diff options
Diffstat (limited to 'sys/pmio/pmclear.x')
| -rw-r--r-- | sys/pmio/pmclear.x | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/sys/pmio/pmclear.x b/sys/pmio/pmclear.x new file mode 100644 index 00000000..1aed4013 --- /dev/null +++ b/sys/pmio/pmclear.x @@ -0,0 +1,28 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +include <imhdr.h> +include <pmset.h> +include <plio.h> + +# PM_CLEAR -- Clear a mask. The entire surface is cleared. This is equivalent +# to a full surface pm_rop with rop=PIX_CLR, but is more convenient and can be +# implemented more efficiently since the entire surface is cleared. + +procedure pm_clear (pl) + +pointer pl #I mask descriptor + +include "pmio.com" + +begin + if (PM_MAPXY(pl) == YES) { + call amovkl (1, v1, PM_MAXDIM) + call imaplv (PM_REFIM(pl), v1, v2, PM_MAXDIM) + call amovl (IM_LEN(PM_REFIM(pl),1), v3, PM_MAXDIM) + call imaplv (PM_REFIM(pl), v3, v4, PM_MAXDIM) + + call pl_rop (NULL, NULL, pl, v2, v4, PIX_CLR) + + } else + call pl_clear (pl) +end |