hardware render and mental ray

# 1 27-03-2007 , 03:28 AM

Subscriber
Join Date: Sep 2005

Posts: 51

hello
I am wondering if it's possible to render the particle that can be rendered by hardware render (like sprite, streak and points) by mental ray...

rsh

Quote

# 2 27-03-2007 , 10:33 AM

Moderator
Join Date: Oct 2002

Location: London, UK

Posts: 2,800

why would you ever want to? MR is for raytracing you don't raytrace hardware particles do you?! user added image

the answer is very likely no

user added image

Technical Director - Framestore

Currently working on: Your Highness

IMDB

Quote

# 3 27-03-2007 , 03:19 PM

Subscriber
Join Date: Sep 2005

Posts: 51

hardware render problem

hello
thanks for the reply but I got into the following problem and I thought in case mentalray can render.... the problem is,
I have made the attached firework sample which should be rendered with hardware render. if I render it as a single frame it works and nothing is missing but if I batch render it (no matter in what format) nothing shows up and the screen is black... or only some of the particles show up...

what should I do?

Attached Files

fireworks.mb (64.8 KB, 396 views)

rsh

Quote

# 4 27-03-2007 , 03:27 PM

Moderator
Join Date: Oct 2002

Location: London, UK

Posts: 2,800

have you done a particle cache?

select the particles

solvers>>create particle disk cache

(if you want to change the particles you need to delete this and re-do it)

then try rendering. Remember you don't assign shaders etc for hardware rendering so make sure that your particles have some colour so you can see them. Have you tried different particle types? e.g. multi streak just to see them a bit clearer. Is motion blur turned on? do you have enough samples?

user added image

Alan

Technical Director - Framestore

Currently working on: Your Highness

IMDB

Quote

# 5 27-03-2007 , 03:33 PM

Subscriber
Join Date: Sep 2005

Posts: 51

hardware render problem

hello
they do have color and as I said when I render them as single frame they show but when I do the batch render they don't however the multi streaks show up a little. the only thing I didn't do is to make a cache disk.
I will try that

rsh

Quote