mirror of
https://github.com/KhronosGroup/Vulkan-Hpp.git
synced 2024-10-14 16:32:17 +00:00
283 lines
12 KiB
C++
283 lines
12 KiB
C++
// Copyright(c) 2018, 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 : 05_InitSwapchain
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// Initialize a swapchain
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#include "vulkan/vulkan.hpp"
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#include <iostream>
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static char const* AppName = "05_InitSwapchain";
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static char const* EngineName = "Vulkan.hpp";
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template<class T, class Compare>
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constexpr const T& clamp(const T& v, const T& lo, const T& hi, Compare comp)
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{
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return assert(!comp(hi, lo)),
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comp(v, lo) ? lo : comp(hi, v) ? hi : v;
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}
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template<class T>
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constexpr const T& clamp(const T& v, const T& lo, const T& hi)
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{
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return clamp(v, lo, hi, std::less<>());
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}
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static std::vector<char const*> getDeviceExtensions()
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{
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std::vector<char const*> extensions;
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extensions.push_back(VK_KHR_SWAPCHAIN_EXTENSION_NAME);
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return extensions;
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}
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static std::vector<char const*> getInstanceExtensions()
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{
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std::vector<char const*> extensions;
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extensions.push_back(VK_KHR_SURFACE_EXTENSION_NAME);
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#if defined(VK_USE_PLATFORM_ANDROID_KHR)
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extensions.push_back(VK_KHR_ANDROID_SURFACE_EXTENSION_NAME);
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#elif defined(VK_USE_PLATFORM_IOS_MVK)
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extensions.push_back(VK_MVK_IOS_SURFACE_EXTENSION_NAME);
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#elif defined(VK_USE_PLATFORM_MACOS_MVK)
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extensions.push_back(VK_MVK_MACOS_SURFACE_EXTENSION_NAME);
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#elif defined(VK_USE_PLATFORM_MIR_KHR)
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extensions.push_back(VK_KHR_MIR_SURFACE_EXTENSION_NAME);
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#elif defined(VK_USE_PLATFORM_VI_NN)
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extensions.push_back(VK_NN_VI_SURFACE_EXTENSION_NAME);
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#elif defined(VK_USE_PLATFORM_WAYLAND_KHR)
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extensions.push_back(VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME);
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#elif defined(VK_USE_PLATFORM_WIN32_KHR)
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extensions.push_back(VK_KHR_WIN32_SURFACE_EXTENSION_NAME);
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#elif defined(VK_USE_PLATFORM_XCB_KHR)
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extensions.push_back(VK_KHR_XCB_SURFACE_EXTENSION_NAME);
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#elif defined(VK_USE_PLATFORM_XLIB_KHR)
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extensions.push_back(VK_KHR_XLIB_SURFACE_EXTENSION_NAME);
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#elif defined(VK_USE_PLATFORM_XLIB_XRANDR_EXT)
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extensions.push_back(VK_EXT_ACQUIRE_XLIB_DISPLAY_EXTENSION_NAME);
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#endif
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return extensions;
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}
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#if defined(VK_USE_PLATFORM_WIN32_KHR)
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LRESULT CALLBACK WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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switch (uMsg)
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{
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case WM_CLOSE:
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PostQuitMessage(0);
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break;
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default:
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break;
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}
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return (DefWindowProc(hWnd, uMsg, wParam, lParam));
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}
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HWND initializeWindow(std::string const& className, std::string const& windowName, LONG width, LONG height)
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{
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WNDCLASSEX windowClass;
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memset(&windowClass, 0, sizeof(WNDCLASSEX));
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HINSTANCE instance = GetModuleHandle(nullptr);
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windowClass.cbSize = sizeof(WNDCLASSEX);
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windowClass.style = CS_HREDRAW | CS_VREDRAW;
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windowClass.lpfnWndProc = WindowProc;
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windowClass.hInstance = instance;
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windowClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
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windowClass.hCursor = LoadCursor(NULL, IDC_ARROW);
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windowClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
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windowClass.lpszClassName = className.c_str();
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windowClass.hIconSm = LoadIcon(NULL, IDI_WINLOGO);
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if (!RegisterClassEx(&windowClass))
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{
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throw std::runtime_error("Failed to register WNDCLASSEX -> terminating");
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}
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RECT windowRect = { 0, 0, width, height };
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AdjustWindowRect(&windowRect, WS_OVERLAPPEDWINDOW, FALSE);
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HWND window = CreateWindowEx(0, className.c_str(), windowName.c_str(), WS_OVERLAPPEDWINDOW | WS_VISIBLE | WS_SYSMENU, 100, 100, windowRect.right - windowRect.left,
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windowRect.bottom - windowRect.top, nullptr, nullptr, instance, nullptr);
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if (!window)
