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Thread: Modifying a texture multiple times during one frame.

  1. #1
    Junior Member
    Join Date
    Mar 2004
    Posts
    4

    Modifying a texture multiple times during one frame.

    I am wondering whether the standard requires the following to work (I don't care about performance only about whether it renders correctly or not).

    If I during one frame do something like

    - CreateTexture A
    - Draw with texture A (Expecting the content of the create to be drawn)
    - Modify texture A
    - Draw with texture A (Expecting the content of the above modify to be drawn)
    - Modify texture A
    - Draw with texture A (Expecting the content of the above modify to be drawn)
    - Modify texture A
    - Modify texture A
    - Draw with texture A (Expecting the content of the last of the above modify to be drawn)
    - Delete texture A
    - Swapbuffers

    Is this required by the standard to produce the expected result as outlined with OpenGL ES?

  2. #2
    Senior Member
    Join Date
    May 2006
    Posts
    353

    Re: Modifying a texture multiple times during one frame.

    Quote Originally Posted by Unarmed
    Is this required by the standard to produce the expected result as outlined with OpenGL ES?
    Yes.
    Georg Kolling, Imagination Technologies
    Please ask questions specific to PowerVR hardware or SDKs on the PowerVR Insider Forum
    DevTech@imgtec.com | http://www.powervrinsider.com

  3. #3
    Junior Member
    Join Date
    Mar 2004
    Posts
    4

    Re: Modifying a texture multiple times during one frame.

    Thanks that is as I expected.

    I can now finally tell that driver writer that he isn't supplying a standard compliant OpenGL ES driver if the above doesn't work.

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