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Vulkan: Simplify command buffer fence tracking

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This commit is contained in:
Stenzek
2019-03-17 15:59:22 +10:00
parent f3fadd7302
commit 427dd45151
11 changed files with 138 additions and 208 deletions
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122
Source/Core/VideoBackends/Vulkan/CommandBufferManager.cpp
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@ -54,7 +54,6 @@ bool CommandBufferManager::CreateCommandBuffers()
{
resources.init_command_buffer_used = false;
resources.semaphore_used = false;
resources.needs_fence_wait = false;
VkCommandPoolCreateInfo pool_info = {VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO, nullptr, 0,
g_vulkan_context->GetGraphicsQueueFamilyIndex()};
@ -211,43 +210,61 @@ void CommandBufferManager::WaitForWorkerThreadIdle()
m_submit_semaphore.Post();
}
void CommandBufferManager::WaitForGPUIdle()
void CommandBufferManager::WaitForFenceCounter(u64 fence_counter)
{
WaitForWorkerThreadIdle();
vkDeviceWaitIdle(g_vulkan_context->GetDevice());
}
void CommandBufferManager::WaitForFence(VkFence fence)
{
// Find the command buffer that this fence corresponds to.
u32 command_buffer_index = 0;
for (; command_buffer_index < static_cast<u32>(m_frame_resources.size()); command_buffer_index++)
{
if (m_frame_resources[command_buffer_index].fence == fence)
break;
}
ASSERT(command_buffer_index < m_frame_resources.size());
// Has this command buffer already been waited for?
if (!m_frame_resources[command_buffer_index].needs_fence_wait)
if (m_completed_fence_counter >= fence_counter)
return;
// Find the first command buffer which covers this counter value.
u32 index = (m_current_frame + 1) % NUM_COMMAND_BUFFERS;
while (index != m_current_frame)
{
if (m_frame_resources[index].fence_counter >= fence_counter)
break;
index = (index + 1) % NUM_COMMAND_BUFFERS;
}
ASSERT(index != m_current_frame);
WaitForCommandBufferCompletion(index);
}
void CommandBufferManager::WaitForCommandBufferCompletion(u32 index)
{
// Ensure this command buffer has been submitted.
WaitForWorkerThreadIdle();
// Wait for this command buffer to be completed.
VkResult res =
vkWaitForFences(g_vulkan_context->GetDevice(), 1,
&m_frame_resources[command_buffer_index].fence, VK_TRUE, UINT64_MAX);
VkResult res = vkWaitForFences(g_vulkan_context->GetDevice(), 1, &m_frame_resources[index].fence,
VK_TRUE, UINT64_MAX);
if (res != VK_SUCCESS)
LOG_VULKAN_ERROR(res, "vkWaitForFences failed: ");
// Immediately fire callbacks and cleanups, since the commands has been completed.
m_frame_resources[command_buffer_index].needs_fence_wait = false;
OnCommandBufferExecuted(command_buffer_index);
// Clean up any resources for command buffers between the last known completed buffer and this
// now-completed command buffer. If we use >2 buffers, this may be more than one buffer.
const u64 now_completed_counter = m_frame_resources[index].fence_counter;
u32 cleanup_index = (m_current_frame + 1) % NUM_COMMAND_BUFFERS;
while (cleanup_index != m_current_frame)
{
FrameResources& resources = m_frame_resources[cleanup_index];
if (resources.fence_counter > now_completed_counter)
break;
if (resources.fence_counter > m_completed_fence_counter)
{
for (auto& it : resources.cleanup_resources)
it();
resources.cleanup_resources.clear();
}
cleanup_index = (cleanup_index + 1) % NUM_COMMAND_BUFFERS;
}
m_completed_fence_counter = now_completed_counter;
}
void CommandBufferManager::SubmitCommandBuffer(bool submit_on_worker_thread,
bool wait_for_completion,
VkSwapchainKHR present_swap_chain,
uint32_t present_image_index)
{
@ -263,16 +280,13 @@ void CommandBufferManager::SubmitCommandBuffer(bool submit_on_worker_thread,
}
}
// This command buffer now has commands, so can't be re-used without waiting.
resources.needs_fence_wait = true;
// Grab the semaphore before submitting command buffer either on-thread or off-thread.
