Draw texture inside defined UV's? Need Help!

Hey everybody,

I try to project a texture to a plane. now the simplest and fastest way i can think about is: to take the texture of the plane and define the edge points of uv for the projecting texture.

I guess it's the best to draw a graphic instead of write a long, boring text to show you what i mean

Is it possible to do this?
I'm glad about every answer.

If there are any questions open, please ask.

 

The simplest and fastest way would probably be to use the built in Projector component.

It would be possible to create the effect yourself, but it seems unnecessary - unless there's something specific you're trying to do that can't be done with a Projector?

 

Hey hadynlander,
i try to use it with render textures (draw texture) and want to do it multiple times a frame. so its to slow if i render it from a mesh and back to texture.
now i made a shader that uses linear equations but seem to be a little bit to slow.

isn't it possible to define a matrix from the edges?