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{
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throw std::runtime_error("Failed to create window -> terminating");
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}
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return window;
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}
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#else
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#pragma error "unhandled platform"
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#endif
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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::ApplicationInfo appInfo(AppName, 1, EngineName, 1, VK_API_VERSION_1_1);
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std::vector<char const*> instanceExtensions = getInstanceExtensions();
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vk::InstanceCreateInfo instanceCreateInfo({}, &appInfo, 0, nullptr, static_cast<uint32_t>(instanceExtensions.size()), instanceExtensions.data());
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vk::UniqueInstance instance = vk::createInstanceUnique(instanceCreateInfo);
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std::vector<vk::PhysicalDevice> physicalDevices = instance->enumeratePhysicalDevices();
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assert(!physicalDevices.empty());
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/* VULKAN_HPP_KEY_START */
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uint32_t width = 50;
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uint32_t height = 50;
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#if defined(VK_USE_PLATFORM_WIN32_KHR)
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HWND window = initializeWindow(AppName, "Sample", width, height);
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vk::UniqueSurfaceKHR surface = instance->createWin32SurfaceKHRUnique(vk::Win32SurfaceCreateInfoKHR(vk::Win32SurfaceCreateFlagsKHR(), GetModuleHandle(nullptr), window));
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#else
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#pragma error "unhandled platform"
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#endif
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// determine a queueFamilyIndex that supports graphics
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std::vector<vk::QueueFamilyProperties> queueFamilyProperties = physicalDevices[0].getQueueFamilyProperties();
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size_t graphicsQueueFamilyIndex = std::distance(queueFamilyProperties.begin(),
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std::find_if(queueFamilyProperties.begin(),
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queueFamilyProperties.end(),
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[](vk::QueueFamilyProperties const& qfp) { return qfp.queueFlags & vk::QueueFlagBits::eGraphics; }));
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// determine a queueFamilyIndex that suports present
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// first check if the graphicsQueueFamiliyIndex is good enough
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size_t presentQueueFamilyIndex = physicalDevices[0].getSurfaceSupportKHR(static_cast<uint32_t>(graphicsQueueFamilyIndex), surface.get()) ? graphicsQueueFamilyIndex : queueFamilyProperties.size();
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if (presentQueueFamilyIndex == queueFamilyProperties.size())
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{
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// the graphicsQueueFamilyIndex doesn't support present -> look for an other family index that supports both graphics and present
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for (size_t i = 0; i < queueFamilyProperties.size(); i++)
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{
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if ((queueFamilyProperties[i].queueFlags & vk::QueueFlagBits::eGraphics) && physicalDevices[0].getSurfaceSupportKHR(static_cast<uint32_t>(i), surface.get()))
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{
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graphicsQueueFamilyIndex = i;
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presentQueueFamilyIndex = i;
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break;
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}
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}
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if (presentQueueFamilyIndex == queueFamilyProperties.size())
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{
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// there's nothing like a single family index that supports both graphics and present -> look for an other family index that supports present
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for (size_t i = 0; i < queueFamilyProperties.size(); i++)
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{
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if (physicalDevices[0].getSurfaceSupportKHR(static_cast<uint32_t>(i), surface.get()))
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{
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presentQueueFamilyIndex = i;
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break;
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}
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}
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}
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}
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if ((graphicsQueueFamilyIndex == queueFamilyProperties.size()) || (presentQueueFamilyIndex == queueFamilyProperties.size()))
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{
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throw std::runtime_error("Could not find a queue for graphics or present -> terminating");
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}
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// create a device
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float queuePriority = 0.0f;
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vk::DeviceQueueCreateInfo deviceQueueCreateInfo({}, static_cast<uint32_t>(graphicsQueueFamilyIndex), 1, &queuePriority);
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std::vector<char const*> deviceExtensionNames = getDeviceExtensions();
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vk::UniqueDevice device = physicalDevices[0].createDeviceUnique(vk::DeviceCreateInfo({}, 1, &deviceQueueCreateInfo, 0, nullptr, static_cast<uint32_t>(deviceExtensionNames.size()), deviceExtensionNames.data()));
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// get the supported VkFormats
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std::vector<vk::SurfaceFormatKHR> formats = physicalDevices[0].getSurfaceFormatsKHR(surface.get());
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assert(!formats.empty());
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vk::Format format = (formats[0].format == vk::Format::eUndefined) ? vk::Format::eB8G8R8A8Unorm : formats[0].format;
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vk::SurfaceCapabilitiesKHR surfaceCapabilities = physicalDevices[0].getSurfaceCapabilitiesKHR(surface.get());
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VkExtent2D swapchainExtent;
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if (surfaceCapabilities.currentExtent.width == std::numeric_limits<uint32_t>::max())
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{
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// If the surface size is undefined, the size is set to the size of the images requested.
