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Fix how the cmap entries are updated, as contributed by Arne Juul 

(arnej@pvv.unit.no). Xservers should now be able to set colours correctly.
This commit is contained in:
jonathan 1996-01-16 02:40:21 +00:00
parent 99ec00663a
commit 56ffba38d4
1 changed files with 12 additions and 9 deletions
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21
sys/arch/pmax/dev/bt478.c
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@ -1,4 +1,4 @@
/* $NetBSD: bt478.c,v 1.2 1995/11/25 10:38:42 mellon Exp $ */
/* $NetBSD: bt478.c,v 1.3 1996/01/16 02:40:21 jonathan Exp $ */
/*-
* Copyright (c) 1992, 1993
@ -266,22 +266,25 @@ bt478LoadColorMap(fi, bits, index, count)
u_char *cmap;
int i;
if (index > 256 || index < 0 || index + count > 256)
if (index < 0 || count < 1 || index + count > 256)
return EINVAL;
cmap_bits = (u_char *)bits;
cmap = (u_char *)(fi -> fi_cmap_bits) + index * 3;
vdac->mapWA = index; MachEmptyWriteBuffer();
for (i = 0; i < count; i++) {
cmap [(i + index) * 3]
= vdac->map = cmap_bits [i * 3];
vdac->mapWA = i + index; MachEmptyWriteBuffer();
cmap [i * 3] = cmap_bits [i * 3];
vdac->map = cmap_bits [i * 3];
MachEmptyWriteBuffer();
cmap [(i + index) * 3 + 1]
= vdac->map = cmap_bits [i * 3 + 1];
cmap [i * 3 + 1] = cmap_bits [i * 3 + 1];
vdac->map = cmap_bits [i * 3 + 1];
MachEmptyWriteBuffer();
cmap [(i + index) * 3 + 2]
= vdac -> map = cmap_bits [i * 3 + 2];
cmap [i * 3 + 2] = cmap_bits [i * 3 + 2];
vdac -> map = cmap_bits [i * 3 + 2];
MachEmptyWriteBuffer();
}
return 0;