diff options
Diffstat (limited to 'xorg-server/mi/mipolygen.c')
| -rw-r--r-- | xorg-server/mi/mipolygen.c | 460 |
1 files changed, 230 insertions, 230 deletions
diff --git a/xorg-server/mi/mipolygen.c b/xorg-server/mi/mipolygen.c index 4744583c3..3dbf68960 100644 --- a/xorg-server/mi/mipolygen.c +++ b/xorg-server/mi/mipolygen.c @@ -1,230 +1,230 @@ -/*********************************************************** - -Copyright 1987, 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 1987 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. - -******************************************************************/ -#ifdef HAVE_DIX_CONFIG_H -#include <dix-config.h> -#endif - -#include <X11/X.h> -#include "gcstruct.h" -#include "miscanfill.h" -#include "mipoly.h" -#include "pixmap.h" -#include "mi.h" - -/* - * - * Written by Brian Kelleher; Oct. 1985 - * - * Routine to fill a polygon. Two fill rules are - * supported: frWINDING and frEVENODD. - * - * See fillpoly.h for a complete description of the algorithm. - */ - -Bool -miFillGeneralPoly( - DrawablePtr dst, - GCPtr pgc, - int count, /* number of points */ - DDXPointPtr ptsIn /* the points */ - ) -{ - EdgeTableEntry *pAET; /* the Active Edge Table */ - int y; /* the current scanline */ - int nPts = 0; /* number of pts in buffer */ - EdgeTableEntry *pWETE; /* Winding Edge Table */ - ScanLineList *pSLL; /* Current ScanLineList */ - DDXPointPtr ptsOut; /* ptr to output buffers */ - int *width; - DDXPointRec FirstPoint[NUMPTSTOBUFFER]; /* the output buffers */ - int FirstWidth[NUMPTSTOBUFFER]; - EdgeTableEntry *pPrevAET; /* previous AET entry */ - EdgeTable ET; /* Edge Table header node */ - EdgeTableEntry AET; /* Active ET header node */ - EdgeTableEntry *pETEs; /* Edge Table Entries buff */ - ScanLineListBlock SLLBlock; /* header for ScanLineList */ - int fixWAET = 0; - - if (count < 3) - return(TRUE); - - if(!(pETEs = xalloc(sizeof(EdgeTableEntry) * count))) - return(FALSE); - ptsOut = FirstPoint; - width = FirstWidth; - if (!miCreateETandAET(count, ptsIn, &ET, &AET, pETEs, &SLLBlock)) - { - xfree(pETEs); - return(FALSE); - } - pSLL = ET.scanlines.next; - - if (pgc->fillRule == EvenOddRule) - { - /* - * for each scanline - */ - for (y = ET.ymin; y < ET.ymax; y++) - { - /* - * Add a new edge to the active edge table when we - * get to the next edge. - */ - if (pSLL && y == pSLL->scanline) - { - miloadAET(&AET, pSLL->edgelist); - pSLL = pSLL->next; - } - pPrevAET = &AET; - pAET = AET.next; - - /* - * for each active edge - */ - while (pAET) - { - ptsOut->x = pAET->bres.minor; - ptsOut++->y = y; - *width++ = pAET->next->bres.minor - pAET->bres.minor; - nPts++; - - /* - * send out the buffer when its full - */ - if (nPts == NUMPTSTOBUFFER) - { - (*pgc->ops->FillSpans)(dst, pgc, - nPts, FirstPoint, FirstWidth, - 1); - ptsOut = FirstPoint; - width = FirstWidth; - nPts = 0; - } - EVALUATEEDGEEVENODD(pAET, pPrevAET, y) - EVALUATEEDGEEVENODD(pAET, pPrevAET, y); - } - miInsertionSort(&AET); - } - } - else /* default to WindingNumber */ - { - /* - * for each scanline - */ - for (y = ET.ymin; y < ET.ymax; y++) - { - /* - * Add