home *** CD-ROM | disk | FTP | other *** search
- New sprite format
- =================
-
- Version 0.90 (10-Jan-1993)
- SPRtools block 1 release.
- (C) 1993 DEEJ Technology PLC
-
-
- 15/16 and 24/32 bit sprite format
- ---------------------------------
-
- The Sprite Control Block contains the following:
-
- Bytes Content
-
- 0 - 3 Offset to next sprite
- 4 - 15 Sprite name, up to 12 characters
- 16 - 19 Width in words-1
- 20 - 23 Height in scan lines-1
- 24 - 27 First bit used (left end of row) - should be 0
- 32 - 35 Offset to sprite image
- 36 - 39 Offset to transparency mask or offset to sprite image
- if no mask
- 40 - 43 Mode sprite was defined in
-
- Bit Content
-
- 0 Should be one
- 1 - 13 x-resolution in dpi (dots per inch), which
- can only be equal to 45 or 90
- 14 - 26 y-resolution in dpi
- 27 - 31 Type of image: 0 = old format
- 1 = 1 bpp
- 2 = 2 bpp
- 3 = 4 bpp
- 4 = 8 bpp
- 5 = 16 bpp
- 6 = 32 bpp
- 7 = 32 bpp CMYK
-
- For 15/16 bpp sprites, the format of each pixel of the sprite image is as
- follows:
-
- Bits Content
-
- 4 - 0 R
- 9 - 5 G
- 14 - 10 B
- 15 Not used
-
- For 24/32 bpp sprites, the format of each pixel of the sprite image is as
-
- Bytes Content
- 0 R
- 1 G
- 2 B
- 3 Not Used (Alpha channel information)
-
-
- Disclaimer
- ----------
- All information is understood to be correct at time of writing.
-
-