NAME
QBlit -- Queue up a request for blitter usage
SYNOPSIS
QBlit( bp )
a1
void QBlit( struct bltnode * );Links: bltnode
FUNCTION
Link a request for the use of the blitter to the end of the current blitter queue. The pointer bp points to a blit structure containing, among other things, the link information, and the address of your routine which is to be called when the blitter queue finally gets around to this specific request. When your routine is called, you are in control of the blitter ... it is not busy with anyone else's requests. This means that you can directly specify the register contents and start the blitter. See the description of the blit structure and the uses of QBlit in the section titled Graphics Support in the OS Kernel Manual. Your code must be written to run either in supervisor or user mode on the 68000.
INPUTS
bp - pointer to a blit structure
RESULT Your routine is called when the blitter is ready for you. In general requests for blitter usage through this channel are put in front of those who use the blitter via OwnBlitter and DisownBlitter. However for small blits there is more overhead using the queuer than Own/Disown Blitter.
BUGS
SEE ALSO