"Replace Rendered Image with Glare Only" setting in Vray

[rad_thundercat]

Hi,

 

How do I save out just the glare pass from the frame buffer? In Mental Ray's glare shader, there is a checkbox for "Replace Rendered Image with Glare Only". I'm looking for an equivalent in Vray. I've played around with all the settings in the Lens Effect dialog, but get nothing. What am I missing?

 

Thanks!

[Corey Beaulieu]

In the Vray Frame Buffer just scroll down to the Glare Element and then click the save button. It should be that simple.

[rad_thundercat]

I'm selecting "glare" from the frame buffer pulldown and saving it. The image has the glare composited onto the beauty. How can I get only the glare?

[Corey Beaulieu]

That's odd.

 

I guess you can just use that with the RGB pass and set one to difference mode in Photoshop. Collapse that and save it as your glare only.

 

Not ideal, but if you can't get it another way.

[rad_thundercat]

So is there no way to properly save out just the glare/bloom without the beauty baked in with Vray?

[rad_thundercat]

Anyone?

[rad_thundercat]

This is the result from the differencing method. http://i.imgur.com/XysMV7H.jpg

 

How can I get a clean pass?

[Scott Schroeder]

You can't just get a glare pass, at least not yet anyways. Grant answered your question on the Chaos Group forums.

 

If noise is an issue, it's probably in your render settings and you don't have a very clean beauty pass to begin with. Doing this method is only enhancing the visible noise.

[rad_thundercat]

well that's disappointing

[Scott Schroeder]

I think the intention of the vray lens effects was for out of the box rendering with only slight adjustments if any in post.