Refactor vk_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 {