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/*
* Class wrapping access to the swap chain
*
* A swap chain is a collection of framebuffers used for rendering and presentation to the windowing system
*
* Copyright (C) 2016-2017 by Sascha Willems - www.saschawillems.de
*
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
*/
#pragma once
#include "VulkanSwapChain.hpp"
#include "VkEngine.h"
vke::VulkanSwapChain::VulkanSwapChain(ptrVkEngine _vke, bool vsync) {
vke = _vke;
GET_INSTANCE_PROC_ADDR(vke->instance, GetPhysicalDeviceSurfaceSupportKHR);
GET_INSTANCE_PROC_ADDR(vke->instance, GetPhysicalDeviceSurfaceCapabilitiesKHR);
GET_INSTANCE_PROC_ADDR(vke->instance, GetPhysicalDeviceSurfaceFormatsKHR);
GET_INSTANCE_PROC_ADDR(vke->instance, GetPhysicalDeviceSurfacePresentModesKHR);
GET_DEVICE_PROC_ADDR(vke->device->dev, CreateSwapchainKHR);
GET_DEVICE_PROC_ADDR(vke->device->dev, DestroySwapchainKHR);
GET_DEVICE_PROC_ADDR(vke->device->dev, GetSwapchainImagesKHR);
GET_DEVICE_PROC_ADDR(vke->device->dev, AcquireNextImageKHR);
GET_DEVICE_PROC_ADDR(vke->device->dev, QueuePresentKHR);
infos.surface = vke->surface;
infos.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
infos.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
infos.imageArrayLayers = 1;
infos.clipped = VK_TRUE;
uint32_t formatCount;
VK_CHECK_RESULT(fpGetPhysicalDeviceSurfaceFormatsKHR(
vke->device->phy, vke->surface, &formatCount, NULL));
assert(formatCount > 0);
std::vector<VkSurfaceFormatKHR> surfaceFormats(formatCount);
VK_CHECK_RESULT(fpGetPhysicalDeviceSurfaceFormatsKHR(
vke->device->phy, vke->surface, &formatCount, surfaceFormats.data()));
// If the surface format list only includes one entry with VK_FORMAT_UNDEFINED,
// there is no preferered format, so we assume VK_FORMAT_B8G8R8A8_UNORM
if ((formatCount == 1) && (surfaceFormats[0].format == VK_FORMAT_UNDEFINED))
{
infos.imageFormat = VK_FORMAT_B8G8R8A8_UNORM;
infos.imageColorSpace = surfaceFormats[0].colorSpace;
}
else
{
// iterate over the list of available surface format and
// check for the presence of VK_FORMAT_B8G8R8A8_UNORM
bool found_B8G8R8A8_UNORM = false;
for (auto&& surfaceFormat : surfaceFormats)
{
if (surfaceFormat.format == VK_FORMAT_B8G8R8A8_UNORM)
{
infos.imageFormat = surfaceFormat.format;
infos.imageColorSpace = surfaceFormat.colorSpace;
found_B8G8R8A8_UNORM = true;
break;
}
}
// in case VK_FORMAT_B8G8R8A8_UNORM is not available
// select the first available color format
if (!found_B8G8R8A8_UNORM)
{
infos.imageFormat = surfaceFormats[0].format;
infos.imageColorSpace = surfaceFormats[0].colorSpace;
}
}
// Set additional usage flag for blitting from the swapchain images if supported
VkFormatProperties formatProps;
vkGetPhysicalDeviceFormatProperties(vke->device->phy, infos.imageFormat, &formatProps);
if ((formatProps.optimalTilingFeatures & VK_FORMAT_FEATURE_TRANSFER_SRC_BIT_KHR)
|| (formatProps.optimalTilingFeatures & VK_FORMAT_FEATURE_BLIT_SRC_BIT))
infos.imageUsage |= VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
VkSurfaceCapabilitiesKHR surfCaps;
VK_CHECK_RESULT(fpGetPhysicalDeviceSurfaceCapabilitiesKHR(
vke->device->phy, vke->surface, &surfCaps));
infos.minImageCount = surfCaps.minImageCount + 1;
if ((surfCaps.maxImageCount > 0) && (infos.minImageCount > surfCaps.maxImageCount))
infos.minImageCount = surfCaps.maxImageCount;
if (surfCaps.supportedTransforms & VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR)
infos.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
else
infos.preTransform = surfCaps.currentTransform;
infos.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
std::vector<VkCompositeAlphaFlagBitsKHR> compositeAlphaFlags = {
VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR,
VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR,
VK_COMPOSITE_ALPHA_POST_MULTIPLIED_BIT_KHR,
VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR,
};
for (auto& compositeAlphaFlag : compositeAlphaFlags) {
