From 6cfa9d41e816bfc67f89f149febe0671f9338a32 Mon Sep 17 00:00:00 2001
From: Max Schwarz <max.schwarz@ais.uni-bonn.de>
Date: Wed, 10 Feb 2021 12:19:58 +0100
Subject: [PATCH] GL: Add Context flag for disabling framebuffer initialization

---
 src/Magnum/GL/Context.cpp | 4 +++-
 src/Magnum/GL/Context.h   | 2 ++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Magnum/GL/Context.cpp b/src/Magnum/GL/Context.cpp
index f8b1ea138..50ed7612b 100644
--- a/src/Magnum/GL/Context.cpp
+++ b/src/Magnum/GL/Context.cpp
@@ -912,7 +912,9 @@ bool Context::tryCreate() {
 
     /* Initialize functionality based on current OpenGL version and extensions */
     /** @todo Get rid of these */
-    DefaultFramebuffer::initializeContextBasedFunctionality(*this);
+    if(!(_internalFlags & InternalFlag::NoFramebuffer))
+        DefaultFramebuffer::initializeContextBasedFunctionality(*this);
+
     Renderer::initializeContextBasedFunctionality();
 
     /* Enable GPU validation, if requested */
diff --git a/src/Magnum/GL/Context.h b/src/Magnum/GL/Context.h
index cc05e0371..c9e729813 100644
--- a/src/Magnum/GL/Context.h
+++ b/src/Magnum/GL/Context.h
@@ -747,6 +747,8 @@ class MAGNUM_GL_EXPORT Context {
             DisplayVerboseInitializationLog = DisplayInitializationLog|(1 << 1),
             GpuValidation = 1 << 2,
 
+            NoFramebuffer = 1 << 3,
+
             Default = DisplayInitializationLog
         };
         typedef Containers::EnumSet<InternalFlag> InternalFlags;