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Thread: a promblem about view frustum culling

  1. #1
    Junior Member Newbie
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    Jul 2013
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    Lightbulb a promblem about view frustum culling

    i read graphics book, book says view frustum culling occurs between projection matrix transform and project divide.
    it means that the point go to view frustum culling is nonhomogeneous coordinate.

    then , for example it does culling by using Sutherland-Hodgeman algorithm, but i see some graphics books which describe this algorithm, it processes by the 3d coordinate. is it means that we need divide w to get the 3d coordinate? this way repeatly uses the action of projection divide in next step. maybe my thinking is wrong. but i don't know where is wrong.

    can u help me solve my problem? thanks a lot!

  2. #2
    Senior Member OpenGL Guru Dark Photon's Avatar
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    Don't cross-post. Post your question on one forum only.

    Thread collapse here:
    * a promblem about view frustum culling

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