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Type: Posts; User: john_h

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  1. Re: Fast pixel transfer to and from graphic cards in OpenVG ?

    Hi Ivo,

    Thank you for your reply !


    Right. If I work on a single image, step iv will not be used.
    The reason I am uploading new bmp images is I need to work on image sequence. My application...
  2. Re: Fast pixel transfer to and from graphic cards in OpenVG ?

    Hi Ivo,

    I modified the code and tested it for the same images.

    In the InitView,
    - I created a vgImage one time using vgCreateImage() in sRGBA_8888 format
    - loaded the first RGB 24-bit bmp...
  3. Re: Fast pixel transfer to and from graphic cards in OpenVG ?

    Thank you for your suggestion !!

    I got it. I will try the way you suggested and update.

    Thanks.

    john
  4. Re: Fast pixel transfer to and from graphic cards in OpenVG ?

    Hi Ivo,

    Thank you for your reply !!

    "If all you're doing is rotating, you should be doing that by doing a vgRotate() on the VG_MATRIX_IMAGE_USER_TO_SURFACE matrix."

    I am rotating the bmp...
  5. Re: Fast pixel transfer to and from graphic cards in OpenVG ?

    Hi Ivo,

    Thank you for your reply !

    I am a newbie to OpenGL and OpenVG...and it looks there should no subsequent delays (500 msec for each bmp transfer, in my case) except the first frame.
    ...
  6. Fast pixel transfer to and from graphic cards in OpenVG ?

    Hi,

    Does anybody know how to speed up pixel data transfer to and from graphic cards without involving CPU cycles ?

    I am trying to develop a test application on TI OMAP3530 beagleboard that...
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