// This prevents a race from occurring where a second command buffer is executed
// before the worker thread has woken and executed the first one yet.
m_submit_semaphore.Wait();
// Submitting off-thread?
if (m_use_threaded_submission && submit_on_worker_thread)
if (m_use_threaded_submission && submit_on_worker_thread && !wait_for_completion)
{
// Push to the pending submit queue.
{
@ -287,6 +301,8 @@ void CommandBufferManager::SubmitCommandBuffer(bool submit_on_worker_thread,
{
// Pass through to normal submission path.
SubmitCommandBuffer(m_current_frame, present_swap_chain, present_image_index);
if (wait_for_completion)
WaitForCommandBufferCompletion(m_current_frame);
}
// Switch to next cmdbuffer.
@ -365,39 +381,15 @@ void CommandBufferManager::SubmitCommandBuffer(u32 command_buffer_index,
m_submit_semaphore.Post();
}
void CommandBufferManager::OnCommandBufferExecuted(u32 index)
{
FrameResources& resources = m_frame_resources[index];
// Fire fence tracking callbacks.
for (auto iter = m_fence_callbacks.begin(); iter != m_fence_callbacks.end();)
{
auto backup_iter = iter++;
backup_iter->second(resources.fence);
}
// Clean up all objects pending destruction on this command buffer
for (auto& it : resources.cleanup_resources)
it();
resources.cleanup_resources.clear();
}
void CommandBufferManager::BeginCommandBuffer()
{
// Move to the next command buffer.
m_current_frame = (m_current_frame + 1) % NUM_COMMAND_BUFFERS;
FrameResources& resources = m_frame_resources[m_current_frame];
const u32 next_buffer_index = (m_current_frame + 1) % NUM_COMMAND_BUFFERS;
FrameResources& resources = m_frame_resources[next_buffer_index];
// Wait for the GPU to finish with all resources for this command buffer.
if (resources.needs_fence_wait)
{
VkResult res =
vkWaitForFences(g_vulkan_context->GetDevice(), 1, &resources.fence, true, UINT64_MAX);
if (res != VK_SUCCESS)
LOG_VULKAN_ERROR(res, "vkWaitForFences failed: ");
OnCommandBufferExecuted(m_current_frame);
}
if (resources.fence_counter > m_completed_fence_counter)
WaitForCommandBufferCompletion(next_buffer_index);
// Reset fence to unsignaled before starting.
VkResult res = vkResetFences(g_vulkan_context->GetDevice(), 1, &resources.fence);
@ -427,6 +419,8 @@ void CommandBufferManager::BeginCommandBuffer()
// Reset upload command buffer state
resources.init_command_buffer_used = false;
resources.semaphore_used = false;
resources.fence_counter = m_next_fence_counter++;
m_current_frame = next_buffer_index;
}
void CommandBufferManager::DeferBufferDestruction(VkBuffer object)
@ -471,19 +465,5 @@ void CommandBufferManager::DeferImageViewDestruction(VkImageView object)
[object]() { vkDestroyImageView(g_vulkan_context->GetDevice(), object, nullptr); });
}
void CommandBufferManager::AddFenceSignaledCallback(const void* key, FenceSignaledCallback callback)
{
// Shouldn't be adding twice.
ASSERT(m_fence_callbacks.find(key) == m_fence_callbacks.end());
m_fence_callbacks.emplace(key, std::move(callback));
}
void CommandBufferManager::RemoveFenceSignaledCallback(const void* key)
{
auto iter = m_fence_callbacks.find(key);
ASSERT(iter != m_fence_callbacks.end());
m_fence_callbacks.erase(iter);
}
std::unique_ptr<CommandBufferManager> g_command_buffer_mgr;
} // namespace Vulkan