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Index › Programming Questions & Help › Programs › Mask images on a different plane
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Mask images on a different plane (Read 379 times)
Elfuko
Mask images on a different plane
Jul 9th, 2007, 3:08am  
I face a problem, which I cannot figure out how to even start solving it.

I'm working in 3D, using openGL. I create a vertex polygon on plane (x,y) with a masked a texture. Then, I draw several images, which are drawn vertically to (x,y). I want the part of the images that is on top of the vertex not to be drawn. To put it in other words, it would be like as if I would create a 3D barrier object whose base would be defined by the polygon geometry, and its height I could set, to act as a black hole, masking the part of any image which happens to fall in it. Do I have any chance?
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