Floating Point

I've got 2 patches to post here. They are almost identical. The difference being one uses a single camera (works fine) and the other uses multiple cameras and almost works, but there is something seriously wrong...

Here is the first patch-- it generates particles in 3D space (multiple sphere gridshapes) which are then put through a gl.pix subpatch via a node to be made glowing, then in a slab to be keyed onto the background. The background is a cylindrical texture with a movie played on it. It all works fine...

OK, now I am going to post this as an attachment, then if it posts OK I'll post a reply with the second problem version of the patch. So stick around...

Here is the first patch-- it generates particles in 3D space (multiple sphere gridshapes) which are then put through a gl.pix  subpatch via a node to be made glowing, then in a slab to be keyed onto the background. The background is a cylindrical texture with a movie played on it. It all works fine...

OK, now I am going to post this as an attachment, then if it posts OK I'll post a reply with the second problem version of the patch. So stick around...


jitter-multiple-viewports-and-jit-gl-node-etc-help-needed

So if you look at the next attachment, all I've done is change the camera to multiple viewports, so that I can acheive a 360 degree panorama. Each of the eight cameras are offset by 45 degrees.

All the elements render properly, except the particles, where there seems to be some sort of conflict for a while, where the particles are rendered from an identical perspective for each viewport, rather than the whole scene, then eventually it just falls over.

I think it has something to do with how to cofigure jit.gl.node(s)-- I've tried many different combinations of nodes and sub-nodes and haven't had any success-- over to you jitter gurus...

edit: btw been using max 6, but can migrate to 7...

 All the elements render properly, except the particles, where there seems to be some sort of conflict for a while, where the particles are rendered from an identical perspective for each viewport, rather than the whole scene, then eventually it just falls over. 

edit: btw been using max 6, but can migrate to 7...


sorry to bump this but i've hit a wall with this one...help! ...please!

sorry to bump this but i've hit a wall with this one...help!  ...please!


i would recommend stripping this patch down to the simplest possible case that demonstrates the issue.

hi floating point.
i would recommend stripping this patch down to the simplest possible case that demonstrates the issue.


I believe I have managed to figure out the issue; had to have sixteen cameras, where a duplicate set of 8 is used to capture the render of the particles on a completely separate node, and then these two separate nodes are composited together. I'll post a solution if anyone is interested.

Hi Rob, thanks for the response--
I believe I have managed to figure out the issue; had to have sixteen cameras, where a duplicate set of 8 is used to capture the render of the particles on a completely separate node, and then these two separate nodes are composited together. I'll post a solution if anyone is interested.


I know the post is old, but I would be interested to see how you worked this out.

I know the post is old, but I would be interested to see how you worked this out.
Best,
Anton V.


can't reply to this request just now, too busy, give me a week

here is the 'fixed' patch-- it was done in max v6 so I don't know if it works in 7 ( i assume it would).

It's a bit more stripped down than the original posts for simplicity.

Basically i needed two render contexts, as outlined in the patch.

here is the 'fixed' patch-- it was done in max v6 so I don't know if it works in 7 ( i assume it would).
It's a bit more stripped down than the original posts for simplicity.
Basically i needed two render contexts, as outlined in the patch.

jitter, multiple viewports and jit.gl.node etc (help needed)