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Thread: Apply antialiasing in certain area of the screen

  1. #1
    Newbie Newbie
    Join Date
    Nov 2017
    Posts
    1

    Apply antialiasing in certain area of the screen

    Hi guys,

    I'm trying to figure out how to apply antialiasing in certain areas of the screen.
    For example, if I have a star-shaped mask, how can I apply antialiasing in only that star-shaped area?

    Thanks.

  2. #2
    Senior Member OpenGL Lord
    Join Date
    May 2009
    Posts
    5,932
    Multisample antialiasing cannot be done on an arbitrary section of an image. A multisample resolve operation resolves the whole image (or at least, a rectangle of it).

    However, pseudo-antialiasing techniques like FXAA and the like can be made to work over an arbitrary area. You'd just use a stencil mask to prevent writes to the areas you don't want "antialiased".

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