EDIT: folder structure refactoring (src/core)
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218
src/core/device/swapchain.cpp
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218
src/core/device/swapchain.cpp
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#include "swapchain.h"
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#include <SDL_video.h>
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#include "SDL2/SDL_vulkan.h"
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#include "device.h"
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#include "core/util/initializers.h"
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#include "resource.h"
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// Swapchain + per-frame targets (HDR draw, depth, GBuffer) management.
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//
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// Create/resize/destroy logic keeps per-frame images in a local deletion queue
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// so they are cleaned up with the swapchain. The engine imports those images
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// into the Render Graph each frame.
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void SwapchainManager::init_swapchain()
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{
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create_swapchain(_windowExtent.width, _windowExtent.height);
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// Create images used across the frame (draw, depth, GBuffer)
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// Split to helper so we can reuse on resize
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// (Definition added below)
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//
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// On creation we also push a cleanup lambda to _deletionQueue for final shutdown.
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// On resize we will flush that queue first to destroy previous resources.
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// depth/draw/gbuffer sized to current window extent
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auto create_frame_images = [this]() {
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VkExtent3D drawImageExtent = { _windowExtent.width, _windowExtent.height, 1 };
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// Draw HDR target
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_drawImage.imageFormat = VK_FORMAT_R16G16B16A16_SFLOAT;
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_drawImage.imageExtent = drawImageExtent;
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VkImageUsageFlags drawImageUsages{};
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drawImageUsages |= VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
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drawImageUsages |= VK_IMAGE_USAGE_STORAGE_BIT;
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drawImageUsages |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
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// Post-processing (tonemap) samples HDR; allow sampling.
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drawImageUsages |= VK_IMAGE_USAGE_SAMPLED_BIT;
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VkImageCreateInfo rimg_info = vkinit::image_create_info(_drawImage.imageFormat, drawImageUsages, drawImageExtent);
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VmaAllocationCreateInfo rimg_allocinfo = {};
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rimg_allocinfo.usage = VMA_MEMORY_USAGE_GPU_ONLY;
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rimg_allocinfo.requiredFlags = static_cast<VkMemoryPropertyFlags>(VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
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vmaCreateImage(_deviceManager->allocator(), &rimg_info, &rimg_allocinfo,
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&_drawImage.image, &_drawImage.allocation, nullptr);
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VkImageViewCreateInfo rview_info = vkinit::imageview_create_info(_drawImage.imageFormat, _drawImage.image,
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VK_IMAGE_ASPECT_COLOR_BIT);
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VK_CHECK(vkCreateImageView(_deviceManager->device(), &rview_info, nullptr, &_drawImage.imageView));
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// Depth
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_depthImage.imageFormat = VK_FORMAT_D32_SFLOAT;
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_depthImage.imageExtent = drawImageExtent;
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VkImageUsageFlags depthImageUsages{};
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depthImageUsages |= VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
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VkImageCreateInfo dimg_info = vkinit::image_create_info(_depthImage.imageFormat, depthImageUsages, drawImageExtent);
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vmaCreateImage(_deviceManager->allocator(), &dimg_info, &rimg_allocinfo, &_depthImage.image,
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&_depthImage.allocation, nullptr);
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VkImageViewCreateInfo dview_info = vkinit::imageview_create_info(_depthImage.imageFormat, _depthImage.image,
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VK_IMAGE_ASPECT_DEPTH_BIT);
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VK_CHECK(vkCreateImageView(_deviceManager->device(), &dview_info, nullptr, &_depthImage.imageView));
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// GBuffer (SRGB not used to keep linear lighting)
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_gBufferPosition = _resourceManager->create_image(drawImageExtent, VK_FORMAT_R32G32B32A32_SFLOAT,
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VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT);
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_gBufferNormal = _resourceManager->create_image(drawImageExtent, VK_FORMAT_R16G16B16A16_SFLOAT,
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VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT);
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_gBufferAlbedo = _resourceManager->create_image(drawImageExtent, VK_FORMAT_R8G8B8A8_UNORM,
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VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT);
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_idBuffer = _resourceManager->create_image(drawImageExtent, VK_FORMAT_R32_UINT,
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VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT |
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VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
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VK_IMAGE_USAGE_SAMPLED_BIT);
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_deletionQueue.push_function([=]() {
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vkDestroyImageView(_deviceManager->device(), _drawImage.imageView, nullptr);
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vmaDestroyImage(_deviceManager->allocator(), _drawImage.image, _drawImage.allocation);
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vkDestroyImageView(_deviceManager->device(), _depthImage.imageView, nullptr);
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vmaDestroyImage(_deviceManager->allocator(), _depthImage.image, _depthImage.allocation);
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_resourceManager->destroy_image(_gBufferPosition);
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_resourceManager->destroy_image(_gBufferNormal);
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_resourceManager->destroy_image(_gBufferAlbedo);
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_resourceManager->destroy_image(_idBuffer);
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});
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};
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create_frame_images();
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}
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void SwapchainManager::cleanup()
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{
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_deletionQueue.flush();
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destroy_swapchain();
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fmt::print("SwapchainManager::cleanup()\n");
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}
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void SwapchainManager::create_swapchain(uint32_t width, uint32_t height)
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{
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vkb::SwapchainBuilder swapchainBuilder{
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_deviceManager->physicalDevice(), _deviceManager->device(), _deviceManager->surface()
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};
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_swapchainImageFormat = VK_FORMAT_B8G8R8A8_UNORM;
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vkb::Swapchain vkbSwapchain = swapchainBuilder
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//.use_default_format_selection()
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.set_desired_format(VkSurfaceFormatKHR{
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.format = _swapchainImageFormat, .colorSpace = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR
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})
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//use vsync present mode
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.set_desired_present_mode(VK_PRESENT_MODE_FIFO_KHR)
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.set_desired_extent(width, height)
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.add_image_usage_flags(VK_IMAGE_USAGE_TRANSFER_DST_BIT)
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.build()
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.value();
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_swapchainExtent = vkbSwapchain.extent;
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//store swapchain and its related images
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_swapchain = vkbSwapchain.swapchain;
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_swapchainImages = vkbSwapchain.get_images().value();
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_swapchainImageViews = vkbSwapchain.get_image_views().value();
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}
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void SwapchainManager::destroy_swapchain() const
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{
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// Destroy image views before the swapchain for stricter driver orderliness.
