[OLPC-Games] Pygame

Bert Freudenberg bert at freudenbergs.de
Mon May 14 11:12:17 EDT 2007


I meant Xephyr, sorry. The X-in-X server that is used by the OLPC dev  
environment.

- Bert -

On May 14, 2007, at 17:06 , Julius B. Lucks wrote:

> What is Zephyr?  SJ was telling me about this mode of development  
> with Etoys, and it sounds ideal to set something like that up for  
> pygame developers as well.
>
> Julius
>
> -----------------------------------------------------
> http://openwetware.org/wiki/User:Lucks
> -----------------------------------------------------
>
>
> On May 14, 2007, at 10:33 AM, Bert Freudenberg wrote:
>
>> Yes, they explain the Anti-aliasing quite nicely.
>>
>> It would be way cool if someone would hack Zephyr to scale the
>> display. We have this for Squeak/Etoys and it allows you to develop
>> using a 1200x900 frame buffer in a window with a physical size that
>> matches the XO. Immensely useful.
>>
>> - Bert -
>>
>> On May 14, 2007, at 15:56 , Jonathan Blocksom wrote:
>>
>>> I've found the picturse on the wiki page
>>> http://wiki.laptop.org/go/GTK_for_OLPC
>>> to be instructive as well.
>>>
>>> This is something of a FAQ, it would be great if this info were a
>>> little more consolidated.
>>>
>>> On 5/14/07, Bert Freudenberg <bert at freudenbergs.de> wrote:
>>>>
>>>> On May 14, 2007, at 5:43 , Kent Quirk wrote:
>>>>
>>>>> Greg Ewing wrote:
>>>>>> Bert Freudenberg wrote:
>>>>>>> On May 13, 2007, at 6:35 , Kent Quirk wrote:
>>>>>>>> The full screen black and white resolution of the XO is
>>>>>>>> 1200x900, the color resolution is effectively lower
>>>>>>> The frame buffer resolution is fixed at 1200x900, period.  
>>>>>>> Even in
>>>>>>> color mode.
>>>>>> So what does "effectively lower" mean? Is it something like the
>>>>>> Apple ][ where certain pixels could only be certain colours?
>>>>> Something like that. Basically, each grayscale pixel lights up a
>>>>> single color, so in order to display arbitrary colors, it's
>>>>> necessary to blur the image and draw at a lower resolution. But  
>>>>> all
>>>>> that happens in the hardware.
>>>>>
>>>>> It's a bit hard to explain the effect, but the best I've seen  
>>>>> is on
>>>>> wikipedia:
>>>>>
>>>>> http://en.wikipedia.org/wiki/$100_laptop
>>>>
>>>> Or try this simulation:
>>>>
>>>> http://croquetweak.blogspot.com/2007/03/interactive-olpc-xo- 
>>>> display-
>>>> simulation.html
>>>>
>>>> I should update that with the anti-aliasing code I have laying
>>>> around ...
>>>>
>>>> - Bert -
>>>>






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