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Add fix and doc for Mac OpenGL crash

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CURA-4726
This commit is contained in:
Lipu Fei 2017-12-21 15:42:48 +01:00
parent 84a24a582c
commit df1d3bf569
2 changed files with 42 additions and 0 deletions
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22
plugins/XRayView/XRayView.py
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@ -2,10 +2,13 @@
# Cura is released under the terms of the LGPLv3 or higher.
import os.path
from PyQt5.QtGui import QOpenGLContext
from UM.Application import Application
from UM.Logger import Logger
from UM.Math.Color import Color
from UM.PluginRegistry import PluginRegistry
from UM.Platform import Platform
from UM.Event import Event
from UM.View.View import View
from UM.Scene.Iterator.BreadthFirstIterator import BreadthFirstIterator
@ -13,6 +16,8 @@ from UM.Scene.Iterator.BreadthFirstIterator import BreadthFirstIterator
from UM.View.RenderBatch import RenderBatch
from UM.View.GL.OpenGL import OpenGL
from cura.CuraApplication import CuraApplication
from . import XRayPass
## View used to display a see-through version of objects with errors highlighted.
@ -52,6 +57,23 @@ class XRayView(View):
def event(self, event):
if event.type == Event.ViewActivateEvent:
# FIX: on Max OS X, somehow QOpenGLContext.currentContext() can become None during View switching.
# This can happen when you do the following steps:
# 1. Start Cura
# 2. Load a model
# 3. Switch to Custom mode
# 4. Select the model and click on the per-object tool icon
# 5. Switch view to Layer view or X-Ray
# 6. Cura will very likely crash
# It seems to be a timing issue that the currentContext can somehow be empty, but I have no clue why.
# This fix tries to reschedule the view changing event call on the Qt thread again if the current OpenGL
# context is None.
if Platform.isOSX():
if QOpenGLContext.currentContext() is None:
Logger.log("d", "current context of OpenGL is empty on Mac OS X, will try to create shaders later")
CuraApplication.getInstance().callLater(lambda e = event: self.event(e))
return
if not self._xray_pass:
# Currently the RenderPass constructor requires a size > 0
# This should be fixed in RenderPass's constructor.