24 vs 32bit color depth
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  1. #1
    Join Date
    Jun 2003
    Location
    italy
    Posts
    5

    24 vs 32bit color depth

    Hi!


    Assuming that I hope to understand the difference in bit deph

    existing between a RGB image (24bit of color depth or 16.5M

    colors) and a RGBa image (24bit of color depth plus 8bit

    alpha channel).

    I'd like to know whether 24/32bit , in a graphic card/PC

    monitor loop , works the same way or not?

    Pratically , my question is:
    In a Pc monitor , does 24bit color depth generate the same

    amount of colors as for 32bit color depth or not?

    And if yes what is the difference?

    Bye Luca
    never (I said never!)...taste the yellow-coloured snow!

  2. #2
    Join Date
    Apr 2000
    Location
    UK
    Posts
    8,466
    Welcome to HWC.

    The accepted terminology seems to be "colour mode". For example, you have a "32-bit colour mode" or "32-bit display mode"... this can consist of 10-bits per colour component (10R + 10G + 10B) and a 2-bit alpha channel. In fact, this is what Matrox do with the Parhelia. The same 32-bit mode could also consist of 8-bits per component and 8-bit alpha. Alpha channel information is never sent to a monitor - it is always combined with the colour components.

    There's a pretty good write up on it here if you're interested.

    MuFu.

  3. #3
    Join Date
    Jun 2003
    Location
    italy
    Posts
    5
    Originally posted by MuFu
    Welcome to HWC.
    MuFu.

    Thanks!



    Luca
    never (I said never!)...taste the yellow-coloured snow!

  4. #4
    Join Date
    Jun 2003
    Location
    italy
    Posts
    5
    Originally posted by MuFu

    The accepted terminology seems to be "colour mode". For example, you have a "32-bit colour mode" or "32-bit display mode"... this can consist of 10-bits per colour component (10R + 10G + 10B) and a 2-bit alpha channel. In fact, this is what Matrox do with the Parhelia. The same 32-bit mode could also consist of 8-bits per component and 8-bit alpha. Alpha channel information is never sent to a monitor - it is always combined with the colour components.

    There's a pretty good write up on it here if you're interested.

    MuFu.
    Thanks again!

    The URL you posted , was very effective!

    Bye Luca (I'm learning a lot of new stuff about video cards!)


    never (I said never!)...taste the yellow-coloured snow!

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