From: Chris Wood <[email protected]>
Subject: Re: single GLSL shader with multiple texture
To: "thomas pachoud" <[email protected]>
Cc: [email protected]
Date: Wednesday, 17 March, 2010, 10:06
Just to be clear, you can have one
shader applied to multiple objects
but it will apply the same texture/effect/whatever to every
object.
Fine if you want say lighting applied to everything, but
not if you
want separate textures.
One solution: give each object a unique colour, and use the
colour to
select a texture from an array by index.
Chris
On 17 March 2010 09:51, thomas pachoud <[email protected]>
wrote:
Hi,
not 100% sure, but I don't think you can use one
single GLSL for multiple
objects. You should use one GLSL applied to each
objects. In this way, each
objects will apply the same GLSL with his textures and
3D positionning and
lighting information. And if you need to act on full
scene, you should add
one GLSL at the end of your pipeline, playing on your
2D final rendering.
On Tue, Mar 16, 2010 at 9:35 AM, George Toledo <[email protected]>
wrote:
I may be wrong, but I don't believe that is
possible in QC. What you would
need to do is use a separate shader for each
object. GLSL in QC does support
multiple textures, but I don't think one can
assign them to arbitrary
objects in the scene.
I'm curious about this as well... I've
successfully used GLSL in QC to
send many different image sources to a shader, and
to use the shader to
crop, translate and dissolve, but that is in the
context of a 2D surface.
Is there a downside to putting each object in a
separate GLSL macro, and
using distinct textures for each in your scenario?
You can always connect
the join the lighting of each (or any other
parameter) with insert
splitters, so your multiple shaders can look
cohesive in the scene when you
move a light source (or whatever).
-George Toledo
On Mon, Mar 15, 2010 at 7:11 AM, luca palmili
<[email protected]>
wrote:
Hi to all,
my scene is composed by N objects (o1, o2...,
oN), each of them has got
one different texture (t1, t2, ..., tN). How
can I render all the objects in
a single GLSL shader? I mean: if I pass my N
texture as uniform parameters
to the GLSL shader, how can I tell to the GLSL
shader to use texture_1 for
object_1, texture_2 for object_2, etc...?
Thank you!
_______________________________________________
Do not post admin requests to the list. They
will be ignored.
Quartzcomposer-dev mailing list (Quartzcomposer-
[email protected])
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/quartzcomposer-dev/
gtoledo3%40gmail.com
This email sent to [email protected]
_______________________________________________
Do not post admin requests to the list. They will
be ignored.
Quartzcomposer-dev mailing list (Quartzcomposer-
[email protected])
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/quartzcomposer-dev/
thomas.pachoud%40gmail.com
This email sent to [email protected]
--
Thomas Pachoud
ingénieur multimédia IMAC
www.creapach.fr
_______________________________________________
Do not post admin requests to the list. They will be
ignored.
Quartzcomposer-dev mailing list (Quartzcomposer-
[email protected])
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/quartzcomposer-dev/psonice
%40gmail.com
This email sent to [email protected]
_______________________________________________
Do not post admin requests to the list. They will be
ignored.
Quartzcomposer-dev mailing list (Quartzcomposer-
[email protected])
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/quartzcomposer-dev/
the_voder%40yahoo.co.uk
This email sent to [email protected]
