hello, you can set alpha blend type to be the maxinmum of each images.
cyrille
Georg Holzmann a écrit :
Hallo!
I have again a basic alpha blending problem, where I don't find a solution:
For example I have two images (A + B), which are overlapping at a small part (C):
| image A | | | | |------------------ | | C | | -----------|---- | | | | image B | -------------------
Now I want that image A and image B looks normal (unchanged) and in the overlapping part the two images are added so that one sees both - and all this with openGL commands (not pix_add or similar, because I have lots of such regions).
OK, I gave all images an alpha value of 0.5, but then the whole image losses brightness.
So my question: is there a way to get this alpha blending and without a loss of brightness in the images ? or can I "renormalize" this effect somehow (re-increase the brightness) ? (see attached patch where I illustruted this problem with 2 colored rectangles)
Thanks for any hint, LG Georg
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