Add swapchain (work in progress)

src/display/window.rs

@@ -35,6 +35,7 @@ impl Window {
         let mut extension_names = ash_window::enumerate_required_extensions(display_handle.as_raw())?
             .to_vec();
 
+        // TODO: Move this because is not related to Window extensions
         #[cfg(any(target_os = "macos", target_os = "ios"))]
         {
             extension_names.push(ash::khr::portability_enumeration::NAME.as_ptr());
@@ -48,6 +49,10 @@ impl Window {
     pub fn handle(&self) -> Option<&winit::window::Window> {
         self.handle.as_ref()
     }
+    
+    pub fn size(&self) -> Option<winit::dpi::Size> {
+        self.window_attributes.inner_size
+    }
 
     pub fn window_event(&mut self, _event_loop: &ActiveEventLoop, _id: WindowId, event: WindowEvent) {
         match event {

src/vulkan/mod.rs

@@ -15,4 +15,7 @@ pub use vk_physical_device::VkPhysicalDevice;
 pub(self) mod vk_device;
 pub use vk_device::VkDevice;
 
+pub(self) mod vk_swapchain;
+pub use vk_swapchain::VkSwapchain;
+
 mod utils;

src/vulkan/vk_device.rs

@@ -2,7 +2,7 @@ use ash::vk;
 use crate::vulkan::{VkInstance, VkPhysicalDevice};
 
 pub struct VkDevice {
-    handle: ash::Device,
+    pub(crate) handle: ash::Device,
     queue_family_index: u32
 }
 

src/vulkan/vk_instance.rs

@@ -11,8 +11,8 @@ use std::fmt::{Display, Formatter};
 use winit::raw_window_handle::{HasDisplayHandle, HasWindowHandle};
 
 pub struct VkInstance {
-    entry: Entry,
+    pub(super) entry: Entry,
-    handle: Instance,
+    pub(super) handle: Instance,
 }
 
 impl VkInstance {

src/vulkan/vk_render_context.rs

@@ -1,9 +1,11 @@
-use crate::vulkan::{VkDevice, VkInstance, VkPhysicalDevice, VkSurface};
+use crate::vulkan::{VkDevice, VkInstance, VkPhysicalDevice, VkSurface, VkSwapchain};
 use ash::vk::QueueFlags;
 
 pub struct VkRenderContext {
     instance: VkInstance,
     surface: VkSurface,
+    device: VkDevice,
+    swapchain: VkSwapchain
 }
 
 impl VkRenderContext {
@@ -26,19 +28,20 @@ impl VkRenderContext {
         let device = VkDevice::new_graphics_device(&instance, &physical_device, queue_family_index)
             .expect("Unable to create device");
 
-        let present_queue = device.get_device_queue(0);
+        let swapchain = surface.create_swapchain(
+            &window,
+            &instance,
+            &device,
+            &physical_device
+        ).expect("Unable to create swapchain");
 
-        let surface_format = surface.get_physical_device_surface_formats(physical_device)
+        // let present_queue = device.get_device_queue(0);
-            .unwrap_or_default()
-            .first()
-            .expect("Unable to get surface format");
-
-        let surface_capabilities = surface.get_physical_device_surface_capabilities(physical_device)
-            .expect("Unable to get surface capabilities");
 
         Ok(Self {
             instance,
             surface,
+            device,
+            swapchain
         })
     }
 }

src/vulkan/vk_surface.rs

@@ -1,6 +1,7 @@
-use crate::vulkan::{VkPhysicalDevice, LOG_TARGET};
+use crate::vulkan::{VkDevice, VkInstance, VkPhysicalDevice, VkSwapchain, LOG_TARGET};
 use ash::prelude::VkResult;
 use ash::vk;
+use crate::display::Window;
 
