Is this possible with procedural textures code? Say the procedure is currently operating on pixel (1,2) but I want to know the red values of the pixels at (1,1) ánd (1,3) - how do I get that data?
Is there any sort of array structure I can use to store and index a lot of different values?
Can I directly access the pixel data of the image as an array?
Also is there a way of shifting the entire image or perhaps the current row/column by n pixels procedurally (like "affine" but in code)?
If not then please consider this a feature request.