Function

Summary

Copies one area of a graphics port to another area of a different graphics port.

Signature

pixblt to-port
 operation
 from-port
 to-x
 to-y
 width
 height
 from-x

       from-y
 &optional depth

Arguments

to-port

A graphics port

operation

A graphics state operation

from-port

A graphics port

to-x

An integer

to-y

An integer

width

An integer

height

An integer

from-x

An integer

from-y

An integer

depth

An integer

Description

The pixblt function copies one area of from-port to another area of to-port using the specified operation and mask . Both ports should be the same depth. The depth argument is available only to further optimize performance. If it is supplied, it should give the depth in pixels of both ports. Its presence obviates another call to port-depth in order to find out the destination port depth. The graphics port transforms are not used.