[PD] [GEM-dev] Blending mode directly on objects, not pixes?

[Matteo Sisti Sette]

Jack escribió:
> Is it what you are looking for ?

Well, since I use Windows pix_share_write and read don't work, but I 
guess I could do the same without those objects.

Yes, this is one approach. I was looking for another approach that 
wouldn't involve taking snapshots of the scene and adding them as 
textures, but I guess this is the only reasonable way of doing it (in gem)

thanks.


By the way, another question...

Suppose I have an image stream from the camera of WxH pixels, and I have 
to create a (N*W)x(N*H) image composed by an NxN "grid" where each 
element of the grid is either a copy of the camera image (possibly 
manipulated) or an empty all-transparent image (i.e. WxH pixels with 
alpha=0). So the resulting image has some transparent regions (rectangles).

Now, given that this image has to be blended with another one (which is 
indeed a previous snapshot of the same input), what approach would you 
recommend:
A) Use several [rectangle]s on a plane, get a snapshot of the 
framebuffer and put it into a texture
B) manipulate the camera input as pix, or as texture, and compose a 
bigger pix, so only at the very end, for displaying, you would use a 
rectangle
?


Thanks
m.



-- 
Matteo Sisti Sette
matteosistisette at gmail.com
http://www.matteosistisette.com