Porter Duff Composition Support

adipose

Is there any way to do Porter and Duff composition in Gideros? In Android there is a library:

http://developer.android.com/reference/android/graphics/PorterDuffColorFilter.html

This is a very powerful library that allows some pretty cool things. Do we have anything like this in Gideros?

adipose

I found setColorTransform, which can almost do what I want.

Unfortunately, it is very weak, in that it can only multiply existing values.

To do what I want, I would first need set all image values to 255, then use setColorTransform accordingly (on a new bitmap). Then I could draw this bitmap on top of the old one. This would emulate the SRC_ATOP function of Porter Duff filters.

Render to texture could help, here...but just supporting PorterDuff would be much better!

atilim

Unfortunately, most of the Porter and Duff composition modes cannot be emulated with OpenGL ES 1.1. Here you only have Sprite:setColorTransform and Sprite:setBlendMode.