Vulkan-Hpp/samples/05_InitSwapchain/05_InitSwapchain.cpp
2018-08-17 17:47:48 +02:00

283 lines
12 KiB
C++

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