minor adjustments for windows

src/GLWidget.cpp

@@ -38,7 +38,6 @@ void GLWidget::initializeGL() {
 	glEnable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
 	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 	glDepthFunc(GL_LESS);
-	glClearDepth(1);
 	glClearColor(.15, .15, .15, 1);
 
 	simulation->semaphore.acquire();

src/Overlay.cpp

@@ -65,7 +65,6 @@ void Overlay::draw() {
 		hud.fill(Qt::transparent);
 
 		QPainter p(&hud);
-		p.setRenderHints(QPainter::Antialiasing);
 		p.setPen(Qt::white);
 		auto font = p.font();
 		font.setPixelSize(15);
@@ -139,7 +138,6 @@ void Overlay::draw() {
 		hud.fill(Qt::transparent);
 
 		QPainter p(&hud);
-		p.setRenderHints(QPainter::Antialiasing);
 
 		// FPS
 		{