[pixelpoet]

No problem, and I highly recommend using OpenCL to get started, it's actually pretty short and straightforward (lookin' at you, Vulkan compute!). So basically, the stuff in the for-loops you had before, that's the kernel you'll be writing.

I daresay it's actually easier to render things this way than getting lost in the weeds with API docs etc. A simple Mandelbrot hello-world example should be easy to understand and get compiling, and you can go from there.