Hi everyone! For our latest serious game I’ve worked on a neat little water paint stain generator. It generates the following results:
I’m quite happy with how it turned out! If you want to know more about how I’ve done this exactly, I’ve posted an article on our company website detailing the process 
You can read the article here: In depth: Procedural water paint stains - Grendel Games
Interesting article, thanks. I read somewhere that GetPixel And SetPixel are relatively slow functions and it is faster to operate on arrays of pixels with GetPixels And SetPixels function. Maybe that was a bottleneck in
“BlitDrop” function on Android?
I didn’t go much in-depth about the optimization but we did indeed use the array functions. One other issue that still remained was that we called GetPixels on the drop sprite each time a drop was selected to blit (which is sometimes 10 times per frame).
GetPixels allocates a new array every time it is called. But since the drop sprites never change, they could easily be cached.
Glad you liked our article!
