Hello there,

As you might have guessed... I have a problem. I'm trying to make a simple composite of two images in Gem, a still and a video stream. On the I use pix alpha to make part of the image transparant, on the second I do nothing. Then I composite them together using pix_composite.
The problem is that I want to make the first image smaller or bigger. If I just resize it using pix_resize, the two don't match in size anymore and Pix composite wants them to be the same size. The only solution I've found so far is to first first use pix_crop to isolate the part of the image I want and then use resize to scale it back up to the size it needs to be for the composite. This works, but slows everything down beyond usability.
I tried to put a scale object after the first image, but this scales up both images and I only want to scale that first layer.

Any ideas?

much thanks

Upload both as textures to the graphics card, and texture them on squares, then change the texture coordinates to show the part of the image you want.

pix_stuff works on the CPU, which is very slow. Get your pix into textures and let the GPU do what it's good at.

Thanks for your reply claudius. There's only one thing I don't understand in this approach and have no success with. I guess I'm doing something wrong. When I put both as a separate texture, I can move and scale the object as I want, but the part of the first image that has to be transparent is no longer transparent. When I texture something, geos can't be transparant?

grtz

wimmm

for anyone with the same problem, pix_zoom might be a sollution. Not for me though, I couldn't figure it out either. pdp has a zoom that worked easily though.

grtz