From 21d84ee69282ca47a10bc51b6d27694cd6071276 Mon Sep 17 00:00:00 2001
From: Alibek Omarov <a1ba.omarov@gmail.com>
Date: Sat, 25 Apr 2026 02:59:12 +0500
Subject: [PATCH] ref: gl: add -glnoerr flag that enables no error context, for
 possible performance gains

---
 ref/gl/gl_opengl.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ref/gl/gl_opengl.c b/ref/gl/gl_opengl.c
index 70617e0f..4996d42c 100644
--- a/ref/gl/gl_opengl.c
+++ b/ref/gl/gl_opengl.c
@@ -1405,6 +1405,12 @@ void GL_SetupAttributes( int safegl )
 		glw_state.extended = true;
 	}
 
+	if( gEngfuncs.Sys_CheckParm( "-glnoerr" ))
+	{
+		gEngfuncs.Con_Reportf( "Creating a no-error GL context...\n" );
+		gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_NO_ERROR, 1 );
+	}
+
 	if( safegl > SAFE_DONTCARE )
 	{
 		safegl = -1; // can't retry anymore, can only shutdown engine