Hugobox

I just noticed that using the notitle message on thispatcher on a big patch that uses Jitter with openGL can greatly reduce the FPS. In my case from 30 to 18 fps. Has anyone seen similar bahavior and if so was there a way to counter this performance drop while keeping the notitle option? Thanks.

jitter-framerate-and-thispatcher-notitle

As always, please provide your system information, hardware information, max version, and if possible a simple clear example patch so we can investigate.

We are aware of a similar issue with fullscreen windows (which are a form of notitle windows) under Snow Leopard, and are working on a more robust fix for 5.1.2 which may be related to the problem you are experiencing.

yeah at first I hoped it was a known bug, but on second thought it does need clarification: so max 5.1.0 on Vista SP2, with intel quad 2.4Ghz and 3mg ram, with an Nvidia Geforce 8600 GT. The bug doesn't occur on a simple jitter patch, so I'm guessing the more openGL stuff there is, the bigger the FPS drop, (will investigate and post as soon as conclusive).

Using the fullscreen message is even worse than notitle, I get 12 FPS, sounds hopefully related to the bug you're referring to.

yeah at first I hoped it was a known bug, but on second thought it does need clarification: so max 5.1.0 on Vista SP2, with intel quad 2.4Ghz and 3mg ram, with an Nvidia Geforce 8600 GT. The bug doesn't occur on a simple jitter patch, so I'm guessing the more openGL stuff there is, the bigger the FPS drop, (will investigate and post as soon as conclusive).
but...
Using the fullscreen message is even worse than notitle, I get 12 FPS, sounds hopefully related to the bug you're referring to.


here's a test patch which gives me the following results with patcher fullscreen 0 and notitle off:

with patcher fullscreen and/or notitle: its always a few Frames lower. (not as dramatic as in my real project patch which uses some videoplanes, some text3D and some textures on 3D openGL shapes.)

This one is the main patch: (poly patch is below)

this next patch is to be saved as shape.maxpat (this is going to load in the main patch poly:

here's a test patch which gives me the following results with patcher fullscreen 0 and notitle off:
1 sphere: 60fps
5 spheres: 50 FPS
10 spheres: 30 FPS
20 spheres: 15 FPS
30 spheres: 10 FPS

this next patch is to be saved as shape.maxpat (this is going to load in the main patch poly:


I was also wondering if these performances are normal for Jitter or my setup is under-performing for some reason... merely showing some spheres shouldn't drop the FPS so drastically.

i think your main problem with FPS is that you set the dimension of each gridshape to 150. this is unnecessarily large, and doesn't really add much visually.

you also might want to check out the jit.gl.multiple object for drawing several instances of a gl object efficiently.

i think your main problem with FPS is that you set the dimension of each gridshape to 150. this is unnecessarily large, and doesn't really add much visually.  

you also might want to check out the jit.gl.multiple object for drawing several instances of a gl object efficiently.


Yes. You typically don't need to use geometry that resolute for a simple sphere.

150 x 150 x 2 = 45000 polygons for each sphere in your example

30 x 45000 X 10 fps = 13.5 Million polygons per second

This is using glbegin/glvertex/glend calls and should be much faster if you cache the geometry on the card with a displaylist using jit.gl.gridshape @displaylist 1, unless your limiting factor is pixel fill rather than polygon count.

However, this doesn't seem to be a very relevant demonstration of what you're talking about for your main patch. And I believe it's unrelated to the issue on Snow Leopard.

Please let us know what version of the OS you are using as well as your graphics card. There may be some settings in your graphics driver's control panel which help or not.

150 x 150 x 2 = 45000 polygons for each sphere in your example
30 x 45000 X 10 fps = 13.5 Million polygons per second

Thanks for the tips and oversight ,your precious help and keen eyes are greatly appreciated!

Jitter framerate and thispatcher notitle