Refactor vk_swapchain

src/vulkan/vk_render_context.rs

@@ -5,7 +5,7 @@ pub struct VkRenderContext {
     instance: VkInstance,
     surface: VkSurface,
     device: VkDevice,
-    swapchain: VkSwapchain
+    swapchain: VkSwapchain,
 }
 
 impl VkRenderContext {
@@ -28,11 +28,11 @@ impl VkRenderContext {
         let device = VkDevice::new_graphics_device(&instance, &physical_device, queue_family_index)
             .expect("Unable to create device");
 
-        let swapchain = surface.create_swapchain(
+        let mut swapchain = surface.create_swapchain(
             &window,
             &instance,
             &device,
-            &physical_device
+            &physical_device,
         ).expect("Unable to create swapchain");
 
         // let present_queue = device.get_device_queue(0);
@@ -41,7 +41,7 @@ impl VkRenderContext {
             instance,
             surface,
             device,
-            swapchain
+            swapchain,
         })
     }
 }

src/vulkan/vk_surface.rs

@@ -1,11 +1,11 @@
+use crate::display::Window;
 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,
-    surface: vk::SurfaceKHR,
+    pub(super) surface: vk::SurfaceKHR,
 }
 
 impl VkSurface {
@@ -68,7 +68,9 @@ impl VkSurface {
         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()
+        let surface_format = surface_formats
+            .first()
+            .and_then(|f| Some(*f))
             .ok_or_else(|| anyhow::anyhow!("No available surface formats"))?;
         log::debug!(target: LOG_TARGET, "Selected surface format: {surface_format:?}");
 
@@ -116,30 +118,18 @@ impl VkSurface {
             .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(
+        let mut swapchain = VkSwapchain::new(
             swapchain_loader,
-            Some(swapchain)
-        ))
+            desired_image_count,
+            surface_format,
+            surface_resolution,
+            present_mode,
+            pre_transform,
+        );
+
+        swapchain.create_swapchain(&self)?;
+
+        Ok(swapchain)
     }
 }
 

src/vulkan/vk_swapchain.rs

@@ -1,20 +1,63 @@
+use crate::vulkan::{VkSurface, LOG_TARGET};
+use ash::prelude::VkResult;
 use ash::vk;
+use ash::vk::{Extent2D, PresentModeKHR, SurfaceFormatKHR, SurfaceTransformFlagsKHR, SwapchainKHR};
 
 pub struct VkSwapchain {
     swapchain_loader: ash::khr::swapchain::Device,
     swapchain: Option<vk::SwapchainKHR>,
+
+    desired_image_count: u32,
+    surface_format: SurfaceFormatKHR,
+    surface_resolution: Extent2D,
+    present_mode: PresentModeKHR,
+    pre_transform: SurfaceTransformFlagsKHR,
 }
 
 impl VkSwapchain {
     pub fn new(
         swapchain_loader: ash::khr::swapchain::Device,
-        swapchain: Option<vk::SwapchainKHR>,
+        desired_image_count: u32,
+        surface_format: SurfaceFormatKHR,
+        surface_resolution: Extent2D,
+        present_mode: PresentModeKHR,
+        pre_transform: SurfaceTransformFlagsKHR,
     ) -> Self {
         Self {
             swapchain_loader,
-            swapchain
+            desired_image_count,
+            surface_format,
+            surface_resolution,
+            present_mode,
+            pre_transform,
+            swapchain: None,
         }
     }
+
+    pub fn create_swapchain(&mut self, surface: &VkSurface) -> VkResult<()> {
+        let swapchain_create_info = vk::SwapchainCreateInfoKHR::default()
+            .surface(surface.surface)
+            .min_image_count(self.desired_image_count)
+            .image_color_space(self.surface_format.color_space)
+            .image_format(self.surface_format.format)
+            .image_extent(self.surface_resolution)
+            .image_usage(vk::ImageUsageFlags::COLOR_ATTACHMENT)
+            .image_sharing_mode(vk::SharingMode::EXCLUSIVE)
+            .pre_transform(self.pre_transform)
+            .composite_alpha(vk::CompositeAlphaFlagsKHR::OPAQUE)
+            .present_mode(self.present_mode)
+            .clipped(true)
+            .image_array_layers(1);
+
+        let swapchain = unsafe {
+            self.swapchain_loader.create_swapchain(&swapchain_create_info, None)?
+        };
+        log::debug!(target: LOG_TARGET, "Swapchain created : {swapchain_create_info:#?}");
+
+        self.swapchain = Some(swapchain);
+
+        Ok(())
+    }
 }
 
 impl Drop for VkSwapchain {