Re: Question on transparent camera transformed objects.

[Peter M. <Pet...@mi...>]

On 28 Sep 2004, at 18:52, James W. Walker wrote:

> Peter Michelsen <Pet...@mi...> wrote:
>
>> I tried this but it had no effect as the objects are
>> transparent..... and I guess ( from testing ) use the last style
>> illumination style set in the submit loop. ( does this sound right
>> or am I way of base? ).
>
> That seems right.  Quesa saves the illumination style with each 
> transparent primitive, but only uses it to decide whether to use 
> specular highlights.  That is, it distinguishes Phong and Lambert 
> illumination from each other, but does not consider NULL illumination. 
>  This should probably be filed as a bug, if it hasn't been already.
>

Shall I write the bug report?

> What platform(s) are you targeting?  If all you need is Mac OS X, then 
> I would suggest not doing the selection stuff inside Quesa, but using 
> a transparent overlay window.  That way, the Quesa content does not 
> need to be re-rendered as the selection rectangle changes.
> -- 

This is the way we used to draw the rectangle but by using Quesa 
directly  we are able to get about 10 - 25 times more speed depending 
on the video card.

Peter.


>   James W. Walker, ScriptPerfection Enterprises, Inc.
>   <http://www.write-brain.com/>
>
>
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