PIXON_P Alpha blending

[Cristian Arezzini]

You mean simply reading the color of the pixel, increasing the value, and writing it back? That works (sort of), but it gets MUCH slower, because for every single iteration I have to run a read command on the screen, and a write command. And I run many thousands of iterations. The rendering time almost doubles, with respect to the alpha blending (where I only have one graphic command per iteration)...

Cristian