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SpyRoX

I'd like to report a problem I've been having lately on dozens of different desktop/laptop with Windows 10/11 and laptop Mac Intel, with Max 8.6.5 and Max 9.1.1.

I initially thought it was due to the complexity of my patches or the size of the textures, but below is a 

 patch that shows the same error: a simple rectangle that scrolls from left to right once a second, the jit.world bang calculates its position, sync on, 60 fps.

The issue appears after a short time (usually 

, then performance returns to normal. After some time, the problem repeats.

Note that on Windows jit.fpsgui always reports a stable 60 fps, and I haven't found a way to check these dropped frames from within Max.

The only way I've found to objectively check for dropped frames is to use an HDMI to USB-C video capture card on another computer and calculate when there are duplicate frames.

Is this a known issue related to jit.world, internal scheduling, or the rendering loop?

OS-level GPU scheduling or power management?

Are there recommended flags, attributes, or diagnostics to better understand these periodic drops?

I'd like to report a problem I've been having lately on dozens of different desktop/laptop with Windows 10/11 and laptop Mac Intel, with...

intermittent-frame-drops-with-jitworld-max-8-max-9-on-any-computer

Intermittent Frame Drops with jit.world (Max 8 / Max 9) on any computer

elby

I have a fairly complicated jitter patch that receives a lot of OSC messages from a Pure Data audio installation. Briefly, it is composed of 8 gridshape that goes to 8 mesh that goes to 8 nodes that are blended to two spout server and I'm using Resolume to edgeblend this composition on a three projector screen. All data from the Pure Data patch are mapped to some parameter to do an audio - video reactive installation. It is working very well at hight fps, but : 

Randomly, I get these errors, always new random ID for both : 

name u709007696 already in use. ob3d does not allow multiple bindings

Also, the patch randomly closes/crashes without having a crash report on reopening.

https://drive.google.com/file/d/1Hmg7x_dE7E8klWfhwf-scRu8vLamsbiG/view?usp=sharing

Is someone here knows why I get these errors and if it could be related to the crashes?

Hi,

I have a fairly complicated jitter patch that receives a lot of OSC messages from a Pure Data audio installation. Briefly, it is...

random-nam-already-in-use-ob3d-does-not-allow-multiple-bindings

Random "name already in use. ob3d does not allow multiple bindings"

David Flaherty

I'm using the viddll engine in order to trigger jit.movie video playback with very low latency. Loading a video into ram with the "loadram" message does indeed allow me to trigger the video very quickly, but it also causes a spike in CPU usage, getting as high as 100-200% after loading just a single 4.2 MB 720p video. I have a patcher with several jit.movie instances that use jit.movie's @moviefile attribute to load video files and it reaches over 800% CPU when using viddll—and that's without any videos actually playing!

In addition, in spite of following Rob Ramirez's advice on viddll best practices (

https://cycling74.com/forums/jit-movie~-will-not-loop-video-smoothly-at-end-of-video#reply-5d8a294a816dc95cca0babd0

, except transcoding to HAP, which I was hoping wouldn't be necessary), I can't manage to get smooth looping working with viddll.

Am I missing some basic configuration step of some kind? Running 9.0.8 on an M4 Max MBP with plenty of memory.

I'm using the viddll engine in order to trigger jit.movie video playback with very low latency. Loading a video into ram with the "loadram"...

cpu-usage-and-looping-issues-using-viddll-with-jitmovie

CPU usage and looping issues using viddll with jit.movie

Laurent Clercq-Roques

I tried to compile the jit.hello example and I have a lot of interogations.

the firsts of them are the deprecated functions in the max.jit.hello.c file :

line 32 : 'max_jit_classex_standard_wrap' is deprecated

at the end the project can be succesfully compiled but when I try to use the fresh new compiled object in Max ( 8.6.5 version and 9.0.8 ) the object is not loaded....

jit.hello : could not load due to incorrect architecture

Are the two things linked ? if this is the case, what are the functions we should use to update the code with the good functions?

I tried to compile the jit.hello example and I have a lot of interogations.

the firsts of them are the deprecated functions in the...

compile-a-jitter-exemple-with-the-820-max-sdk

compile a jitter exemple with the 8.2.0 Max SDK

John M. WARTS

I have with jit.gl.gridshape a sphere going to a jit.gen and a jit.gl.mesh. 

Everything work fine and my effect to modify the shape is good. 

But, I apply a texture on jit.gl.mesh, the texture is good too but not center as I want. 

I tried to put matrixoutput : 2 on my gridshape to rotatexyz and change it localy but everything change in my scene, light, jit.gen ... 

I miss something for sure but I don't know what. I was thinking transform output was local like it says in documentation but it seems not working ! 

Transform jit.gl.gridshape without change the rest ? 

moon-gridshape-vs-3dmodel-rendering-texture

syrinx

Hi folks! When using gl2 as the render engine, it's possible to query the maximum texture size supported by your GPU by passing the message "glget max_texture_size" to jit.gl.sketch (as noted in 

). When using glcore, however, jit.gl.sketch throws an error:

jit_gl_sketch: doesn't understand "glget"

Is there some other way to retrieve the maximum texture size while using glcore?

Hi folks! When using gl2 as the render engine, it's possible to query the maximum texture size supported by your GPU by passing the message...

cant-query-maxtexturesize-via-jitglsketch-while-using-glcore

Can't query max_texture_size via jit.gl.sketch while using glcore

manmusic

I can't seem to use mc.jit.movie ~. I have a video file with an encapsulated LRLsRs. mc.jit.movie ~ only comes out of stereo. mc.jit.movie ~ is not documented. I have an arguments: mc.jit.movie ~ 4 60000 1 @adapt 1 @autostart 0 @engine viddll.

I can't seem to use mc.jit.movie ~. I have a video file with an encapsulated LRLsRs. mc.jit.movie ~ only comes out of stereo. mc.jit.movie ~

mc-jit-movie~

mc.jit.movie~

Deliverer

I would like to get control of reflectivity amount of 

If I connect a jit.gl.cubemap to the environment inlet of the 

.material will  fully reflect the environment. Great!

Since it doesn't seem possible to directly control the reflectivity inside the 

.material object (ok to tune diffuse or specular, but nothing regarding reflectivity…),  I tried to modulate the texture coming out the jit.gl.cubemap  with a divider inside a jit.gl.pix object: it doesn't work. Texture is made black.

And connecting a simple jit.gl.texture to the output of the the jit.gl.cubemap gives a strange result too: no more environment map, but a checkerboard…

Jitter Forum