You can use the stencilbuffer to do that.
Google knows everything:
Visualizing overdraw via stencil in OpenGL:
http://www.excamera.com/articles/2/index.html
/Anders
On 4/18/07, Ovidiu Sabou <[EMAIL PROTECTED]> wrote:
I mean overdraw as in the fillrate killer. I want to visualize how many
triangles are rasterized for each pixel.
It can be done by enabling blending and drawing with a dark color but I was
hoping for some magic(I think this would be a very useful tool for performance
analysis) :)
Ovidiu
On 4/18/07, Gordon Tomlinson <[EMAIL PROTECTED]> wrote:
>
>
>
> HI
>
> Depends on what you mean by overdraw, but for starts look at osgHud and
examples this overlay many elements etc...
>
>
>
>
>
>
> __________________________________________________________
> Gordon Tomlinson
>
> Email : [EMAIL PROTECTED]
> Website : www.vis-sim.com www.gordontomlinson.com
>
> __________________________________________________________
>
> "Self defence is not a function of learning tricks
> but is a function of how quickly and intensely one
> can arouse one's instinct for survival"
> -Master Tambo Tetsura
>
>
>
>
> ________________________________
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ovidiu
Sabou
> Sent: 18 April 2007 11:51
> To: osg users
> Subject: [osg-users] overdraw
>
> Hi everyone!
>
> Do you know an easy way to visualize overdraw for a scene ?
>
>
> Ovidiu
>
>
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://openscenegraph.net/mailman/listinfo/osg-users
> http://www.openscenegraph.org/
>
_______________________________________________
osg-users mailing list
[email protected]
http://openscenegraph.net/mailman/listinfo/osg-users
http://www.openscenegraph.org/
--
________________________________________________________________
Anders Backman Email: [EMAIL PROTECTED]
HPC2N/VRlab Phone: +46 (0)90-786 9936
Umea university Cellular: +46 (0)70-392 64 67
S-901 87 UMEA SWEDEN Fax: +46 90-786 6126
http://www.cs.umu.se/~andersb
_______________________________________________
osg-users mailing list
[email protected]
http://openscenegraph.net/mailman/listinfo/osg-users
http://www.openscenegraph.org/
