src/ngfx/porting/vulkan/VKDevice.cpp

Source code

/*
 * Copyright 2020 GoPro Inc.
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
#include "ngfx/porting/vulkan/VKDevice.h"
#include "ngfx/porting/vulkan/VKDebugUtil.h"
using namespace ngfx;

uint32_t VKDevice::getQueueFamilyIndex(VkQueueFlags queueFlags) {
  auto queueFamilyProperties = vkPhysicalDevice->queueFamilyProperties;
  if (queueFlags & VK_QUEUE_COMPUTE_BIT) {
    // Try to find dedicated queue for compute
    for (uint32_t i = 0; i < queueFamilyProperties.size(); i++) {
      auto &props = queueFamilyProperties[i];
      if ((props.queueFlags & queueFlags) &&
          (!(props.queueFlags & VK_QUEUE_GRAPHICS_BIT))) {
        return i;
        break;
      }
    }
  }

  if (queueFlags & VK_QUEUE_TRANSFER_BIT) {
    // Try to find dedicated queue for transfer
    for (uint32_t i = 0; i < queueFamilyProperties.size(); i++) {
      auto &props = queueFamilyProperties[i];
      if ((props.queueFlags & queueFlags) &&
          (!(props.queueFlags & VK_QUEUE_GRAPHICS_BIT)) &&
          (!(props.queueFlags & VK_QUEUE_COMPUTE_BIT))) {
        return i;
        break;
      }
    }
  }

  // Return the first queue to support the requested flags
  for (uint32_t i = 0; i < queueFamilyProperties.size(); i++) {
    if (queueFamilyProperties[i].queueFlags & queueFlags) {
      return i;
      break;
    }
  }
  NGFX_ERR("Could not find a matching queue family index");
  return 0;
}

void VKDevice::getQueueCreateInfos(VkQueueFlags requestedQueueTypes) {
  // Get queue family indices for the requested queue family types
  // Note that the indices may overlap depending on the implementation
  static const float defaultQueuePriority = 0.0f;
  // Graphics queue
  if (requestedQueueTypes & VK_QUEUE_GRAPHICS_BIT) {
    queueFamilyIndices.graphics = getQueueFamilyIndex(VK_QUEUE_GRAPHICS_BIT);
    VkDeviceQueueCreateInfo queueInfo{};
    queueInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
    queueInfo.queueFamilyIndex = queueFamilyIndices.graphics;
    queueInfo.queueCount = 1;
    queueInfo.pQueuePriorities = &defaultQueuePriority;
    queueCreateInfos.push_back(queueInfo);
  } else {
    queueFamilyIndices.graphics = VK_NULL_HANDLE;
  }

  // Compute queue
  if (requestedQueueTypes & VK_QUEUE_COMPUTE_BIT) {
    queueFamilyIndices.compute = getQueueFamilyIndex(VK_QUEUE_COMPUTE_BIT);
    if (queueFamilyIndices.compute != queueFamilyIndices.graphics) {
      // Found dedicated compute queue
      VkDeviceQueueCreateInfo queueInfo{};
      queueInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
      queueInfo.queueFamilyIndex = queueFamilyIndices.compute;
      queueInfo.queueCount = 1;
      queueInfo.pQueuePriorities = &defaultQueuePriority;
      queueCreateInfos.push_back(queueInfo);
    }
  } else {
    // Use the same queue
    queueFamilyIndices.compute = queueFamilyIndices.graphics;
  }

  // Transfer queue
  if (requestedQueueTypes & VK_QUEUE_TRANSFER_BIT) {
    queueFamilyIndices.transfer = getQueueFamilyIndex(VK_QUEUE_TRANSFER_BIT);
    if ((queueFamilyIndices.transfer != queueFamilyIndices.graphics) &&
        (queueFamilyIndices.transfer != queueFamilyIndices.compute)) {
      // Found dedicated transfer queue
      VkDeviceQueueCreateInfo queueInfo{};
      queueInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
      queueInfo.queueFamilyIndex = queueFamilyIndices.transfer;
      queueInfo.queueCount = 1;
      queueInfo.pQueuePriorities = &defaultQueuePriority;
      queueCreateInfos.push_back(queueInfo);
    }
  } else {
    // Use the same queue
    queueFamilyIndices.transfer = queueFamilyIndices.graphics;
  }
}

void VKDevice::getDeviceExtensions() {
  deviceExtensions.push_back(VK_KHR_SWAPCHAIN_EXTENSION_NAME);
  deviceExtensions.push_back(VK_KHR_MAINTENANCE1_EXTENSION_NAME);
  // Enable the debug marker extension if it is present
  if (vkPhysicalDevice->extensionSupported(
          VK_EXT_DEBUG_MARKER_EXTENSION_NAME) &&
      vkPhysicalDevice->extensionSupported(
          VK_EXT_DEBUG_REPORT_EXTENSION_NAME)) {
    deviceExtensions.push_back(VK_EXT_DEBUG_MARKER_EXTENSION_NAME);
    deviceExtensions.push_back(VK_EXT_DEBUG_REPORT_EXTENSION_NAME);
    enableDebugMarkers = true;
  }
}
void VKDevice::create(VKPhysicalDevice *vkPhysicalDevice) {
  VkResult vkResult;
  this->vkPhysicalDevice = vkPhysicalDevice;
  getQueueCreateInfos();
  getDeviceExtensions();

  createInfo = {};
  createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
  createInfo.queueCreateInfoCount =
      static_cast<uint32_t>(queueCreateInfos.size());
  ;
  createInfo.pQueueCreateInfos = queueCreateInfos.data();
  createInfo.pEnabledFeatures = nullptr;
  createInfo.enabledExtensionCount = (uint32_t)deviceExtensions.size();
  enabledDeviceExtensions.resize(deviceExtensions.size());
  for (uint32_t j = 0; j < deviceExtensions.size(); j++)
    enabledDeviceExtensions[j] = deviceExtensions[j].c_str();
  createInfo.ppEnabledExtensionNames = enabledDeviceExtensions.data();
  V(vkCreateDevice(vkPhysicalDevice->v, &createInfo, nullptr, &v));
}
void VKDevice::waitIdle() {
  VkResult vkResult;
  V(vkDeviceWaitIdle(v));
}
VKDevice::~VKDevice() {
  if (v)
    VK_TRACE(vkDestroyDevice(v, nullptr));
}

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Updated on 3 April 2021 at 20:21:51 PDT