diff options
Diffstat (limited to 'static/v10/man9/bitfile.9')
| -rw-r--r-- | static/v10/man9/bitfile.9 | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/static/v10/man9/bitfile.9 b/static/v10/man9/bitfile.9 new file mode 100644 index 00000000..f31e2c9c --- /dev/null +++ b/static/v10/man9/bitfile.9 @@ -0,0 +1,74 @@ +.TH BITFILE 9.5 +.CT 1 comm_other +.SH NAME +bitfile \- format of bitmap file +.SH DESCRIPTION +Binary files produced by +.IR blitblt (9.1) +and other bitmap-generating programs +are formatted as follows: +.TP 12 +Byte no. +Description +.TP +0, 1: +Zero. +.TP +2, 3: +.IR x -coordinate +of the rectangle origin (low-order byte, high-order byte). +.TP +4, 5: +.IR Y -coordinate +of the rectangle origin (low-order byte, high-order byte). +.TP +6, 7: +.IR x -coordinate +of the rectangle corner (low-order byte, high-order byte). +.TP +8, 9: +.IR Y -coordinate +of the rectangle corner (low-order byte, high-order byte). +.TP +remainder: +Compressed raster data. +Each raster is exclusive-or'd +with the previous one, and +zero-extended (if necessary) to a 16-bit boundary. +It is then encoded into +byte sequences, each of which consists of a control byte followed by +two or more data bytes: +.TP 12 +Control +Data +.TP +.IR n " (< 127)" +.RI 2\(mu n +bytes of raster data, running from left to right. +.TP +.BI "0x80+" n +2 bytes of raster data, to be replicated from left to right +.I n +times. +.LP +There are also two +.SM ASCII +formats in current use. +Textures and 16\(mu16 icons, +as created by +.IR icon (9.1), +are encoded as a +.B Texture +declaration with initializer, +to be copied unchanged into C program source; see +.IR types (9.5). +Faces and other large icons +are without any surrounding C syntax. +In either case, each scan line of the +bitmap is a comma-separated list of C-style short +hexadecimal constants; scan lines are separated by newlines. +.SH "SEE ALSO" +.IR blitblt (9.1), +.IR icon (9.1), +.IR types (9.5), +.IR vismon (9.1) |