I have several monochromatic sprites and I render them with alpha = 0.25 (all of them the same value). I want to "paint" with them, so when they overlap, the alpha won't be added. I am not sure if I can express myself properly in English - here is an image of what I want to achieve (background visibility is important).
Is this achievable in OpenGL ES 2.0? I was trying to figure out the different modes of alpha blending, but without success. Also if anyone can tell me, how is this called, I can continue my search.
If this is not possible, I was thinking maybe I can somehow render the monochromatic sprites (alpha = 1) to a texture and only then render this texture on screen. How can this be done in AndEngine?