Black Screen at high res output

[Micha_cg]

Hi,

some times I try to render high res images like 6000x4000 and get a black frame buffer. The limit isn't fixed, other times 10.000 pixels are possible. The RAM usage isn't so high, maybe around 2GB.
I ask me, how is determinated this limit? Graphic Card memory? I try to avoid the vrimage workflow.

Thanks,
Micha

[merlik585]

Re: Black Screen at high res output

Do you mean you don't get any render ?

Because the black screen I get sometime while calculating light cache,but if I do zoom in,it is there.
When the IR map start everything comes back to normal.

Renee

[dalomar_cg]

Re: Black Screen at high res output

Micha,

I think we've ran into this before...when vray "thinks" it may possibly run out of memory for a given render, then the frame buffer display tends to go haywire. This is vray trying to save what it can memory wise. This is typically in that odd zone thats stretching the limits of normal render, but not quite using enough memory to dictate vrimage usage. At the moment I don't know whether this is expected behavior or not. HTH

[Micha_cg]

Re: Black Screen at high res output

The black rendering is shown after the rendering is finished. Since enough RAM is available and not used, I would say, it's a bug or it can be improved.
If the graphic card is the limit, than it could be nice, to direct render to disk in standard image format.

Maybe it's something for Vlado.

Sidenote: could be nice, if the VfR installer install the vrimg tool allways and set some vrimage commands at the explorer context menu. I have done it a my machine - a general standard solution for all users could be nice.

[Micha_cg]

Re: Black Screen at high res output

I tested an other graphic card with different memory size -> same frame buffer size limit. So, the Vray engine seems to limit the direct output size here. :-\

[dalomar_cg]

Re: Black Screen at high res output

Thats weird...do you have the image set up to save on render completion? If yes, does it save an image or just black? There is no resolution limitation, just what your machine can handle. Is this a problem with one scene or with a number of them?

[dkendig]

Re: Black Screen at high res output

I agree that it's most likely not the graphics card at fault here, V-Ray doesn't use the graphics card for anything at all. We received your support ticket, and are waiting for an example scene file, to see if we can possibly track this down a little better.

[Micha_cg]

Re: Black Screen at high res output

How dou like to get an example file? Which adress?

[Micha_cg]

Re: Black Screen at high res output

I send it to Joe.

[dkendig]

Re: Black Screen at high res output

You should have received a response to your support ticket, all you should have to do is reply to the support ticket, and attach your file. If you send the scene to Joe, it just slows down the process, because he has to stop what he's doing, download the scene, attach it to the Fogbugz support case, and then assign the case to someone so they can take a look at the issue. If you've already sent the scene file to Joe, no worries, just try to avoid doing that in the future if ya can.

[Micha_cg]

Re: Black Screen at high res output

Very seldom I got an automatic responce for my bug reports. Only two times I got it, but all the other times, no confirmation of the receiving and no case number for sending example files.
For the black-frame-buffer-issue I got no support ticket responce too (but Joe wrote me as answer to my example file that he can repeat it and will ask Vlado).
Seem to be, the support system has a bug.

[dalomar_cg]

Re: Black Screen at high res output

Funny...my tickets always wind up sending my like 4-5 emails

[merlik585]

Re: Black Screen at high res output

LOL But you are BIG Damien !

[dkendig]

Re: Black Screen at high res output

If you send an email instead of filling out the form, then you're not using the bug tracking system as originally intended. If you send an email to Joe, you're not using the bug tracking system at all. I'll test it out with some dummy email addresses again, but you should always receive an auto response when you submit a new ticket. Thanks for the heads up about it, I'll see if I can find something that is preventing the auto responder from sending out a message.

[Micha_cg]

Re: Black Screen at high res output

If you send an email instead of filling out the form, then you're not using the bug tracking system as originally intended. If you send an email to Joe, you're not using the bug tracking system at all.

In the last weeks in havn't seen an autoresponce from the tracking system, so, an email to Joe is the only way I found. Can you check the outgoing emails of the tacking system?
Did you see my wish requests for motion blur and flytrough at the tracking system from today? In the last weeks I used the ASGvis reseller pages, because this pages are working at Opera. Maybe the tracking system of this pages dosn't work right. I would use the standard pages too, but since months this pages are not working at Opera.