G-buffer aliasing problems?

[RichardBlank]

I have aliasing problems when I am render g-buffer chanels. When I put all the passes to gather I get very bad aliasing. The picture does not look as good as the RGB render.

I'm in a project right now and we really need to be able to tweek the rendering as much as possible.

Do anyone have a good workflow for this, without having to render six separete passes (we dont have time enough... as usual

I would appreciate ANY good workflows for vray, even if I have to render some separate passes

/Richard

[panthon]

Are u talking about gbuffers embedded into rpf files (material id, render id, coverage and so on) or gbuffers like shadow pass, reflection pass, refraction etc, which render separately?

[RichardBlank]

Not the embedded ones in RPF.

To render the passes sepatately is when you render each pass separately and tweek the materials and lighting to get shadow, specular, difuse, ambient occlusion etc...

So what I was asking about. Do anyone have a good workflow to eliminate as much of those passes as possibly? Since the, for example, shadow g-buffer dont get propper antialiasing...

...or am I missunderstanding something?

[panthon]

I don´t know if i´m understanding you, but here u are.

You don´t need to tweak your materials to get your render passes. Just turn on the vray frame buffer and tick "save separate gbuffer channels" and select a file name.
Then go to gbuffer/color mapping and activate the channels u want vray to render.
This way you only render once. And i don´t usually need the shadow pass, because u can get the same effect combining the gi and the direct lighting pass with the diffuse one.
However, take a look at this reference on how to composite them:

http://www.spot3d.com/vray/help/VRay...buffer.htm#ex2

[RichardBlank]

Yes this is the way I want to work. But this gbuffer doesent seam to get the right AA?

Do you know what I'm talking about?

[panthon]

As far as i´m concerned the only two channels that aren´t antialiased are real rgb colors and shadow pass.

I usually only need this structure for photoshop:

DOwn there: GI pass (not raw) Blending: normal
A level up: Lighting pass - Blending: multiply
A level up: Reflections - Blending: Linear dodge
A level up Refractions - Blending: linear dodge.

You could need more channels, but in that reference u will find how to add them.