pdelges

Hi. I try to get diff frames using openGL like in the following patch.

I noticed there are sometimes black frames (or should I write 

?) generated although there is always movement in the output of grab (i.e. all frames are ≠). I can see it on the jit.window, and in the recording I do.

This happens with my iMac's internal camera, but also with a small USB camera, with all formats I tried.

So I wonder what I do wrong (my skills in Jitter/OpenGL are not very good yet I'm afraid, but I do work on it…) Could it be some sync problem between the grab and the diff?

deferlow

attrui

message

jit.record

jit.gl.asyncread

jit.world

button

loadbang

iter

prepend

route

inlet

outlet

umenu

jit.grab

jit.gl.slab

I noticed there are sometimes black frames (or should I write textures ?) generated  although there is always movement in the output of grab (i.e. all frames are ≠). I can see it on the jit.window, and in the recording I do.

So I wonder what I do wrong (my skills in Jitter/OpenGL are not very good yet I'm afraid, but I do work  on it…) Could it be some sync problem between the grab and the diff?

Hi. I try to get diff frames using openGL like in the following patch.
I noticed there are sometimes black frames (or should I write texture

black-frames-using-jit-gl-slab-file-op-absdiff-jxs

In case someone is interested, I think I found the reason of my problem. Identical frames are sent from jit.grab, so diff obviously gives a black frame when ther eis no… difference. Setting jit.grab's 

In case someone is interested, I think I found the reason of my problem. Identical frames are sent from jit.grab, so diff obviously gives a black frame when ther eis no… difference. Setting jit.grab's @unique attribute to 1  was the way to go.
So many things to learn…

Black frames using [jit.gl.slab @file op.absdiff.jxs]