c++ - problem with shadow volume using opengl -

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i cannot figure out solution shadown projections using shadow volumes , stencil buffers. problem can viewed in: www.dt.fee.unicamp.br/~ricfow/shadowproblem.avi

in other video: www.dt.fee.unicamp.br/~ricfow/shadowproblemaux.avi faces associated silhouettes have been draw, blue means front face , red face.

what problem?

problem solved. edges beloging silhouettes being extruded twice. thanks.


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