First samples on using vulkan.hpp: 01_InitInstance, 02_EnumerateDevices, 03_InitDevice, 04_InitCommandBuffer, 05_InitSwapchain, 06_InitDepthBuffer. (#197)

samples/04_InitCommandBuffer/04_InitCommandBuffer.cpp

@@ -0,0 +1,66 @@
+// Copyright(c) 2018, NVIDIA CORPORATION. All rights reserved.
+//
+// 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
+//
+//     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.
+//
+// VulkanHpp Samples : 04_InitCommandBuffer
+//                     Create command buffer
+
+#include "vulkan/vulkan.hpp"
+#include <iostream>
+
+static char const* AppName = "04_InitCommandBuffer";
+static char const* EngineName = "Vulkan.hpp";
+
+int main(int argc, char *argv[])
+{
+  try
+  {
+    vk::ApplicationInfo appInfo(AppName, 1, EngineName, 1, VK_API_VERSION_1_1);
+    vk::UniqueInstance instance = vk::createInstanceUnique(vk::InstanceCreateInfo({}, &appInfo));
+    std::vector<vk::PhysicalDevice> physicalDevices = instance->enumeratePhysicalDevices();
+    assert(!physicalDevices.empty());
+    std::vector<vk::QueueFamilyProperties> queueFamilyProperties = physicalDevices[0].getQueueFamilyProperties();
+    size_t graphicsQueueFamilyIndex = std::distance(queueFamilyProperties.begin(),
+                                                    std::find_if(queueFamilyProperties.begin(),
+                                                                 queueFamilyProperties.end(),
+                                                                 [](vk::QueueFamilyProperties const& qfp) { return qfp.queueFlags & vk::QueueFlagBits::eGraphics; }));
+    assert(graphicsQueueFamilyIndex < queueFamilyProperties.size());
+    float queuePriority = 0.0f;
+    vk::DeviceQueueCreateInfo deviceQueueCreateInfo({}, static_cast<uint32_t>(graphicsQueueFamilyIndex), 1, &queuePriority);
+    vk::UniqueDevice device = physicalDevices[0].createDeviceUnique(vk::DeviceCreateInfo({}, 1, &deviceQueueCreateInfo));
+
+    /* VULKAN_HPP_KEY_START */
+
+    // create a UniqueCommandPool to allocate a CommandBuffer from
+    vk::UniqueCommandPool commandPool = device->createCommandPoolUnique(vk::CommandPoolCreateInfo(vk::CommandPoolCreateFlags(), deviceQueueCreateInfo.queueFamilyIndex));
+
+    // allocate a CommandBuffer from the CommandPool
+    std::vector<vk::UniqueCommandBuffer> commandBuffers = device->allocateCommandBuffersUnique(vk::CommandBufferAllocateInfo(commandPool.get(), vk::CommandBufferLevel::ePrimary, 1));
+
+    // Note: No need to explicitly free the CommandBuffer or destroy the CommandPool, as the corresponding free and destroy
+    // functions are called by the destructor of the UniqueCommandBuffer and the UniqueCommandPool on leaving this scope.
+
+    /* VULKAN_HPP_KEY_END */
+  }
+  catch (vk::SystemError err)
+  {
+    std::cout << "vk::SystemError: " << err.what() << std::endl;
+    exit(-1);
+  }
+  catch (...)
+  {
+    std::cout << "unknown error\n";
+    exit(-1);
+  }
+  return 0;
+}