474 lines
16 KiB
C++
474 lines
16 KiB
C++
// Copyright 2016 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include "VideoBackends/Vulkan/CommandBufferManager.h"
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#include <array>
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#include <cstdint>
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#include "Common/Assert.h"
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#include "Common/MsgHandler.h"
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#include "VideoBackends/Vulkan/VulkanContext.h"
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namespace Vulkan
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{
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CommandBufferManager::CommandBufferManager(bool use_threaded_submission)
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: m_submit_semaphore(1, 1), m_use_threaded_submission(use_threaded_submission)
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{
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}
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CommandBufferManager::~CommandBufferManager()
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{
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// If the worker thread is enabled, stop and block until it exits.
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if (m_use_threaded_submission)
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{
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m_submit_loop->Stop();
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m_submit_thread.join();
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}
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DestroyCommandBuffers();
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}
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bool CommandBufferManager::Initialize()
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{
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if (!CreateCommandBuffers())
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return false;
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if (m_use_threaded_submission && !CreateSubmitThread())
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return false;
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return true;
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}
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bool CommandBufferManager::CreateCommandBuffers()
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{
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static constexpr VkSemaphoreCreateInfo semaphore_create_info = {
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VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO, nullptr, 0};
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VkDevice device = g_vulkan_context->GetDevice();
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VkResult res;
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for (FrameResources& resources : m_frame_resources)
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{
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resources.init_command_buffer_used = false;
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resources.semaphore_used = false;
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VkCommandPoolCreateInfo pool_info = {VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO, nullptr, 0,
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g_vulkan_context->GetGraphicsQueueFamilyIndex()};
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res = vkCreateCommandPool(g_vulkan_context->GetDevice(), &pool_info, nullptr,
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&resources.command_pool);
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if (res != VK_SUCCESS)
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{
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LOG_VULKAN_ERROR(res, "vkCreateCommandPool failed: ");
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return false;
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}
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VkCommandBufferAllocateInfo buffer_info = {
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VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO, nullptr, resources.command_pool,
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VK_COMMAND_BUFFER_LEVEL_PRIMARY, static_cast<uint32_t>(resources.command_buffers.size())};
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res = vkAllocateCommandBuffers(device, &buffer_info, resources.command_buffers.data());
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if (res != VK_SUCCESS)
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{
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LOG_VULKAN_ERROR(res, "vkAllocateCommandBuffers failed: ");
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return false;
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}
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VkFenceCreateInfo fence_info = {VK_STRUCTURE_TYPE_FENCE_CREATE_INFO, nullptr,
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VK_FENCE_CREATE_SIGNALED_BIT};
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res = vkCreateFence(device, &fence_info, nullptr, &resources.fence);
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if (res != VK_SUCCESS)
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{
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LOG_VULKAN_ERROR(res, "vkCreateFence failed: ");
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return false;
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}
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res = vkCreateSemaphore(device, &semaphore_create_info, nullptr, &resources.semaphore);
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if (res != VK_SUCCESS)
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{
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LOG_VULKAN_ERROR(res, "vkCreateSemaphore failed: ");
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return false;
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}
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// TODO: A better way to choose the number of descriptors.
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const std::array<VkDescriptorPoolSize, 5> pool_sizes{{
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{VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 500000},
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{VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 500000},
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{VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 16},
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{VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, 16384},
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{VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 16384},
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}};
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const VkDescriptorPoolCreateInfo pool_create_info = {
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VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO,
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nullptr,
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0,
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100000, // tweak this
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static_cast<u32>(pool_sizes.size()),
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pool_sizes.data(),
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};
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res = vkCreateDescriptorPool(device, &pool_create_info, nullptr, &resources.descriptor_pool);
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if (res != VK_SUCCESS)
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{
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LOG_VULKAN_ERROR(res, "vkCreateDescriptorPool failed: ");
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return false;
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}
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}
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res = vkCreateSemaphore(device, &semaphore_create_info, nullptr, &m_present_semaphore);
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if (res != VK_SUCCESS)
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{
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LOG_VULKAN_ERROR(res, "vkCreateSemaphore failed: ");
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return false;
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}
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// Activate the first command buffer. ActivateCommandBuffer moves forward, so start with the last
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m_current_frame = static_cast<u32>(m_frame_resources.size()) - 1;
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BeginCommandBuffer();
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return true;
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}
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void CommandBufferManager::DestroyCommandBuffers()
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{
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VkDevice device = g_vulkan_context->GetDevice();
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for (FrameResources& resources : m_frame_resources)
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{
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// The Vulkan spec section 5.2 says: "When a pool is destroyed, all command buffers allocated
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// from the pool are freed.". So we don't need to free the command buffers, just the pools.
