calculating uv coordinate inside triangle

[rouncer]

http://c3.ac-images.myspacecdn.com/images02/79/l_0b09d8da80f94a5fbf2adc3a5633263a.png

I have a 2d triangle with uv coordinates, i have a point d and I wish to calculate the uv coordinates for this point.

It has to fit in a geometry shader, can someone help me out?

[Reedbeta]

Google for "barycentric coordinates", that should do the job.

[geon]

Don't forget to do perspective correction.

[Mihail121]

Don't forget to do perspective correction.

It's a 2D triangle...