Re: [E-devel] Can anything use OpenGL to render pixmaps?

[<ra...@ra...>]

On Wed, 22 Aug 2001 12:13:22 -0400 Dan Dennedy <da...@de...> babbled
profusely:

> 
> The section "The Rendering Engines" of the Evas docs clearly states 3D 
> hardware cannot render to pixmaps. Theoretically, it should be possible 
> because I am aware of a Windows web server component that renders graphs 
> using hardware-assisted OpenGL: 
> http://www.dundas.com/products/chart/index.asp?Content=3Doverview.htm

it's not possible because theonly way you can render to a "pixmap" is if you
create a  GLXPixmap (using the glx extension that lets you hook gl and x
together) - also this results in - lats i checked, server crashes... and all the
gl implimentations i know of drop back to softwarerendering for rendeirng to
glxpixmaps.. so no you can't use pixmaps - you have to use glxpixmaps (they are
different data structures and different primitives) :) basically its much easeir
to just rule it out entirely. if you want to render soemwhere that is a pixmap -
use the software engine - its infintiely faster than gl in software anyway... or
render to an imlib image - you get to keep 32bpp ANd get to keep the destination
alpha channel too if you want.. :)

> Perhaps, it is not possible due to a limitation in the way DRI is designed?
> 
> +-DRD-+
> Please make sure replies address me directly; I am not subscribed.
> 
> 
> 
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