fix queue-submit-snyc validation

Author: TheNumbat

rvk/rvk.cpp

@@ -364,7 +364,7 @@ void Vk::end_frame(Image_View& output) {
         // Wait for frame available before running the submit; signal frame complete on finish
         frame.wait(Sem_Ref{frame.available, VK_PIPELINE_STAGE_2_COLOR_ATTACHMENT_OUTPUT_BIT});
 
-        auto signal = Sem_Ref{frame.complete, VK_PIPELINE_STAGE_2_BOTTOM_OF_PIPE_BIT};
+        auto signal = Sem_Ref{frame.complete, VK_PIPELINE_STAGE_2_COLOR_ATTACHMENT_OUTPUT_BIT};
         device->submit(frame.cmds, 0, Slice{&signal, 1}, frame.waits(), frame.fence);
 
         frame.clear();
@@ -471,6 +471,10 @@ void shutdown() {
     info("[rvk] Completed shutdown.");
 }
 
+void wait_idle() {
+    impl::singleton->wait_idle();
+}
+
 void reset_imgui() {
     impl::singleton->wait_idle();
     impl::singleton->destroy_imgui();

rvk/rvk.h

@@ -41,6 +41,7 @@ struct Config {
 bool startup(Config config);
 void shutdown();
 void reset_imgui();
+void wait_idle();
 
 // Info