[Jprogramming] opengl on MAC OS X

[Mike Powell]

This iMac has an ATI Radeon HD 2600 Pro graphics card.

On 2-May-08, at 8:26 AM, Oleg Kobchenko wrote:

> See what graphics card is in your Macs
> where the distortions are. There is a good chance
> they are Intel integrated graphics cards.
>
> You may want to see if it is possible to change
> the 3D settings of the graphics card.
>
> Also you could try to identify what particular
> OpenGL features cause the problem and see if there
> are alternatives.
>
> --- On Fri, 5/2/08, Mike Powell <mikepowell at shaw.ca> wrote:
>
>> I too see something strange.
>>
>> The first thing is that the OpenGL demo on my PC (which is
>> XP Home
>> running under Parallels on my Mac) offers a first window
>> with all
>> sorts of alternatives to try out. On my Mac (which is OS
>> 10.5.2) I go
>> straight into the rotating coloured object. Looks as if the
>> versions
>> are different.
>>
>> On my PC the demo works as you'd expect. On my Mac,
>> there seems to be
>> an intermittent problem with a closer face hiding a more
>> distant face.
>> Thus you sometimes get a look-through effect with objects
>> rotating in
>> the wrong direction. Very confusing to the eye.
>>
>> My Mac Java version is also 1.5.0_13.
>>
>> Mike
>>
>> On 2-May-08, at 12:22 AM, Carl Jacobs wrote:
>>
>>> Brian,
>>>
>>> My java version is:
>>> java version "1.5.0_13"
>>> Java(TM) 2 Runtime Environment, Standard Edition
>> (build 1.5.0_13-
>>> b05-237)
>>> Java HotSpot(TM) Client VM (build 1.5.0_13-119, mixed
>> mode, sharing)
>>>
>>> I'm not even sure how I'd update it, as
>> I'm quite new to Mac.
>>> Although it would seem that I'm not too far out of
>> sync.
>>>
>>> I guess the font limitation serves me right for not
>> looking at the
>>> source!
>>>
>>> I'm not sure how to describe what I see with
>> lookat, so I've
>>> attached a screen grab. This is the image that
>> displays on startup.
>>> Rotating the image (x,y,z keys), results in other
>> strange
>>> variations. It sort of feels like an inverted
>> perspective, which is
>>> being affected by a clipping plane. When I rotate the
>> cube to look
>>> at the back three faces (cyan, magenta, yellow), then
>> it all looks
>>> fine! I've done a source compare with my Windows
>> box, and the source
>>> looks the same. I tried swapping the order of some of
>> the vertices
>>> (from clockwise to counter-clockwise), thinking that
>> maybe it was
>>> being affected by the normals, but that also
>> didn't help.
>>>
>>> Regards,
>>> Carl.
>>>
>>>> Carl,
>>>>
>>>> On my Mac running 10.4.11 the lookat demo seems to
>>>> look all right.  What java version Are you
>> running?
>>>>
>>>> java -version
>>>> java version "1.5.0_13"
>>>> Java(TM) 2 Runtime Environment, Standard Edition
>> (build 1.5.0_13-
>>>> b05-241)
>>>> Java HotSpot(TM) Client VM (build 1.5.0_13-121,
>> mixed mode, sharing)
>>>>
>>>> The font demos run only on Windows boxes. View the
>>>> script for font and you will see the following.
>>>>
>>>> NB. note glaUseFontBitmaps supported in Windows
>> only
>
>
>
>       
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