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// We destroy the command pool first, to avoid any warnings from the validation layers about
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// objects which are pending destruction being in-use.
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if (resources.command_pool != VK_NULL_HANDLE)
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vkDestroyCommandPool(device, resources.command_pool, nullptr);
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// Destroy any pending objects.
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for (auto& it : resources.cleanup_resources)
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it();
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if (resources.semaphore != VK_NULL_HANDLE)
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vkDestroySemaphore(device, resources.semaphore, nullptr);
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if (resources.fence != VK_NULL_HANDLE)
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vkDestroyFence(device, resources.fence, nullptr);
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if (resources.descriptor_pool != VK_NULL_HANDLE)
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vkDestroyDescriptorPool(device, resources.descriptor_pool, nullptr);
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}
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vkDestroySemaphore(device, m_present_semaphore, nullptr);
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}
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VkDescriptorSet CommandBufferManager::AllocateDescriptorSet(VkDescriptorSetLayout set_layout)
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{
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VkDescriptorSetAllocateInfo allocate_info = {
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VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO, nullptr,
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m_frame_resources[m_current_frame].descriptor_pool, 1, &set_layout};
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VkDescriptorSet descriptor_set;
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VkResult res =
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vkAllocateDescriptorSets(g_vulkan_context->GetDevice(), &allocate_info, &descriptor_set);
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if (res != VK_SUCCESS)
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{
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// Failing to allocate a descriptor set is not a fatal error, we can
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// recover by moving to the next command buffer.
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return VK_NULL_HANDLE;
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}
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return descriptor_set;
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}
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bool CommandBufferManager::CreateSubmitThread()
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{
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m_submit_loop = std::make_unique<Common::BlockingLoop>();
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m_submit_thread = std::thread([this]() {
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m_submit_loop->Run([this]() {
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PendingCommandBufferSubmit submit;
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{
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std::lock_guard<std::mutex> guard(m_pending_submit_lock);
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if (m_pending_submits.empty())
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{
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m_submit_loop->AllowSleep();
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return;
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}
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submit = m_pending_submits.front();
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m_pending_submits.pop_front();
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}
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SubmitCommandBuffer(submit.command_buffer_index, submit.present_swap_chain,
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submit.present_image_index);
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});
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});
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return true;
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}
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void CommandBufferManager::WaitForWorkerThreadIdle()
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{
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// Drain the semaphore, then allow another request in the future.
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m_submit_semaphore.Wait();
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m_submit_semaphore.Post();
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}
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void CommandBufferManager::WaitForFenceCounter(u64 fence_counter)
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{
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if (m_completed_fence_counter >= fence_counter)
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return;
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// Find the first command buffer which covers this counter value.
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u32 index = (m_current_frame + 1) % NUM_COMMAND_BUFFERS;
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while (index != m_current_frame)
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{
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if (m_frame_resources[index].fence_counter >= fence_counter)
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break;
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index = (index + 1) % NUM_COMMAND_BUFFERS;
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}
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ASSERT(index != m_current_frame);
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WaitForCommandBufferCompletion(index);
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}
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void CommandBufferManager::WaitForCommandBufferCompletion(u32 index)
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{
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// Ensure this command buffer has been submitted.
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WaitForWorkerThreadIdle();
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// Wait for this command buffer to be completed.
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VkResult res = vkWaitForFences(g_vulkan_context->GetDevice(), 1, &m_frame_resources[index].fence,
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VK_TRUE, UINT64_MAX);
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if (res != VK_SUCCESS)
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LOG_VULKAN_ERROR(res, "vkWaitForFences failed: ");
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// Clean up any resources for command buffers between the last known completed buffer and this
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// now-completed command buffer. If we use >2 buffers, this may be more than one buffer.
