From ee98482b44fc9ce9123447ec5b08e8f9f5d44854 Mon Sep 17 00:00:00 2001
From: Brecht Van Lommel <brecht@blender.org>
Date: Wed, 6 Mar 2024 17:46:08 +0100
Subject: [PATCH] Fix #119058: Crash with OpenGL render and 3D viewport lock
 rotation

---
 source/blender/editors/render/render_opengl.cc | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/source/blender/editors/render/render_opengl.cc b/source/blender/editors/render/render_opengl.cc
index 5b439f65d91..443a3530b90 100644
--- a/source/blender/editors/render/render_opengl.cc
+++ b/source/blender/editors/render/render_opengl.cc
@@ -792,8 +792,12 @@ static bool screen_opengl_render_init(bContext *C, wmOperator *op)
   oglrender->prevar = prevar;
 
   if (is_view_context) {
-    /* so quad view renders camera */
-    ED_view3d_context_user_region(C, &oglrender->v3d, &oglrender->region);
+    /* Prefer rendering camera in quad view if possible. */
+    if (!ED_view3d_context_user_region(C, &oglrender->v3d, &oglrender->region)) {
+      /* If not get region activated by ED_view3d_context_activate earlier. */
+      oglrender->v3d = CTX_wm_view3d(C);
+      oglrender->region = CTX_wm_region(C);
+    }
 
     oglrender->rv3d = static_cast<RegionView3D *>(oglrender->region->regiondata);