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* MVKQueue.h
* Copyright (c) 2014-2019 The Brenwill Workshop Ltd. (
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* See the License for the specific language governing permissions and
* limitations under the License.
#pragma once
#include "MVKDevice.h"
#include "MVKCommandBuffer.h"
#include "MVKImage.h"
#include "MVKSync.h"
#include "MVKVector.h"
#include <vector>
#include <mutex>
#import <Metal/Metal.h>
class MVKQueue;
class MVKQueueSubmission;
class MVKPhysicalDevice;
class MVKGPUCaptureScope;
#pragma mark -
#pragma mark MVKQueueFamily
/** Represents a Vulkan queue family. */
class MVKQueueFamily : public MVKBaseObject {
/** Returns the Vulkan API opaque object controlling this object. */
MVKVulkanAPIObject* getVulkanAPIObject() override { return _physicalDevice->getVulkanAPIObject(); }
/** Returns the index of this queue family. */
inline uint32_t getIndex() { return _queueFamilyIndex; }
/** Populates the specified properties structure. */
inline void getProperties(VkQueueFamilyProperties* queueProperties) {
if (queueProperties) { *queueProperties = _properties; }
/** Returns the MTLCommandQueue at the specified index. */
id<MTLCommandQueue> getMTLCommandQueue(uint32_t queueIndex);
/** Constructs an instance with the specified index. */
MVKQueueFamily(MVKPhysicalDevice* physicalDevice, uint32_t queueFamilyIndex, const VkQueueFamilyProperties* pProperties);
~MVKQueueFamily() override;
MVKPhysicalDevice* _physicalDevice;
uint32_t _queueFamilyIndex;
VkQueueFamilyProperties _properties;
std::vector<id<MTLCommandQueue>> _mtlQueues;
std::mutex _qLock;
#pragma mark -
#pragma mark MVKQueue
/** Represents a Vulkan queue. */
class MVKQueue : public MVKDispatchableVulkanAPIObject, public MVKDeviceTrackingMixin {
/** Returns the Vulkan type of this object. */
VkObjectType getVkObjectType() override { return VK_OBJECT_TYPE_QUEUE; }
/** Returns the debug report object type of this object. */
VkDebugReportObjectTypeEXT getVkDebugReportObjectType() override { return VK_DEBUG_REPORT_OBJECT_TYPE_QUEUE_EXT; }
/** Returns a pointer to the Vulkan instance. */
MVKInstance* getInstance() override { return _device->getInstance(); }
#pragma mark Queue submissions
/** Submits the specified command buffers to the queue. */
VkResult submit(uint32_t submitCount, const VkSubmitInfo* pSubmits, VkFence fence);
/** Submits the specified presentation command to the queue. */
VkResult submit(const VkPresentInfoKHR* pPresentInfo);
/** Block the current thread until this queue is idle. */
VkResult waitIdle();
/** Return the name of this queue. */
inline const std::string& getName() { return _name; }
#pragma mark Metal
/** Returns the Metal queue underlying this queue. */
inline id<MTLCommandQueue> getMTLCommandQueue() { return _mtlQueue; }
#pragma mark Construction
/** Constructs an instance for the device and queue family. */
MVKQueue(MVKDevice* device, MVKQueueFamily* queueFamily, uint32_t index, float priority);
~MVKQueue() override;
* Returns a reference to this object suitable for use as a Vulkan API handle.
* This is the compliment of the getMVKQueue() method.
inline VkQueue getVkQueue() { return (VkQueue)getVkHandle(); }
* Retrieves the MVKQueue instance referenced by the VkQueue handle.
* This is the compliment of the getVkQueue() method.
static inline MVKQueue* getMVKQueue(VkQueue vkQueue) {
return (MVKQueue*)getDispatchableObject(vkQueue);
friend class MVKQueueSubmission;
friend class MVKQueueCommandBufferSubmission;
friend class MVKQueuePresentSurfaceSubmission;
MVKBaseObject* getBaseObject() override { return this; };
void propogateDebugName() override;
void initName();
void initExecQueue();
void initMTLCommandQueue();
void initGPUCaptureScopes();
void destroyExecQueue();
VkResult submit(MVKQueueSubmission* qSubmit);
MVKQueueFamily* _queueFamily;
uint32_t _index;
float _priority;
dispatch_queue_t _execQueue;
id<MTLCommandQueue> _mtlQueue;
std::string _name;
MVKMTLCommandBufferID _nextMTLCmdBuffID;
MVKGPUCaptureScope* _submissionCaptureScope;
MVKGPUCaptureScope* _presentationCaptureScope;
#pragma mark -
#pragma mark MVKQueueSubmission
/** This is an abstract class for an operation that can be submitted to an MVKQueue. */
class MVKQueueSubmission : public MVKConfigurableObject {
/** Returns the Vulkan API opaque object controlling this object. */
MVKVulkanAPIObject* getVulkanAPIObject() override { return _queue->getVulkanAPIObject(); }
* Executes this action on the queue and then disposes of this instance.
* Upon completion of this function, no further calls should be made to this instance.
virtual void execute() = 0;
MVKQueueSubmission(MVKQueue* queue,
uint32_t waitSemaphoreCount,
const VkSemaphore* pWaitSemaphores);
friend class MVKQueue;
MVKQueue* _queue;
MVKQueueSubmission* _prev;
MVKQueueSubmission* _next;
MVKVectorInline<MVKSemaphore*, 8> _waitSemaphores;
bool _isAwaitingSemaphores;
bool _trackPerformance;
#pragma mark -
#pragma mark MVKQueueCommandBufferSubmission
/** Submits the commands in a set of command buffers to the queue. */
class MVKQueueCommandBufferSubmission : public MVKQueueSubmission {
void execute() override;
/** Constructs an instance for the queue. */
MVKQueueCommandBufferSubmission(MVKQueue* queue,
const VkSubmitInfo* pSubmit,
VkFence fence);
friend MVKCommandBuffer;
id<MTLCommandBuffer> getActiveMTLCommandBuffer();
void setActiveMTLCommandBuffer(id<MTLCommandBuffer> mtlCmdBuff);
void commitActiveMTLCommandBuffer(bool signalCompletion = false);
void finish();
MVKVectorInline<MVKCommandBuffer*, 16> _cmdBuffers;
MVKVectorInline<MVKSemaphore*, 16> _signalSemaphores;
MVKFence* _fence;
id<MTLCommandBuffer> _activeMTLCommandBuffer;
bool _isSignalingSemaphores;
#pragma mark -
#pragma mark MVKQueuePresentSurfaceSubmission
/** Presents a swapchain surface image to the OS. */
class MVKQueuePresentSurfaceSubmission : public MVKQueueSubmission {
void execute() override;
MVKQueuePresentSurfaceSubmission(MVKQueue* queue,
const VkPresentInfoKHR* pPresentInfo);
id<MTLCommandBuffer> getMTLCommandBuffer();
MVKVectorInline<MVKSwapchainImage*, 4> _surfaceImages;