From 5c6e414a1562e8ab5b6411f4b6ac4bbd785a1d41 Mon Sep 17 00:00:00 2001
From: Attila Uygun <auygun@opera.com>
Date: Mon, 5 Jun 2023 23:25:05 +0200
Subject: [PATCH] Consume input events when switching between renderers

---
 src/demo/menu.cc     | 1 +
 src/engine/engine.cc | 4 ++++
 src/engine/engine.h  | 1 +
 3 files changed, 6 insertions(+)

diff --git a/src/demo/menu.cc b/src/demo/menu.cc
index 83f98cf..bd98337 100644
--- a/src/demo/menu.cc
+++ b/src/demo/menu.cc
@@ -201,6 +201,7 @@ bool Menu::Initialize() {
                                          : RendererType::kOpenGL);
         renderer_type_.SetEnabled(
             (Engine::Get().GetRendererType() == RendererType::kVulkan));
+        Engine::Get().ConsumeInputEvents();
       },
       true, Engine::Get().GetRendererType() == RendererType::kVulkan,
       kColorFadeOut, {Vector4f{1, 1, 1, 1}, Vector4f{1, 1, 1, 1}});
diff --git a/src/engine/engine.cc b/src/engine/engine.cc
index 3622287..3e8fc64 100644
--- a/src/engine/engine.cc
+++ b/src/engine/engine.cc
@@ -396,6 +396,10 @@ std::unique_ptr<InputEvent> Engine::GetNextInputEvent() {
   return event;
 }
 
+void Engine::ConsumeInputEvents() {
+  input_queue_.clear();
+}
+
 void Engine::StartRecording(const Json::Value& payload) {
   if (!replaying_ && !recording_) {
     recording_ = true;
diff --git a/src/engine/engine.h b/src/engine/engine.h
index bbbe77f..e1136de 100644
--- a/src/engine/engine.h
+++ b/src/engine/engine.h
@@ -84,6 +84,7 @@ class Engine : public PlatformObserver {
   void RemoveCustomShader(const std::string& asset_name);
 
   std::unique_ptr<InputEvent> GetNextInputEvent();
+  void ConsumeInputEvents();
 
   void StartRecording(const Json::Value& payload);
   void EndRecording(const std::string file_name);