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What's CanvasUpdate?

Discussion in 'UGUI & TextMesh Pro' started by StarManta, Aug 27, 2014.

  1. StarManta

    StarManta

    Joined:
    Oct 23, 2006
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    8,775
    What's the enum in the UI namespace called CanvasUpdate? It links to the Canvas clas but doesn't appear to be used there.
     
    StarManta, Aug 27, 2014
    #1

  2. Tim-C

    Tim-C

    Unity Technologies

    Joined:
    Feb 6, 2010
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    2,225
    It's used by the CanvasUpdateRegistry. We don't have this extensively covered in documentation yet, but feel free to play with it.

    Basically when we are about to render canvases we do:
    • Layout
    • Rebuild Canvas Graphics
    During normal update ect we don't actually update verts / materials we just register them with the UpdateRegistry, deferring the work till the last moment. You can register things with the UpdateRegistry and receive callbacks, only register things that have changed :)
     
    Tim-C, Aug 28, 2014
    #2

  3. a436t4ataf

    a436t4ataf

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    @Tim-C Is this still true? And is there a way to listen for the "rebuild canvas graphics"?

    Because - despite extensive googling, and reading the (largely non-existent) docs for Canvas*, and reading the source code as bst I could (all the stuff in C#, but the extern stuff obviously I don't have access to) I can't seem to find a reliable callback for "canvas finished doing layout".
     
    a436t4ataf, May 14, 2020
    #3
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  4. a436t4ataf

    a436t4ataf

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    a436t4ataf, May 14, 2020
    #4