Hi,

On 14.09.2016, at 09:57, Bert Freudenberg <bert at freudenbergs.de> wrote:

> This hack avoids entering an unusable state. OTOH it makes debugging it more difficult. What to do?

Is the unstable state present in cocoa or carbon VMs?
Best regards
	-Tobias

> 
> - Bert -
> 
> On Tue, Sep 13, 2016 at 10:01 PM, <commits at source.squeak.org> wrote:
> Bert Freudenberg uploaded a new version of Graphics to project The Trunk:
> http://source.squeak.org/trunk/Graphics-bf.365.mcz
> 
> ==================== Summary ====================
> 
> Name: Graphics-bf.365
> Author: bf
> Time: 13 September 2016, 10:01:12.119134 pm
> UUID: 184228fa-4e38-472a-8e51-1cd86ff433f4
> Ancestors: Graphics-tfel.364
> 
> Work around Mac VM bug: use 32 bpp
> 
> =============== Diff against Graphics-tfel.364 ===============
> 
> Item was added:
> + ----- Method: DisplayScreen>>primSupportsDisplayDepth: (in category 'other') -----
> + primSupportsDisplayDepth: pixelDepth
> +       "Return true if this pixel depth is supported on the current host platform.
> +       Primitive. Optional."
> +       <primitive: 91>
> +       ^#(1 2 4 8 16 32) includes: pixelDepth!
> 
> Item was changed:
>   ----- Method: DisplayScreen>>supportsDisplayDepth: (in category 'other') -----
>   supportsDisplayDepth: pixelDepth
> +       "Return true if this pixel depth is supported on the current host platform."
> +       Smalltalk platformName = 'Mac OS' ifTrue: [^pixelDepth abs = 32]. "Work around VM bug"
> +       ^self primSupportsDisplayDepth: pixelDepth!
> -       "Return true if this pixel depth is supported on the current host platform.
> -       Primitive. Optional."
> -       <primitive: 91>
> -       ^#(1 2 4 8 16 32) includes: pixelDepth!
> 
> 
> 
>