Hi there.
I get an assertion failure while programmatically resizing a window:
Assertion failed: (r->shape != NULL), function assert_check_region, file
Regions/CGRegion.c, line 28.
Anyone has any idea what might be wrong and what I can do about it?
I'll explain in more detail what I am doing here.
I have a somewhat intricate window and layer layout and I'm programmatically
resizing the window according to user input. In effect I'm rotating the
contents of the (borderless) window while resizing the window to fit the
contents.
This actually works fine *most* of the time. I.e. I'm usually able to rotate
the contents by 360 degrees several times before I hit the assertion above.
The last thing I'm calling is
[self.window setFrame:newWindowFrame display:YES];
The newWindowFrame looks perfectly normal.
As for the stack trace, the last entry in the side bar is
-[NSWindow _setFrameCommon:display:stackSize:]
There's more in the popup in the debugger toolbar; does anyone know how to copy
that? Anyway, I made a screenshot.
Here are *some* of the more interesting entries:
-[NSWindow _setFrameCommon:display:stackSize:]
...
-[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:]
-[NSView _drawRect:clip:]
CAViewDraw
view_draw(_CAView*, double, CVTimeStamp const*, bool)
...
some CA::OGL:: calls
...
-[CIContext measureRequirementsOf:query::results:]
...
some FETreeContext and FETreeNode calls
...
FEAffineTreeNode::refactorTransforms_2(FETreeContext*, unsigned int, signed
char&)
FEMultiSourceTreeNode::copyCustomDataFrom(FETreeContext*,
FEMultiSourceTreeNode const*, unsigned int, CGAffineTransform const&]
FEAffineTreeNode::updateDOD(FETreeContext*)
CGSGetRegionBounds
CGRegionGetBoundingBox
assert_check_region
So ... something to do with some affine transform? Yes, I'm using affine
transforms to rotate the window contents, which is located in a CALayer.
I really hope someone has an idea what could be going wrong here because I'm
kind of stumped right now.
Andreas
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