> See DisplayScreen class>>actualScreenSize... this returns the native 
> OS screen depth (if the primitive is implemented for that platform).

Oops, I meant DisplayScreen class>>actualScreenDepth of course.

- Doug


On Saturday, June 19, 2004, at 04:50 PM, Doug Way wrote:

>
> On Thursday, June 17, 2004, at 02:09 AM, Russell Penney wrote:
>
>> Can I suggest that it should really be made a primitive to decide at 
>> startup
>> the correct depth to start at? In fact I assumed that is what it did.
>>
>> The statement "very few people have their OS display depth set to 16
>> bits..." sounds a bit dodgy to me seeing Squeak is run on many 
>> different
>> systems and at least some are old equipment.
>>
>> Of course you need to do this quickly so how about the compromise of:
>>
>> SomeClass (not sure where)>>initialDisplayDepth
>>
>> 	<non-existent primitive>
>> 	^32
>>
>> That is used to load the preference unless its overridden.
>
> Actually, after poking around in DisplayScreen, it looks like this 
> primitive does exist.  (I remember it didn't exist in the early 
> days... I don't remember exactly when it was added.)
>
> See DisplayScreen class>>actualScreenSize... this returns the native 
> OS screen depth (if the primitive is implemented for that platform).
>
> We probably should just have the Squeak depth set to match the native 
> depth on startup.  However, I'm not sure about adding this at this 
> late date for 3.7, since it would be a new thing in the system 
> startup... we could wait for 3.8alpha and then try that.
>
> Maybe we should not bother making any display depth change for 3.7, 
> then.
>
> - Doug
>
>
>>
>>> -----Original Message-----
>>> From: squeak-dev-bounces at lists.squeakfoundation.org 
>>> [mailto:squeak-dev-
>>> bounces at lists.squeakfoundation.org] On Behalf Of Doug Way
>>> Sent: Thursday, 17 June 2004 2:58 PM
>>> To: The general-purpose Squeak developers list
>>> Subject: Re: Default UI preferences for 3.7
>>>
>>>
>>> On Wednesday, June 16, 2004, at 09:05 PM, Raymond Asselin wrote:
>>>
>>>> Le 2004/06/16, Doug Way <dway at mailcan.com> écrivait :
>>>>
>>>> Hi Doug,  I think we should go with 32 bits for the display depth,
>>>> don't
>>>> you ?
>>>
>>> Good point, I'll add that one to the list.  Offhand, I'd say yes, we
>>> should switch to 32 bits.
>>>
>>> Pros:
>>> - Better rendering of colors, of course
>>> - Faster graphics performance for most, because most people will have
>>> their OS display depth set to 32 bits, and performance is usually 
>>> best
>>> when the Squeak depth matches the OS depth
>>>
>>> Cons:
>>> - For those who have their OS display depth set to 16 bits, Squeak
>>> might show up as a black screen if the Squeak depth is 32 bits. (I've
>>> seen this on some platforms, anyway.)  However, these days very few
>>> people have their OS display depth set to 16 bits...
>>>
>>> - Doug
>>>
>>
>>
>>
>>
>
>