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swapchainExtent.width = clamp(width, surfaceCapabilities.minImageExtent.width, surfaceCapabilities.maxImageExtent.width);
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swapchainExtent.height = clamp(height, surfaceCapabilities.minImageExtent.height, surfaceCapabilities.maxImageExtent.height);
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}
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else
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{
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// If the surface size is defined, the swap chain size must match
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swapchainExtent = surfaceCapabilities.currentExtent;
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}
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// The FIFO present mode is guaranteed by the spec to be supported
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vk::PresentModeKHR swapchainPresentMode = vk::PresentModeKHR::eFifo;
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vk::SurfaceTransformFlagBitsKHR preTransform = (surfaceCapabilities.supportedTransforms & vk::SurfaceTransformFlagBitsKHR::eIdentity) ? vk::SurfaceTransformFlagBitsKHR::eIdentity : surfaceCapabilities.currentTransform;
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vk::CompositeAlphaFlagBitsKHR compositeAlpha =
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(surfaceCapabilities.supportedCompositeAlpha & vk::CompositeAlphaFlagBitsKHR::ePreMultiplied) ? vk::CompositeAlphaFlagBitsKHR::ePreMultiplied :
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(surfaceCapabilities.supportedCompositeAlpha & vk::CompositeAlphaFlagBitsKHR::ePostMultiplied) ? vk::CompositeAlphaFlagBitsKHR::ePostMultiplied :
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(surfaceCapabilities.supportedCompositeAlpha & vk::CompositeAlphaFlagBitsKHR::eInherit) ? vk::CompositeAlphaFlagBitsKHR::eInherit : vk::CompositeAlphaFlagBitsKHR::eOpaque;
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vk::SwapchainCreateInfoKHR swapChainCreateInfo(vk::SwapchainCreateFlagsKHR(), surface.get(), surfaceCapabilities.minImageCount, format, vk::ColorSpaceKHR::eSrgbNonlinear,
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swapchainExtent, 1, vk::ImageUsageFlagBits::eColorAttachment, vk::SharingMode::eExclusive, 0, nullptr, preTransform, compositeAlpha, swapchainPresentMode, true, nullptr);
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uint32_t queueFamilyIndices[2] = { static_cast<uint32_t>(graphicsQueueFamilyIndex), static_cast<uint32_t>(presentQueueFamilyIndex) };
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if (graphicsQueueFamilyIndex != presentQueueFamilyIndex)
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{
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// If the graphics and present queues are from different queue families, we either have to explicitly transfer ownership of images between
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// the queues, or we have to create the swapchain with imageSharingMode as VK_SHARING_MODE_CONCURRENT
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swapChainCreateInfo.imageSharingMode = vk::SharingMode::eConcurrent;
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swapChainCreateInfo.queueFamilyIndexCount = 2;
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swapChainCreateInfo.pQueueFamilyIndices = queueFamilyIndices;
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}
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vk::UniqueSwapchainKHR swapChain = device->createSwapchainKHRUnique(swapChainCreateInfo);
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std::vector<vk::Image> swapChainImages = device->getSwapchainImagesKHR(swapChain.get());
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std::vector<vk::UniqueImageView> imageViews;
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imageViews.reserve(swapChainImages.size());
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for (auto image : swapChainImages)
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{
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vk::ComponentMapping componentMapping(vk::ComponentSwizzle::eR, vk::ComponentSwizzle::eG, vk::ComponentSwizzle::eB, vk::ComponentSwizzle::eA);
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vk::ImageSubresourceRange subResourceRange(vk::ImageAspectFlagBits::eColor, 0, 1, 0, 1);
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vk::ImageViewCreateInfo imageViewCreateInfo(vk::ImageViewCreateFlags(), image, vk::ImageViewType::e2D, format, componentMapping, subResourceRange);
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imageViews.push_back(device->createImageViewUnique(imageViewCreateInfo));
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}
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#if defined(VK_USE_PLATFORM_WIN32_KHR)
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DestroyWindow(window);
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#else
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#pragma error "unhandled platform"
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#endif
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// Note: No need to explicitly destroy the ImageViews or the swapChain, as the corresponding destroy
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// functions are called by the destructor of the UniqueImageView and the UniqueSwapChainKHR on leaving this scope.
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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::runtime_error err)
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{
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std::cout << "std::runtime_error: " << 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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