99 lines
3.8 KiB
C++
99 lines
3.8 KiB
C++
// Copyright(c) 2018-2019, NVIDIA CORPORATION. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// VulkanHpp Samples : 09_InitDescriptorSet
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// Initialize a descriptor set
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#if defined( _MSC_VER )
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# pragma warning( disable : 4201 ) // disable warning C4201: nonstandard extension used: nameless struct/union; needed
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// to get glm/detail/type_vec?.hpp without warnings
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#elif defined( __GNUC__ )
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// don't know how to switch off that warning here
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#else
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// unknow compiler... just ignore the warnings for yourselves ;)
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#endif
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#include "../../samples/utils/math.hpp"
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#include "../utils/utils.hpp"
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#include <iostream>
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#define GLM_FORCE_RADIANS
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#include <glm/gtc/matrix_transform.hpp>
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static char const * AppName = "09_InitDescriptorSet";
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static char const * EngineName = "Vulkan.hpp";
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int main( int /*argc*/, char ** /*argv*/ )
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{
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try
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{
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vk::raii::Context context;
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vk::raii::Instance instance =
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vk::raii::su::makeInstance( context, AppName, EngineName, {}, vk::su::getInstanceExtensions() );
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#if !defined( NDEBUG )
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vk::raii::DebugUtilsMessengerEXT debugUtilsMessenger( instance, vk::su::makeDebugUtilsMessengerCreateInfoEXT() );
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#endif
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vk::raii::PhysicalDevice physicalDevice = std::move( vk::raii::PhysicalDevices( instance ).front() );
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uint32_t graphicsQueueFamilyIndex =
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vk::su::findGraphicsQueueFamilyIndex( physicalDevice.getQueueFamilyProperties() );
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vk::raii::Device device = vk::raii::su::makeDevice( physicalDevice, graphicsQueueFamilyIndex );
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vk::raii::su::BufferData uniformBufferData(
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physicalDevice, device, sizeof( glm::mat4x4 ), vk::BufferUsageFlagBits::eUniformBuffer );
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glm::mat4x4 mvpcMatrix = vk::su::createModelViewProjectionClipMatrix( vk::Extent2D( 0, 0 ) );
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vk::raii::su::copyToDevice( uniformBufferData.deviceMemory, mvpcMatrix );
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vk::raii::DescriptorSetLayout descriptorSetLayout = vk::raii::su::makeDescriptorSetLayout(
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device, { { vk::DescriptorType::eUniformBuffer, 1, vk::ShaderStageFlagBits::eVertex } } );
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/* VULKAN_HPP_KEY_START */
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// create a descriptor pool
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vk::DescriptorPoolSize poolSize( vk::DescriptorType::eUniformBuffer, 1 );
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vk::DescriptorPoolCreateInfo descriptorPoolCreateInfo(
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vk::DescriptorPoolCreateFlagBits::eFreeDescriptorSet, 1, poolSize );
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vk::raii::DescriptorPool descriptorPool( device, descriptorPoolCreateInfo );
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// allocate a descriptor set
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vk::DescriptorSetAllocateInfo descriptorSetAllocateInfo( *descriptorPool, *descriptorSetLayout );
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vk::raii::DescriptorSet descriptorSet =
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std::move( vk::raii::DescriptorSets( device, descriptorSetAllocateInfo ).front() );
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vk::DescriptorBufferInfo descriptorBufferInfo( *uniformBufferData.buffer, 0, sizeof( glm::mat4x4 ) );
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vk::WriteDescriptorSet writeDescriptorSet(
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*descriptorSet, 0, 0, vk::DescriptorType::eUniformBuffer, {}, descriptorBufferInfo );
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device.updateDescriptorSets( writeDescriptorSet, nullptr );
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/* VULKAN_HPP_KEY_END */
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}
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catch ( vk::SystemError & err )
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{
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std::cout << "vk::SystemError: " << err.what() << std::endl;
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exit( -1 );
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}
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catch ( std::exception & err )
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{
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std::cout << "std::exception: " << err.what() << std::endl;
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exit( -1 );
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}
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catch ( ... )
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{
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std::cout << "unknown error\n";
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exit( -1 );
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}
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return 0;
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}
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