Re: How Would You Visualize DOF in GL?

Date : Sat, 1 Mar 2008 16:14:37 -0800
To : XSI(at)Softimage.COM
From : "Thiago Costa" <thiagocosta3d(at)gmail.com>
Subject : Re: How Would You Visualize DOF in GL?
3dsmax has something like that too... and a Motionblur too... But it's slow as hell specially with AA on.
Its like Pingo said... it capture an offset of the camera (or frames for mb), and blend them into a single frame. It could probably be done via scripting in XSI but if you do in the same way it would endup as slow as 3dsmax...

Maybe you could find a way through a realtime shader (this would be really fast)... I see that nVidia has a few examples for download.. maybe you can put it to run in XSI.
I have no idea how to make a realtime shader run in XSI... maybe someone on the list knows how to start.

http://http.download.nvidia.com/developer/SDK/Individual_Samples/samples.html#HLSL_DepthOfField

This is a nice topic to discuss :)

Cheers

Thiago

On 01/03/2008, pingo van der brinkloev <xsilist(at)comxnet.dk> wrote:
Ok, I have no idea if this is uesful info or not.

I remember a button in lightwave that made a previz of dof in the viewport by slightly offsetting the camera randomly, say 20 times but still pointing at a target (focus point) and then blending the images.

Interesting subject

cheers

pingo

On 01/03/2008, at 19.21, Jeffrey Dates wrote:

heya,

So this keeps coming up during pre-vis.   How can a Pre-vis artist pre-vis
DOF in the viewport/GL Capture??

I am curious if this has really been discussed on the XSI side?

I've seen using the depth fog to attempt to do it.. but I feel it's just not
the right solution.

My thought would be ideally to have a way to have GL DOF..   sure it might
looks rough.. but it's for Pre-Vis purposes.  I mean Flash can do it. Games
can do it.. seems like those approaches might have a way to applying to our
GL viewports?

Just curious if this has been done very well?  Or if there are any thoughts
on this...

thanks,

Jeffrey Dates
www.massmarket.tv



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