Expose raw handles

wgpu-hal/src/vulkan/adapter.rs

@@ -129,6 +129,10 @@ pub struct PhysicalDeviceFeatures {
 }
 
 impl PhysicalDeviceFeatures {
+    pub fn get_core(&self) -> vk::PhysicalDeviceFeatures {
+        self.core
+    }
+
     /// Add the members of `self` into `info.enabled_features` and its `p_next` chain.
     pub fn add_to_device_create<'a>(
         &'a mut self,
@@ -1859,6 +1863,10 @@ impl super::Adapter {
         self.raw
     }
 
+    pub fn get_physical_device_features(&self) -> &PhysicalDeviceFeatures {
+        &self.phd_features
+    }
+
     pub fn physical_device_capabilities(&self) -> &PhysicalDeviceProperties {
         &self.phd_capabilities
     }

wgpu-hal/src/vulkan/mod.rs

@@ -462,6 +462,10 @@ pub struct Surface {
 }
 
 impl Surface {
+    pub unsafe fn raw_handle(&self) -> vk::SurfaceKHR {
+        self.raw
+    }
+
     /// Get the raw Vulkan swapchain associated with this surface.
     ///
     /// Returns [`None`] if the surface is not configured.