[X3D-Public] Shader programming and URLs in X3D

[Peter Eschler]

Hi,

On Wed, May 13, 2009 at 8:56 PM, John A. Stewart <alex.stewart at crc.ca> wrote:
> Hi All;
>
> I'm verifying the Shader support code in FreeWRL, and I have a question.
>
> The url field, can it contain the source, or does it always have to
> designate a file? eg, with scripting, one can have a url starting with
> "javascript ..." and it will be treated as source, not as a url.

InstantPlayer supports both approaches.
See the following example:
http://www.instantreality.org/tutorial/shader-programs/

Best regards,
Peter Eschler

> See 9.2.3 of 19775-1:2008 for "Scripting language protocols"
>
> So, what happens when the source of a shader is present in the X3D file? How
> do we determine if this is the source, or if it is to be treated as a
> url/urn?
>
> eg, can we have something like:
>        url " varying vec3 myvar; ..."
>
>
>
> I can't find any reference, but maybe I'm just not seeing the forest for the
> trees.
>
> Thanks;
>
> -----------------------------------------------------------
> John A. Stewart
> Team Leader: Networked Virtual Reality
> alex.stewart at crc.ca
>
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