MrMaarten

I'm pretty new to Jitter so forgive my ignorance...

I am working on drawing application. I am happy with the first version with the help of what I could find on the forum.

But as the drawing takes place in 3D sketch (smooth lines big lines get really blocky in jit.LCD), after a lot of strokes the application becomes slow.

So I want to make a snapshot of the drawing (sending it to a matrix and back to gl as a texture) then draw of that after each release of the mouse, clearing gl in the process. Also it enables me to device a undo system in the drawing app, by being able to go back x matrixes...

But I have a bit of a hard time with bringing the matrix back in 3D as a texture: the drawing looks much darker! Before I begin to compensate for it I thought to ask if I'm doing something wrong?

Also now I'm using asyncread to bring the 3D sketch into a matrix. But I think there must be a better way for an instance that only needs one frame on command.

Can someone please help me shed some light on this?

ps. the patch is not getting a high frame rate on my comp now but before it was. I cannot find the cause now, but that is not so important right now. thanks again

I am working on drawing application. I am happy with the first version with the help of what I could find on the forum.
But as the drawing takes place in 3D sketch (smooth lines big lines get really blocky in jit.LCD), after a lot of strokes the application becomes slow.
So I want to make a snapshot of the drawing (sending it to a matrix and back to gl as a texture) then draw of that after each release of the mouse, clearing gl in the process. Also it enables me to device a undo system in the drawing app, by being able to go back x matrixes...

ps. the patch is not getting a high frame rate on my comp now but before it was. I cannot find the cause now, but that is not so important right now. thanks again


send-one-frame-from-3d-sketch-to-matrix-matrix-to-texture-looks-darker

A good point to start would be the jitter tutorials and (for the to-matrix thingy) have a look inside the jitter-examples folder. Especially the render-tomatrix patch.

As for the color: You have to give your jit.gl.gridshape the correct color (white or black, depending on the blend_mode)

A good point to start would be the jitter tutorials and (for the to-matrix thingy) have a look inside the jitter-examples folder. Especially the render-tomatrix patch. 

As for the color: You have to give your jit.gl.gridshape the correct color (white or black, depending on the blend_mode)


Setting the background to white did indeed solve it (even if it is with alpha 0.)

oh my! Thanks!
Setting the background to white did indeed solve it (even if it is with alpha 0.) 

send one frame from 3D sketch to matrix / matrix to texture looks darker