vulkan: Move allocate to command pool

src/renderer/mod.rs

@@ -1 +1,7 @@
-pub mod vulkan;
+use ash::vk;
+
+pub mod vulkan;
+
+pub trait Renderable {
+    fn render(device: &vulkan::VkDevice, command_buffer: vk::CommandBuffer);
+}

src/renderer/vulkan/vk_command_pool.rs

@@ -27,6 +27,21 @@ impl VkCommandPool {
             handle: command_pool,
         })
     }
+
+    pub fn allocate_command_buffers_for_framebuffers(&self, framebuffers_count: u32) -> VkResult<Vec<vk::CommandBuffer>> {
+        let command_buffer_info = vk::CommandBufferAllocateInfo::default()
+            .command_pool(self.handle)
+            .level(vk::CommandBufferLevel::PRIMARY)
+            .command_buffer_count(framebuffers_count);
+
+        let command_buffers = unsafe {
+            self.device
+                .handle
+                .allocate_command_buffers(&command_buffer_info)?
+        };
+
+        Ok(command_buffers)
+    }
 }
 
 impl Drop for VkCommandPool {

src/renderer/vulkan/vk_render_context.rs

@@ -66,17 +66,9 @@ impl VkRenderContext {
 
         let command_pool = VkCommandPool::new(&device)?;
 
-        let command_buffer_info = vk::CommandBufferAllocateInfo::default()
-            .command_pool(command_pool.handle)
-            .level(vk::CommandBufferLevel::PRIMARY)
-            .command_buffer_count(framebuffers.len() as u32);
-
         // Destroyed with command pool
-        let command_buffers = unsafe {
+        let command_buffers = command_pool
-            device
+            .allocate_command_buffers_for_framebuffers(framebuffers.len() as u32)?;
-                .handle
-                .allocate_command_buffers(&command_buffer_info)?
-        };
 
         let image_available_semaphore = VkSemaphore::new(&device)?;
         let render_finished_semaphore = VkSemaphore::new(&device)?;