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// (Most drivers tolerate either order, but views reference swapchain images.)
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for (auto view : _swapchainImageViews)
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{
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vkDestroyImageView(_deviceManager->device(), view, nullptr);
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}
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vkDestroySwapchainKHR(_deviceManager->device(), _swapchain, nullptr);
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}
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void SwapchainManager::resize_swapchain(struct SDL_Window *window)
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{
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vkDeviceWaitIdle(_deviceManager->device());
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destroy_swapchain();
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// Destroy per-frame images before recreating them
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_deletionQueue.flush();
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int w, h;
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// HiDPI-aware drawable size for correct pixel dimensions
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SDL_Vulkan_GetDrawableSize(window, &w, &h);
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_windowExtent.width = w;
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_windowExtent.height = h;
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create_swapchain(_windowExtent.width, _windowExtent.height);
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// Recreate frame images at the new size
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// (duplicate the same logic used at init time)
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VkExtent3D drawImageExtent = { _windowExtent.width, _windowExtent.height, 1 };
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_drawImage.imageFormat = VK_FORMAT_R16G16B16A16_SFLOAT;
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_drawImage.imageExtent = drawImageExtent;
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VkImageUsageFlags drawImageUsages{};
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drawImageUsages |= VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
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drawImageUsages |= VK_IMAGE_USAGE_STORAGE_BIT;
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drawImageUsages |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
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drawImageUsages |= VK_IMAGE_USAGE_SAMPLED_BIT;
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VkImageCreateInfo rimg_info = vkinit::image_create_info(_drawImage.imageFormat, drawImageUsages, drawImageExtent);
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VmaAllocationCreateInfo rimg_allocinfo = {};
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rimg_allocinfo.usage = VMA_MEMORY_USAGE_GPU_ONLY;
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rimg_allocinfo.requiredFlags = static_cast<VkMemoryPropertyFlags>(VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
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vmaCreateImage(_deviceManager->allocator(), &rimg_info, &rimg_allocinfo, &_drawImage.image, &_drawImage.allocation,
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nullptr);
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VkImageViewCreateInfo rview_info = vkinit::imageview_create_info(_drawImage.imageFormat, _drawImage.image,
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VK_IMAGE_ASPECT_COLOR_BIT);
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VK_CHECK(vkCreateImageView(_deviceManager->device(), &rview_info, nullptr, &_drawImage.imageView));
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_depthImage.imageFormat = VK_FORMAT_D32_SFLOAT;
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_depthImage.imageExtent = drawImageExtent;
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VkImageUsageFlags depthImageUsages{};
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depthImageUsages |= VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
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VkImageCreateInfo dimg_info = vkinit::image_create_info(_depthImage.imageFormat, depthImageUsages, drawImageExtent);
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vmaCreateImage(_deviceManager->allocator(), &dimg_info, &rimg_allocinfo, &_depthImage.image,
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&_depthImage.allocation, nullptr);
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VkImageViewCreateInfo dview_info = vkinit::imageview_create_info(_depthImage.imageFormat, _depthImage.image,
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VK_IMAGE_ASPECT_DEPTH_BIT);
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VK_CHECK(vkCreateImageView(_deviceManager->device(), &dview_info, nullptr, &_depthImage.imageView));
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_gBufferPosition = _resourceManager->create_image(drawImageExtent, VK_FORMAT_R16G16B16A16_SFLOAT,
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VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT);
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_gBufferNormal = _resourceManager->create_image(drawImageExtent, VK_FORMAT_R16G16B16A16_SFLOAT,
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VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT);
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_gBufferAlbedo = _resourceManager->create_image(drawImageExtent, VK_FORMAT_R8G8B8A8_UNORM,
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VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT);
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_idBuffer = _resourceManager->create_image(drawImageExtent, VK_FORMAT_R32_UINT,
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VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT |
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VK_IMAGE_USAGE_TRANSFER_SRC_BIT |
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VK_IMAGE_USAGE_SAMPLED_BIT);
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_deletionQueue.push_function([=]() {
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vkDestroyImageView(_deviceManager->device(), _drawImage.imageView, nullptr);
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vmaDestroyImage(_deviceManager->allocator(), _drawImage.image, _drawImage.allocation);
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vkDestroyImageView(_deviceManager->device(), _depthImage.imageView, nullptr);
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vmaDestroyImage(_deviceManager->allocator(), _depthImage.image, _depthImage.allocation);
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_resourceManager->destroy_image(_gBufferPosition);
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_resourceManager->destroy_image(_gBufferNormal);
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_resourceManager->destroy_image(_gBufferAlbedo);
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_resourceManager->destroy_image(_idBuffer);
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});
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resize_requested = false;
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}
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