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const u64 now_completed_counter = m_frame_resources[index].fence_counter;
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u32 cleanup_index = (m_current_frame + 1) % NUM_COMMAND_BUFFERS;
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while (cleanup_index != m_current_frame)
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{
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FrameResources& resources = m_frame_resources[cleanup_index];
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if (resources.fence_counter > now_completed_counter)
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break;
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if (resources.fence_counter > m_completed_fence_counter)
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{
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for (auto& it : resources.cleanup_resources)
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it();
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resources.cleanup_resources.clear();
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}
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cleanup_index = (cleanup_index + 1) % NUM_COMMAND_BUFFERS;
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}
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m_completed_fence_counter = now_completed_counter;
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}
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void CommandBufferManager::SubmitCommandBuffer(bool submit_on_worker_thread,
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bool wait_for_completion,
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VkSwapchainKHR present_swap_chain,
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uint32_t present_image_index)
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{
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// End the current command buffer.
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FrameResources& resources = m_frame_resources[m_current_frame];
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for (VkCommandBuffer command_buffer : resources.command_buffers)
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{
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VkResult res = vkEndCommandBuffer(command_buffer);
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if (res != VK_SUCCESS)
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{
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LOG_VULKAN_ERROR(res, "vkEndCommandBuffer failed: ");
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PanicAlert("Failed to end command buffer");
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}
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}
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// Grab the semaphore before submitting command buffer either on-thread or off-thread.
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// This prevents a race from occurring where a second command buffer is executed
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// before the worker thread has woken and executed the first one yet.
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m_submit_semaphore.Wait();
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// Submitting off-thread?
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if (m_use_threaded_submission && submit_on_worker_thread && !wait_for_completion)
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{
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// Push to the pending submit queue.
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{
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std::lock_guard<std::mutex> guard(m_pending_submit_lock);
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m_pending_submits.push_back({present_swap_chain, present_image_index, m_current_frame});
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}
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// Wake up the worker thread for a single iteration.
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m_submit_loop->Wakeup();
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}
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else
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{
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// Pass through to normal submission path.
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SubmitCommandBuffer(m_current_frame, present_swap_chain, present_image_index);
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if (wait_for_completion)
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WaitForCommandBufferCompletion(m_current_frame);
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}
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// Switch to next cmdbuffer.
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BeginCommandBuffer();
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}
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void CommandBufferManager::SubmitCommandBuffer(u32 command_buffer_index,
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VkSwapchainKHR present_swap_chain,
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u32 present_image_index)
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{
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FrameResources& resources = m_frame_resources[command_buffer_index];
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// This may be executed on the worker thread, so don't modify any state of the manager class.
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uint32_t wait_bits = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
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VkSubmitInfo submit_info = {VK_STRUCTURE_TYPE_SUBMIT_INFO,
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nullptr,
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0,
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nullptr,
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&wait_bits,
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static_cast<u32>(resources.command_buffers.size()),
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resources.command_buffers.data(),
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0,
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nullptr};
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// If the init command buffer did not have any commands recorded, don't submit it.
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if (!resources.init_command_buffer_used)
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{
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submit_info.commandBufferCount = 1;
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submit_info.pCommandBuffers = &resources.command_buffers[1];
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}
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if (resources.semaphore_used)
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{
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submit_info.pWaitSemaphores = &resources.semaphore;
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submit_info.waitSemaphoreCount = 1;
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}
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if (present_swap_chain != VK_NULL_HANDLE)
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{
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submit_info.signalSemaphoreCount = 1;
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submit_info.pSignalSemaphores = &m_present_semaphore;
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}
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VkResult res =
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vkQueueSubmit(g_vulkan_context->GetGraphicsQueue(), 1, &submit_info, resources.fence);
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if (res != VK_SUCCESS)
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{
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LOG_VULKAN_ERROR(res, "vkQueueSubmit failed: ");
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PanicAlert("Failed to submit command buffer.");
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}
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// Do we have a swap chain to present?
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if (present_swap_chain != VK_NULL_HANDLE)
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{
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// Should have a signal semaphore.
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VkPresentInfoKHR present_info = {VK_STRUCTURE_TYPE_PRESENT_INFO_KHR,
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nullptr,
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1,
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&m_present_semaphore,
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1,
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&present_swap_chain,
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&present_image_index,
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nullptr};
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res = vkQueuePresentKHR(g_vulkan_context->GetPresentQueue(), &present_info);
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if (res != VK_SUCCESS)
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{
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// VK_ERROR_OUT_OF_DATE_KHR is not fatal, just means we need to recreate our swap chain.
