestroyNotify notify;
gpointer data;
};
@ -888,10 +888,6 @@ _build_render_buffer_cmd (GstVulkanSwapper * swapper, guint32 swap_idx,
cmd_data->cmd = cmd;
cmd_data->notify = NULL;
if (!_new_fence (swapper->device, &cmd_data->fence, error)) {
return FALSE;
}
return TRUE;
}
@ -899,7 +895,8 @@ static gboolean
_render_buffer_unlocked (GstVulkanSwapper * swapper,
GstBuffer * buffer, GError ** error)
{
VkSemaphore semaphore = { 0, };
VkSemaphore acquire_semaphore = { 0, };
VkSemaphore present_semaphore = { 0, };
VkSemaphoreCreateInfo semaphore_info = { 0, };
VkPresentInfoKHR present;
struct cmd_data cmd_data = { 0, };
@ -926,18 +923,18 @@ _render_buffer_unlocked (GstVulkanSwapper * swapper,
reacquire:
err = vkCreateSemaphore (swapper->device->device, &semaphore_info,
NULL, &semaphore);
NULL, &acquire_semaphore);
if (gst_vulkan_error_to_g_error (err, error, "vkCreateSemaphore") < 0)
goto error;
err =
swapper->AcquireNextImageKHR (swapper->device->device,
swapper->swap_chain, -1, semaphore, VK_NULL_HANDLE, &swap_idx);
swapper->swap_chain, -1, acquire_semaphore, VK_NULL_HANDLE, &swap_idx);
/* TODO: Deal with the VK_SUBOPTIMAL_KHR and VK_ERROR_OUT_OF_DATE_KHR */
if (err == VK_ERROR_OUT_OF_DATE_KHR) {
GST_DEBUG_OBJECT (swapper, "out of date frame acquired");
vkDestroySemaphore (swapper->device->device, semaphore, NULL);
vkDestroySemaphore (swapper->device->device, acquire_semaphore, NULL);
if (!_swapchain_resize (swapper, error))
goto error;
goto reacquire;
@ -949,6 +946,11 @@ reacquire:
if (!_build_render_buffer_cmd (swapper, swap_idx, buffer, &cmd_data, error))
goto error;
err = vkCreateSemaphore (swapper->device->device, &semaphore_info,
NULL, &present_semaphore);
if (gst_vulkan_error_to_g_error (err, error, "vkCreateSemaphore") < 0)
goto error;
{
VkSubmitInfo submit_info = { 0, };
VkPipelineStageFlags stages = VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT;
@ -956,24 +958,23 @@ reacquire:
submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
submit_info.pNext = NULL;
submit_info.waitSemaphoreCount = 1;
submit_info.pWaitSemaphores = &semaphore;
submit_info.pWaitSemaphores = &acquire_semaphore;
submit_info.pWaitDstStageMask = &stages;
submit_info.commandBufferCount = 1;
submit_info.pCommandBuffers = &cmd_data.cmd;
submit_info.signalSemaphoreCount = 0;
submit_info.pSignalSemaphores = NULL;
submit_info.signalSemaphoreCount = 1;
submit_info.pSignalSemaphores = &present_semaphore;
err =
vkQueueSubmit (swapper->queue->queue, 1, &submit_info, cmd_data.fence);
err = vkQueueSubmit (swapper->queue->queue, 1, &submit_info, NULL);
if (gst_vulkan_error_to_g_error (err, error, "vkQueueSubmit") < 0) {
return FALSE;
goto error;
}
}
present.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
present.pNext = NULL;
present.waitSemaphoreCount = 0;
present.pWaitSemaphores = NULL;
present.waitSemaphoreCount = 1;
present.pWaitSemaphores = &present_semaphore;
present.swapchainCount = 1;
present.pSwapchains = &swapper->swap_chain;
present.pImageIndices = &swap_idx;
@ -988,30 +989,30 @@ reacquire:
} else if (gst_vulkan_error_to_g_error (err, error, "vkQueuePresentKHR") < 0)
goto error;
err = vkWaitForFences (swapper->device->device, 1, &cmd_data.fence, TRUE, -1);
if (gst_vulkan_error_to_g_error (err, error, "vkWaitForFences") < 0)
err = vkDeviceWaitIdle (swapper->device->device);
if (gst_vulkan_error_to_g_error (err, error, "vkDeviceWaitIdle") < 0)
goto error;
if (semaphore)
vkDestroySemaphore (swapper->device->device, semaphore, NULL);
if (acquire_semaphore)
vkDestroySemaphore (swapper->device->device, acquire_semaphore, NULL);
if (present_semaphore)
vkDestroySemaphore (swapper->device->device, present_semaphore, NULL);
if (cmd_data.cmd)
vkFreeCommandBuffers (swapper->device->device, swapper->device->cmd_pool,
1, &cmd_data.cmd);
if (cmd_data.fence)
vkDestroyFence (swapper->device->device, cmd_data.fence, NULL);
if (cmd_data.notify)
cmd_data.notify (cmd_data.data);
return TRUE;
error:
{
if (semaphore)
vkDestroySemaphore (swapper->device->device, semaphore, NULL);
if (acquire_semaphore)
vkDestroySemaphore (swapper->device->device, acquire_semaphore, NULL);
if (present_semaphore)
vkDestroySemaphore (swapper->device->device, present_semaphore, NULL);
if (cmd_data.cmd)
vkFreeCommandBuffers (swapper->device->device, swapper->device->cmd_pool,
1, &cmd_data.cmd);
if (cmd_data.fence)
vkDestroyFence (swapper->device->device, cmd_data.fence, NULL);
if (cmd_data.notify)
cmd_data.notify (cmd_data.data);
return FALSE;