| From: | Mathias PARNAUDEAU |
| Date: | 18 Aug 99 at 09:14:14 |
| Subject: | Re: 16Bit Chunky |
Le 10-Ao�t-99, Paul Burkey a �crit:
>For the actual pixel formats you`d have to search for some specs or
>perhaps
>do some experimentation. A 16bit pixel might look like xRRRRRGGGGGBBBBB
>or
>perhaps RRRRRGGGGGGBBBBB where the red/green/blue values each have 5bit
>(or
>sometimes 6bit for green) but sometimes the extra 16th bit is not used
>for
>actual color.
I just know it exists a format (the RGB one, called SGI too, and used by
Silicon Graphics) which stores 16 bits
pixels like this : RRRRRGGGGGBBBBBA, where A is an unused bit (maybe a
transparent layer ?). This sub-format is called 5551 (easy to
understand, replaces 888) and allow to code good quality images using 2
bytes per pixel, instead of 24 or 32 (OpenGl have to use 4 bytes to code
a 24 bit pixel).
Cheers,
Email : mathias.p@wanadoo.fr
Site Web : http://perso.wanadoo.fr/supersport/
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