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/*
* Copyright 2022 Frederico de Oliveira Linhares
*
* 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.
*/
#include "swapchain.hpp"
#include "../core.hpp"
#include <vector>
namespace
{
void
load_swapchain(void *obj)
{
auto self = static_cast<VK::Swapchain*>(obj);
// Surface formats.
uint32_t vk_surface_format_count;
std::vector<VkSurfaceFormatKHR> vk_surface_formats;
vkGetPhysicalDeviceSurfaceFormatsKHR(
cg_core.vk_device_with_swapchain->physical_device, cg_core.window_surface,
&vk_surface_format_count, nullptr);
vk_surface_formats.resize(vk_surface_format_count);
vkGetPhysicalDeviceSurfaceFormatsKHR(
cg_core.vk_device_with_swapchain->physical_device, cg_core.window_surface,
&vk_surface_format_count, vk_surface_formats.data());
VkSwapchainCreateInfoKHR swapchain_create_info = {};
swapchain_create_info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
swapchain_create_info.pNext = nullptr;
swapchain_create_info.flags = 0;
swapchain_create_info.surface = cg_core.window_surface;
swapchain_create_info.minImageCount = 3; // triple buffering.
self->image_format = vk_surface_formats[0].format;
swapchain_create_info.imageFormat = self->image_format;
swapchain_create_info.imageColorSpace = vk_surface_formats[0].colorSpace;
swapchain_create_info.imageExtent = {
cg_core.screen_width, cg_core.screen_height};
swapchain_create_info.imageArrayLayers = 1;
swapchain_create_info.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
swapchain_create_info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
swapchain_create_info.queueFamilyIndexCount = 0;
swapchain_create_info.pQueueFamilyIndices = nullptr;
swapchain_create_info.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
swapchain_create_info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
swapchain_create_info.presentMode = VK_PRESENT_MODE_FIFO_KHR;
swapchain_create_info.clipped = VK_FALSE;
swapchain_create_info.oldSwapchain = VK_NULL_HANDLE;
if(vkCreateSwapchainKHR(
cg_core.vk_device_with_swapchain->device, &swapchain_create_info,
nullptr, &self->swapchain) != VK_SUCCESS)
throw CommandError{"Vulkan failed to create swapchain."};
vkGetSwapchainImagesKHR(
cg_core.vk_device_with_swapchain->device, self->swapchain,
&self->images_count, nullptr);
self->images = new VkImage[self->images_count];
vkGetSwapchainImagesKHR(
cg_core.vk_device_with_swapchain->device, self->swapchain,
&self->images_count, self->images);
}
void
unload_swapchain(void *obj)
{
auto self = static_cast<VK::Swapchain*>(obj);
delete[] self->images;
vkDestroySwapchainKHR(
cg_core.vk_device_with_swapchain->device, self->swapchain, nullptr);
}
void
load_image_view(void *obj)
{
auto self = static_cast<VK::Swapchain*>(obj);
self->image_views = new VkImageView[self->images_count];
for(auto i{0}; i < self->images_count; i++)
{
VkImageViewCreateInfo create_info = {};
create_info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
create_info.image = self->images[i];
create_info.viewType = VK_IMAGE_VIEW_TYPE_2D;
create_info.format = self->image_format;
create_info.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
create_info.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
create_info.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
create_info.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
create_info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
create_info.subresourceRange.baseMipLevel = 0;
create_info.subresourceRange.levelCount = 1;
create_info.subresourceRange.baseArrayLayer = 0;
create_info.subresourceRange.layerCount = 1;
if(vkCreateImageView(
cg_core.vk_device_with_swapchain->device, &create_info, nullptr,
&self->image_views[i]))
throw CommandError{"Could no create Image View for swapchain."};
}
}
void
unload_image_view(void *obj)
{
auto self = static_cast<VK::Swapchain*>(obj);
for(auto i{0}; i < self->images_count; i++)
vkDestroyImageView(
cg_core.vk_device_with_swapchain->device, self->image_views[i], nullptr);
}
const CommandChain loader{
{&load_swapchain, &unload_swapchain},
{&load_image_view, &unload_image_view}
};
}
namespace VK
{
Swapchain::Swapchain()
{
loader.execute(this);
}
Swapchain::~Swapchain()
{
loader.revert(this);
}
}
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