Re: Quesa - offscreen draw context panes

[Dair G. <da...@re...>]

James W. Walker wrote:

>That's a possibility.  I suppose Quesa should at least post a warning=20
>if the OpenGL viewport limit is being exceeded.

Hi guys,

Sorry - I missed these messages go past, as they've been sent to
quesa-cvs rather than quesa-develop? I have a rule to flag things in
quesa-cvs as read automatically (as it's normally just cvs notifications
that go in there: that list doesn't get archived either BTW, so it can't
be searched).

If there's an enum we can query to figure out what the limits are
(perhaps GL_MAX_VIEWPORT_DIMS?), posting a warning sounds like a good
idea to me.


>>> Or will I have to wait for the OpenGL guys to fix their bug?
>>
>> I filed an enhancement request in Apple's bug database requesting a=20
>> bigger viewport limit in the OpenGL software renderer.  Why don't you=20
>> do that too?  More bug reports might raise the priority.
>
>Maybe, or would it be better to file it with the OpenGL people=20
>directly. Apple tend to fob us off suggesting its open source and
>if we want it fixed we should fix it ourselves.

Although there's a couple of open source implementations of OpenGL (Mesa
is GPL, and I believe SGI have put out a "reference implementation"
under their own licence as well), Apple's implementation is separate.

If filing a bug doesn't do anything, perhaps we should think about
handling this in Quesa itself?

This wouldn't need to happen at the renderer level, as a renderer could
return some "these are the max coords I can render to" values and the
library could then do the tiling on top using multiple passes?


-dair
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