if (surfCaps.supportedCompositeAlpha & compositeAlphaFlag) {
infos.compositeAlpha = compositeAlphaFlag;
break;
};
}
uint32_t presentModeCount;
VK_CHECK_RESULT(fpGetPhysicalDeviceSurfacePresentModesKHR(
vke->device->phy, vke->surface, &presentModeCount, NULL));
assert(presentModeCount > 0);
std::vector<VkPresentModeKHR> presentModes(presentModeCount);
VK_CHECK_RESULT(fpGetPhysicalDeviceSurfacePresentModesKHR(
vke->device->phy, vke->surface, &presentModeCount, presentModes.data()));
// v-sync mode
infos.presentMode = VK_PRESENT_MODE_FIFO_KHR;
if (!vsync)
{
for (size_t i = 0; i < presentModeCount; i++)
{
if (presentModes[i] == VK_PRESENT_MODE_MAILBOX_KHR)
{
infos.presentMode = VK_PRESENT_MODE_MAILBOX_KHR;
break;
}
if ((infos.presentMode != VK_PRESENT_MODE_MAILBOX_KHR) && (presentModes[i] == VK_PRESENT_MODE_IMMEDIATE_KHR))
infos.presentMode = VK_PRESENT_MODE_IMMEDIATE_KHR;
}
}
depthFormat = vke->device->getSuitableDepthFormat();
presentCompleteSemaphore = vke->device->createSemaphore();
presentInfo = {VK_STRUCTURE_TYPE_PRESENT_INFO_KHR};
presentInfo.swapchainCount = 1;
}
vke::VulkanSwapChain::~VulkanSwapChain()
{
vke->device->destroySemaphore(presentCompleteSemaphore);
if (swapChain != VK_NULL_HANDLE)
{
for (uint32_t i = 0; i < imageCount; i++)
vkDestroyImageView(vke->device->dev, buffers[i].view, nullptr);
fpDestroySwapchainKHR(vke->device->dev, swapChain, nullptr);
}
swapChain = VK_NULL_HANDLE;
}
void vke::VulkanSwapChain::create(uint32_t& width, uint32_t& height)
{
vkDeviceWaitIdle (vke->device->dev);
infos.oldSwapchain = swapChain;
VkSurfaceCapabilitiesKHR surfCaps;
VK_CHECK_RESULT(fpGetPhysicalDeviceSurfaceCapabilitiesKHR(
vke->device->phy, vke->surface, &surfCaps));
if (surfCaps.currentExtent.width == 0xFFFFFFFF) {
if (width < surfCaps.minImageExtent.width)
width = surfCaps.minImageExtent.width;
else if (width > surfCaps.maxImageExtent.width)
width = surfCaps.maxImageExtent.width;
if (height < surfCaps.minImageExtent.height)
height = surfCaps.minImageExtent.height;
else if (height > surfCaps.maxImageExtent.height)
height = surfCaps.maxImageExtent.height;
}else{
// If the surface size is defined, the swap chain size must match
width = surfCaps.currentExtent.width;
height= surfCaps.currentExtent.height;
}
infos.imageExtent = {width, height};
VK_CHECK_RESULT(fpCreateSwapchainKHR(vke->device->dev, &infos, nullptr, &swapChain));
presentInfo.pSwapchains = &swapChain;
for (uint i=0; i<boundRenderTargets.size(); i++)
boundRenderTargets[i]->updateSize();
// If an existing swap chain is re-created, destroy the old swap chain
// This also cleans up all the presentable images
if (infos.oldSwapchain != VK_NULL_HANDLE)
{
for (uint32_t i = 0; i < imageCount; i++)
vkDestroyImageView(vke->device->dev, buffers[i].view, nullptr);
fpDestroySwapchainKHR(vke->device->dev, infos.oldSwapchain, nullptr);
}
VK_CHECK_RESULT(fpGetSwapchainImagesKHR(vke->device->dev, swapChain, &imageCount, NULL));
VkImage images[imageCount];
VK_CHECK_RESULT(fpGetSwapchainImagesKHR(vke->device->dev, swapChain, &imageCount, images));
// Get the swap chain buffers containing the image and imageview
buffers.resize(imageCount);
for (uint32_t i = 0; i < imageCount; i++)
{
VkImageViewCreateInfo colorAttachmentView = {VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO};
colorAttachmentView.format = infos.imageFormat;
colorAttachmentView.components = {
VK_COMPONENT_SWIZZLE_R,
VK_COMPONENT_SWIZZLE_G,
VK_COMPONENT_SWIZZLE_B,
VK_COMPONENT_SWIZZLE_A
};
colorAttachmentView.subresourceRange= {VK_IMAGE_ASPECT_COLOR_BIT,0,1,0,1};
colorAttachmentView.viewType = VK_IMAGE_VIEW_TYPE_2D;
buffers[i].image = images[i];
colorAttachmentView.image = buffers[i].image;
VK_CHECK_RESULT(vkCreateImageView(vke->device->dev, &colorAttachmentView, nullptr, &buffers[i].view));
}
for (uint i=0; i<boundRenderTargets.size(); i++)
boundRenderTargets[i]->createFrameBuffers ();
}
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