yaniki

Im looking for an equivalent of [jit.submatrix], but GPU-based (producing cropped matrix from texture). Basically, I have a "big", high resolution texture, and I have to select a fragment of the texture, and finally convert selected fragment to a matrix (maybe with additional rescaling) for further analysis.

It is very simple with [jit.submatrix], but I have to convert the texture into matrix before - for many reasons, I would like to avoid copying full texture from graphics card, and I want to keep computations on GPU.

I was thinking about [jit.gl.pix] or [jit.gl.gen], but I don't know, how to create output texture with arbitrary dimensions (different, than source texture) and dup this output texture to the matrix.

I will be grateful for any suggestions...

an-equivalent-of-jit-submatrix-but-gpu-based

maybe Rob's reply to this thread can help you:

https://cycling74.com/forums/jit-gl-texture-and-dstdimstart-dstdimend/

maybe Rob's reply to this thread can help you:
https://cycling74.com/forums/jit-gl-texture-and-dstdimstart-dstdimend/


I have to investigate a bit this direction, but it seems to be very promising...