Implement wgpuInstanceProcessEvents (#430)

* Implement wgpuInstanceProcessEvents

* Fix formatting

---------

Co-authored-by: Almar Klein <[email protected]>

Author: eliemichel

src/lib.rs

@@ -2692,6 +2692,19 @@ pub unsafe extern "C" fn wgpuInstanceCreateSurface(
     }))
 }
 
+#[no_mangle]
+pub unsafe extern "C" fn wgpuInstanceProcessEvents(instance: native::WGPUInstance) {
+    let instance = instance.as_ref().expect("invalid instance");
+    let context = &instance.context;
+
+    match context.poll_all_devices(false) {
+        Ok(_queue_empty) => (),
+        Err(cause) => {
+            handle_error_fatal(cause, "wgpuInstanceProcessEvents");
+        }
+    }
+}
+
 #[no_mangle]
 pub unsafe extern "C" fn wgpuInstanceRequestAdapter(
     instance: native::WGPUInstance,

src/unimplemented.rs

@@ -112,11 +112,6 @@ pub extern "C" fn wgpuInstanceHasWGSLLanguageFeature(
     unimplemented!();
 }
 
-#[no_mangle]
-pub extern "C" fn wgpuInstanceProcessEvents(_instance: native::WGPUInstance) {
-    unimplemented!();
-}
-
 #[no_mangle]
 pub extern "C" fn wgpuPipelineLayoutSetLabel(
     _pipeline_layout: native::WGPUPipelineLayout,