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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
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Checked in the following released items:
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Diffstat (limited to 'xorg-server/mi/mispans.h')
-rw-r--r--xorg-server/mi/mispans.h99
1 files changed, 99 insertions, 0 deletions
diff --git a/xorg-server/mi/mispans.h b/xorg-server/mi/mispans.h
new file mode 100644
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+++ b/xorg-server/mi/mispans.h
@@ -0,0 +1,99 @@
+/***********************************************************
+
+Copyright 1989, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1989 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+
+
+typedef struct {
+ int count; /* number of spans */
+ DDXPointPtr points; /* pointer to list of start points */
+ int *widths; /* pointer to list of widths */
+} Spans;
+
+typedef struct {
+ int size; /* Total number of *Spans allocated */
+ int count; /* Number of *Spans actually in group */
+ Spans *group; /* List of Spans */
+ int ymin, ymax; /* Min, max y values encountered */
+} SpanGroup;
+
+/* Initialize SpanGroup. MUST BE DONE before use. */
+extern void miInitSpanGroup(
+ SpanGroup * /*spanGroup*/
+);
+
+/* Add a Spans to a SpanGroup. The spans MUST BE in y-sorted order */
+extern void miAppendSpans(
+ SpanGroup * /*spanGroup*/,
+ SpanGroup * /*otherGroup*/,
+ Spans * /*spans*/
+);
+
+/* Paint a span group, insuring that each pixel is painted at most once */
+extern void miFillUniqueSpanGroup(
+ DrawablePtr /*pDraw*/,
+ GCPtr /*pGC*/,
+ SpanGroup * /*spanGroup*/
+);
+
+/* Free up data in a span group. MUST BE DONE or you'll suffer memory leaks */
+extern void miFreeSpanGroup(
+ SpanGroup * /*spanGroup*/
+);
+
+extern int miClipSpans(
+ RegionPtr /*prgnDst*/,
+ DDXPointPtr /*ppt*/,
+ int * /*pwidth*/,
+ int /*nspans*/,
+ DDXPointPtr /*pptNew*/,
+ int * /*pwidthNew*/,
+ int /*fSorted*/
+);
+
+/* Rops which must use span groups */
+#define miSpansCarefulRop(rop) (((rop) & 0xc) == 0x8 || ((rop) & 0x3) == 0x2)
+#define miSpansEasyRop(rop) (!miSpansCarefulRop(rop))
+