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if (res != VK_ERROR_OUT_OF_DATE_KHR && res != VK_SUBOPTIMAL_KHR)
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LOG_VULKAN_ERROR(res, "vkQueuePresentKHR failed: ");
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m_present_failed_flag.Set();
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}
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}
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// Command buffer has been queued, so permit the next one.
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m_submit_semaphore.Post();
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}
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void CommandBufferManager::BeginCommandBuffer()
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{
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// Move to the next command buffer.
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const u32 next_buffer_index = (m_current_frame + 1) % NUM_COMMAND_BUFFERS;
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FrameResources& resources = m_frame_resources[next_buffer_index];
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// Wait for the GPU to finish with all resources for this command buffer.
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if (resources.fence_counter > m_completed_fence_counter)
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WaitForCommandBufferCompletion(next_buffer_index);
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// Reset fence to unsignaled before starting.
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VkResult res = vkResetFences(g_vulkan_context->GetDevice(), 1, &resources.fence);
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if (res != VK_SUCCESS)
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LOG_VULKAN_ERROR(res, "vkResetFences failed: ");
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// Reset command pools to beginning since we can re-use the memory now
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res = vkResetCommandPool(g_vulkan_context->GetDevice(), resources.command_pool, 0);
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if (res != VK_SUCCESS)
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LOG_VULKAN_ERROR(res, "vkResetCommandPool failed: ");
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// Enable commands to be recorded to the two buffers again.
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VkCommandBufferBeginInfo begin_info = {VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO, nullptr,
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VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT, nullptr};
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for (VkCommandBuffer command_buffer : resources.command_buffers)
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{
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res = vkBeginCommandBuffer(command_buffer, &begin_info);
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if (res != VK_SUCCESS)
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LOG_VULKAN_ERROR(res, "vkBeginCommandBuffer failed: ");
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}
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// Also can do the same for the descriptor pools
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res = vkResetDescriptorPool(g_vulkan_context->GetDevice(), resources.descriptor_pool, 0);
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if (res != VK_SUCCESS)
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LOG_VULKAN_ERROR(res, "vkResetDescriptorPool failed: ");
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// Reset upload command buffer state
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resources.init_command_buffer_used = false;
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resources.semaphore_used = false;
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resources.fence_counter = m_next_fence_counter++;
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m_current_frame = next_buffer_index;
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}
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void CommandBufferManager::DeferBufferDestruction(VkBuffer object)
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{
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FrameResources& resources = m_frame_resources[m_current_frame];
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resources.cleanup_resources.push_back(
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[object]() { vkDestroyBuffer(g_vulkan_context->GetDevice(), object, nullptr); });
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}
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void CommandBufferManager::DeferBufferViewDestruction(VkBufferView object)
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{
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FrameResources& resources = m_frame_resources[m_current_frame];
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resources.cleanup_resources.push_back(
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[object]() { vkDestroyBufferView(g_vulkan_context->GetDevice(), object, nullptr); });
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}
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void CommandBufferManager::DeferDeviceMemoryDestruction(VkDeviceMemory object)
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{
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FrameResources& resources = m_frame_resources[m_current_frame];
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resources.cleanup_resources.push_back(
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[object]() { vkFreeMemory(g_vulkan_context->GetDevice(), object, nullptr); });
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}
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void CommandBufferManager::DeferFramebufferDestruction(VkFramebuffer object)
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{
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FrameResources& resources = m_frame_resources[m_current_frame];
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resources.cleanup_resources.push_back(
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[object]() { vkDestroyFramebuffer(g_vulkan_context->GetDevice(), object, nullptr); });
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}
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void CommandBufferManager::DeferImageDestruction(VkImage object)
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{
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FrameResources& resources = m_frame_resources[m_current_frame];
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resources.cleanup_resources.push_back(
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[object]() { vkDestroyImage(g_vulkan_context->GetDevice(), object, nullptr); });
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}
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void CommandBufferManager::DeferImageViewDestruction(VkImageView object)
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{
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FrameResources& resources = m_frame_resources[m_current_frame];
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resources.cleanup_resources.push_back(
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[object]() { vkDestroyImageView(g_vulkan_context->GetDevice(), object, nullptr); });
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}
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std::unique_ptr<CommandBufferManager> g_command_buffer_mgr;
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} // namespace Vulkan
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