lut lei

I've got a folder of pretty high-res pictures that I'm loading into a jit.matrix. This is done from an ubumenu. These pictures are then used as a texture, and animatad with openGL-stuff. All the pictures have different dimensions, but are at least 300dpi, but the matrix I load them into is 1024x1024, - which of course messes up the proportions.

Problem is that each time I load a new picture, the animation hangs for a second. Could someone please instruct me on how I can avoid this.

loading-pictures-without-glitches-2

Ooops. My flaky internet connection made me post this in two topics. Sorry.

Anyway. Made a small performance yesterday, and my workaround was to have ten different jit.matrix objects, with preloaded pictures, and using 'switch' to choose picture. That worked ok, but I initially had ca 100 pictures, and that method is inefficient.

I've searched, and tried to find out how to use jit.matrixset, but haven't succeeded.

Should have prepared my pictures to be 1024x1024 on forehand, but didn't have the time. Should have prepared them in many different ways I guess, but... time.

> Anyway. Made a small performance yesterday, and my workaround was 

> to have ten different jit.matrix objects, with preloaded pictures, 

> and using 'switch' to choose picture. That worked ok, but I 

> initially had ca 100 pictures, and that method is inefficient.

Btw, I'd recommend that you check out jit.qt.movie's asyncread 

message which loads a movie (or image) in a background thread. 

Probably need at least two instances in this case, since you may want 

to use one while the other is loading in the background...

>
> Anyway. Made a small performance yesterday, and my workaround was  
> to have ten different jit.matrix objects, with preloaded pictures,  
> and using 'switch' to choose picture. That worked ok, but I  
> initially had ca 100 pictures, and that method is inefficient.

Btw, I'd recommend that you check out jit.qt.movie's asyncread  
message which loads a movie (or image) in a background thread.  
Probably need at least two instances in this case, since you may want  
to use one while the other is loading in the background...

Thanks, yes. Using asyncread made things better, but still it seems to be some glitches in the animation, - probably when the picture is big.

I guess I should adapt one of the mentioned methods. Loading them onto GPU, as mentioned in another thread, or using matrixset.

This is my take on the jit.matrixset. Which seems to be a nice method if I prepeare my pics. No glitches;)

Thanks, yes. Using asyncread made things better, but still it seems to be some glitches in the animation, - probably when the picture is big. 

loading pictures without glitches