src/ngfx/porting/vulkan/VKDescriptorSetLayoutCache.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/VKDescriptorSetLayoutCache.h"
#include "ngfx/porting/vulkan/VKDebugUtil.h"
using namespace ngfx;

void VKDescriptorSetLayoutCache::create(VkDevice device) {
  this->device = device;
  initDescriptorSetLayout(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER);
  initDescriptorSetLayout(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER);
  initDescriptorSetLayout(VK_DESCRIPTOR_TYPE_STORAGE_IMAGE);
  initDescriptorSetLayout(VK_DESCRIPTOR_TYPE_STORAGE_BUFFER);
}

VKDescriptorSetLayoutCache::~VKDescriptorSetLayoutCache() {
  for (const auto &it : cache) {
    VK_TRACE(vkDestroyDescriptorSetLayout(device, it.second.layout, nullptr));
  }
}

VkDescriptorSetLayout
VKDescriptorSetLayoutCache::get(VkDescriptorType type,
                                VkShaderStageFlags stageFlags) {
  return cache.at(type).layout;
}

void VKDescriptorSetLayoutCache::initDescriptorSetLayout(
    VkDescriptorType descriptorType) {
  VkResult vkResult;
  VKDescriptorSetLayoutData data;
  data.layoutBinding = {0, descriptorType, 1, VK_SHADER_STAGE_ALL, nullptr};
  data.createInfo = {VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO,
                     nullptr, 0, 1, &data.layoutBinding};
  V(vkCreateDescriptorSetLayout(device, &data.createInfo, nullptr,
                                &data.layout));
  cache[descriptorType] = std::move(data);
}

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