 pub struct VkSurface {
     surface_loader: ash::khr::surface::Instance,
@@ -54,6 +55,92 @@ impl VkSurface {
             )
         }
     }
+
+    pub fn create_swapchain(
+        &self,
+        window: &Window,
+        instance: &VkInstance,
+        device: &VkDevice,
+        physical_device: &VkPhysicalDevice,
+    ) -> anyhow::Result<VkSwapchain> {
+        log::debug!(target: LOG_TARGET, "Creating swapchain");
+
+        let surface_formats = self.get_physical_device_surface_formats(physical_device)?;
+        log::debug!(target: LOG_TARGET, "Supported surface formats by physical device: {surface_formats:#?}");
+
+        let surface_format = surface_formats.first()
+            .ok_or_else(|| anyhow::anyhow!("No available surface formats"))?;
+        log::debug!(target: LOG_TARGET, "Selected surface format: {surface_format:?}");
+
+        let surface_capabilities = self.get_physical_device_surface_capabilities(physical_device)?;
+        log::debug!(target: LOG_TARGET, "Surface capabilities: {surface_capabilities:#?}");
+
+        let mut desired_image_count = surface_capabilities.min_image_count + 1;
+        if surface_capabilities.max_image_count > 0
+            && desired_image_count > surface_capabilities.max_image_count
+        {
+            desired_image_count = surface_capabilities.max_image_count;
+        }
+        log::debug!(target: LOG_TARGET, "Selected surface image count: {desired_image_count}");
+
+        let window_size = window.size()
+            .ok_or_else(|| anyhow::anyhow!("Window size is not valid"))?
+            .to_physical::<u32>(1.0);
+        log::debug!(target: LOG_TARGET, "Window size: {window_size:?}");
+
+        let surface_resolution = match surface_capabilities.current_extent.width {
+            u32::MAX => vk::Extent2D {
+                width: window_size.width,
+                height: window_size.height,
+            },
+            _ => surface_capabilities.current_extent,
+        };
+        log::debug!(target: LOG_TARGET, "Surface resolution: {surface_resolution:?}");
+
+        let pre_transform = if surface_capabilities
+            .supported_transforms
+            .contains(vk::SurfaceTransformFlagsKHR::IDENTITY)
+        {
+            vk::SurfaceTransformFlagsKHR::IDENTITY
+        } else {
+            surface_capabilities.current_transform
+        };
+
+        let present_modes = self
+            .get_physical_device_surface_present_modes(physical_device)?;
+
+        let present_mode = present_modes
+            .iter()
+            .cloned()
+            .find(|&mode| mode == vk::PresentModeKHR::MAILBOX)
+            .unwrap_or(vk::PresentModeKHR::FIFO);
+        let swapchain_loader = ash::khr::swapchain::Device::new(&instance.handle, &device.handle);
+
+        let swapchain_create_info = vk::SwapchainCreateInfoKHR::default()
+            .surface(self.surface)
+            .min_image_count(desired_image_count)
+            .image_color_space(surface_format.color_space)
+            .image_format(surface_format.format)
+            .image_extent(surface_resolution)
+            .image_usage(vk::ImageUsageFlags::COLOR_ATTACHMENT)
+            .image_sharing_mode(vk::SharingMode::EXCLUSIVE)
+            .pre_transform(pre_transform)
+            .composite_alpha(vk::CompositeAlphaFlagsKHR::OPAQUE)
+            .present_mode(present_mode)
+            .clipped(true)
+            .image_array_layers(1);
+        log::debug!(target: LOG_TARGET, "Swapchain info: {swapchain_create_info:#?}");
+
+        let swapchain = unsafe {
+            swapchain_loader.create_swapchain(&swapchain_create_info, None)?
+        };
+        log::debug!(target: LOG_TARGET, "Swapchain created");
+
+        Ok(VkSwapchain::new(
+            swapchain_loader,
+            Some(swapchain)
+        ))
+    }
 }
 
 impl Drop for VkSurface {

src/vulkan/vk_swapchain.rs

@@ -0,0 +1,28 @@
+use ash::vk;
+
+pub struct VkSwapchain {
+    swapchain_loader: ash::khr::swapchain::Device,
+    swapchain: Option<vk::SwapchainKHR>,
+}
+
+impl VkSwapchain {
+    pub fn new(
+        swapchain_loader: ash::khr::swapchain::Device,
+        swapchain: Option<vk::SwapchainKHR>,
+    ) -> Self {
+        Self {
+            swapchain_loader,
+            swapchain
+        }
+    }
+}
+
+impl Drop for VkSwapchain {
+    fn drop(&mut self) {
+        if let Some(swapchain) = self.swapchain {
+            unsafe {
+                self.swapchain_loader.destroy_swapchain(swapchain, None);
+            }
+        }
+    }
+}