126 lines
4 KiB
C++
126 lines
4 KiB
C++
#include <ranges>
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#include <renderer/vk/context/device.hpp>
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#include <renderer/vk/context/instance.hpp>
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#include <renderer/vk/context/surface.hpp>
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#include <renderer/vk/context/swapchain.hpp>
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#include <renderer/vk/debug/validation.hpp>
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namespace lt::renderer::vk {
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Swapchain::Swapchain(const Device &device, const Surface &surface): m_device(device.vk())
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{
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static auto idx = 0u;
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auto *physical_device = device.physical();
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auto capabilities = VkSurfaceCapabilitiesKHR {};
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vkc(vk_get_physical_device_surface_capabilities(physical_device, surface.vk(), &capabilities));
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auto count = uint32_t { 0 };
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vkc(vk_get_physical_device_surface_formats(physical_device, surface.vk(), &count, nullptr));
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auto formats = std::vector<VkSurfaceFormatKHR>(count);
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vkc(vk_get_physical_device_surface_formats(
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physical_device,
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surface.vk(),
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&count,
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formats.data()
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));
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ensure(!formats.empty(), "Surface has no formats!");
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// TODO(Light): parameterize
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constexpr auto desired_swapchain_image_count = uint32_t { 3 };
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const auto surface_format = formats.front();
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const auto queue_indices = device.get_family_indices();
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m_format = surface_format.format;
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auto create_info = VkSwapchainCreateInfoKHR {
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.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR,
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.surface = surface.vk(),
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.minImageCount = get_optimal_image_count(capabilities, desired_swapchain_image_count),
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.imageFormat = surface_format.format,
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.imageColorSpace = surface_format.colorSpace,
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.imageExtent = capabilities.currentExtent,
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.imageArrayLayers = 1u,
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.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT,
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.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE,
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.queueFamilyIndexCount = queue_indices.size(),
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.pQueueFamilyIndices = queue_indices.data(),
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.preTransform = capabilities.currentTransform,
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.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR,
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.presentMode = VK_PRESENT_MODE_FIFO_KHR, // TODO(Light): parameterize
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.clipped = VK_TRUE,
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.oldSwapchain = nullptr,
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};
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m_resolution = capabilities.currentExtent;
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vkc(vk_create_swapchain_khr(device.vk(), &create_info, nullptr, &m_swapchain));
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vkc(vk_device_wait_idle(device.vk()));
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set_object_name(device.vk(), m_swapchain.get(), "swapchain {}", idx++);
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auto image_count = uint32_t { 0u };
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vk_get_swapchain_images_khr(device.vk(), m_swapchain, &image_count, nullptr);
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m_images.resize(image_count);
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m_image_views.resize(image_count);
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vk_get_swapchain_images_khr(device.vk(), m_swapchain, &image_count, m_images.data());
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for (auto [image, view] : std::views::zip(m_images, m_image_views))
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{
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auto create_info = VkImageViewCreateInfo {
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.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
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.image = image,
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.viewType = VK_IMAGE_VIEW_TYPE_2D,
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.format = surface_format.format,
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.components = VkComponentMapping {
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.r = VK_COMPONENT_SWIZZLE_IDENTITY,
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.g = VK_COMPONENT_SWIZZLE_IDENTITY,
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.b = VK_COMPONENT_SWIZZLE_IDENTITY,
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.a = VK_COMPONENT_SWIZZLE_IDENTITY,
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},
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.subresourceRange = VkImageSubresourceRange {
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.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
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.baseMipLevel = 0u,
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.levelCount = 1u,
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.baseArrayLayer = 0u,
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.layerCount = 1u,
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}
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};
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vkc(vk_create_image_view(device.vk(), &create_info, nullptr, &view));
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}
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}
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Swapchain::~Swapchain()
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{
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destroy();
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}
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[[nodiscard]] auto Swapchain::get_optimal_image_count(
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VkSurfaceCapabilitiesKHR capabilities,
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uint32_t desired_image_count
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) const -> uint32_t
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{
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const auto min_image_count = capabilities.minImageCount;
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const auto max_image_count = capabilities.maxImageCount;
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const auto has_max_limit = max_image_count != 0;
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// Desired image count is in range
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if ((!has_max_limit || max_image_count >= desired_image_count)
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&& min_image_count <= desired_image_count)
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{
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return desired_image_count;
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}
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// Fall-back to 2 if in ange
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if (min_image_count <= 2 && max_image_count >= 2)
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{
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return 2;
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}
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// Fall-back to min_image_count
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return min_image_count;
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}
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} // namespace lt::renderer::vk
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