Fix T46903: Missing Render Border Menu items

While other borders are more like a toggle, it is an intrinsic behavior
of those operators. Render Border is intrinsicly split into two operators
and trying to expose it as a toggle will end up with rather confusing
situation when shortcut listed in the menu changes depending on the
context.

release/scripts/startup/bl_ui/space_image.py

@@ -113,6 +113,11 @@ class IMAGE_MT_view(Menu):
         layout.separator()
 
         if show_render:
+            layout.operator("image.render_border")
+            layout.operator("image.clear_render_border")
+
+            layout.separator()
+
             layout.operator("image.cycle_render_slot", text="Render Slot Cycle Next")
             layout.operator("image.cycle_render_slot", text="Render Slot Cycle Previous").reverse = True
             layout.separator()

release/scripts/startup/bl_ui/space_view3d.py

@@ -438,6 +438,7 @@ class VIEW3D_MT_view(Menu):
         layout.operator("view3d.clip_border", text="Clipping Border...")
         layout.operator("view3d.zoom_border", text="Zoom Border...")
         layout.operator("view3d.render_border", text="Render Border...").camera_only = False
+        layout.operator("view3d.clear_render_border")
 
         layout.separator()
 

source/blender/editors/space_image/image_ops.c

@@ -3554,7 +3554,7 @@ static int clear_render_border_exec(bContext *C, wmOperator *UNUSED(op))
 void IMAGE_OT_clear_render_border(wmOperatorType *ot)
 {
 	/* identifiers */
-	ot->name = "Render Border";
+	ot->name = "Clear Render Border";
 	ot->description = "Clear the boundaries of the border render and disable border render";
 	ot->idname = "IMAGE_OT_clear_render_border";