[studio] Make clear screen before redraw

src/studio/applib/src/builtinmodules.hpp

@@ -1,11 +0,0 @@
-/*
- * Copyright 2016 - 2023 Gary Talent (gary@drinkingtea.net). All rights reserved.
- */
-
-#pragma once
-
-#include <studio/module.hpp>
-
-#include <ox/std/memory.hpp>
-
-extern ox::Vector<std::function<ox::UPtr<studio::Module>()>> BuiltinModules;

src/studio/applib/src/studioapp.cpp

@@ -5,10 +5,10 @@
 #include <imgui.h>
 
 #include <keel/media.hpp>
+#include <glutils/glutils.hpp>
 #include <turbine/turbine.hpp>
 
 #include <studio/configio.hpp>
-#include "builtinmodules.hpp"
 #include "clawviewer.hpp"
 #include "filedialogmanager.hpp"
 #include "studioapp.hpp"
@@ -119,6 +119,7 @@ void StudioUI::handleKeyEvent(turbine::Key key, bool down) noexcept {
 }
 
 void StudioUI::draw() noexcept {
+	glutils::clearScreen();
 	drawMenu();
 	drawTabBar();
 	if (m_showProjectExplorer) {