a new edge to the active edge table when we - * get to the next edge. - */ - if (pSLL && y == pSLL->scanline) - { - miloadAET(&AET, pSLL->edgelist); - micomputeWAET(&AET); - pSLL = pSLL->next; - } - pPrevAET = &AET; - pAET = AET.next; - pWETE = pAET; - - /* - * for each active edge - */ - while (pAET) - { - /* - * if the next edge in the active edge table is - * also the next edge in the winding active edge - * table. - */ - if (pWETE == pAET) - { - ptsOut->x = pAET->bres.minor; - ptsOut++->y = y; - *width++ = pAET->nextWETE->bres.minor - pAET->bres.minor; - nPts++; - - /* - * send out the buffer - */ - if (nPts == NUMPTSTOBUFFER) - { - (*pgc->ops->FillSpans)(dst, pgc, nPts, FirstPoint, - FirstWidth, 1); - ptsOut = FirstPoint; - width = FirstWidth; - nPts = 0; - } - - pWETE = pWETE->nextWETE; - while (pWETE != pAET) - EVALUATEEDGEWINDING(pAET, pPrevAET, y, fixWAET); - pWETE = pWETE->nextWETE; - } - EVALUATEEDGEWINDING(pAET, pPrevAET, y, fixWAET); - } - - /* - * reevaluate the Winding active edge table if we - * just had to resort it or if we just exited an edge. - */ - if (miInsertionSort(&AET) || fixWAET) - { - micomputeWAET(&AET); - fixWAET = 0; - } - } - } - - /* - * Get any spans that we missed by buffering - */ - (*pgc->ops->FillSpans)(dst, pgc, nPts, FirstPoint, FirstWidth, 1); - xfree(pETEs); - miFreeStorage(SLLBlock.next); - return(TRUE); -} +/***********************************************************
+
+Copyright 1987, 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 1987 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.
+
+******************************************************************/
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include "gcstruct.h"
+#include "miscanfill.h"
+#include "mipoly.h"
+#include "pixmap.h"
+#include "mi.h"
+
+/*
+ *
+ * Written by Brian Kelleher; Oct. 1985
+ *
+ * Routine to fill a polygon. Two fill rules are
+ * supported: frWINDING and frEVENODD.
+ *
+ * See fillpoly.h for a complete description of the algorithm.
+ */
+
+Bool
+miFillGeneralPoly(
+ DrawablePtr dst,
+ GCPtr pgc,
+ int count, /* number of points */
+ DDXPointPtr ptsIn /* the points */
+ )
+{
+ EdgeTableEntry *pAET; /* the Active Edge Table */
+ int y; /* the current scanline */
+ int nPts = 0; /* number of pts in buffer */
+ EdgeTableEntry *pWETE; /* Winding Edge Table */
+ ScanLineList *pSLL; /* Current ScanLineList */
+ DDXPointPtr ptsOut; /* ptr to output buffers */
+ int *width;
+ DDXPointRec FirstPoint[NUMPTSTOBUFFER]; /* the output buffers */
+ int FirstWidth[NUMPTSTOBUFFER];
+ EdgeTableEntry *pPrevAET; /* previous AET entry */
+ EdgeTable ET; /* Edge Table header node */
+ EdgeTableEntry AET; /* Active ET header node */
+ EdgeTableEntry *pETEs; /* Edge Table Entries buff */
+ ScanLineListBlock SLLBlock; /* header for ScanLineList */
+ int fixWAET = 0;
+
+ if (count < 3)
+ return(TRUE);
+
+ if(!(pETEs = malloc(sizeof(EdgeTableEntry) * count)))
+ return(FALSE);
+ ptsOut = FirstPoint;
+ width = FirstWidth;
+ if (!miCreateETandAET(count, ptsIn, &ET, &AET, pETEs, &SLLBlock))
+ {
+ free(pETEs);
+ return(FALSE);
+ }
+ pSLL = ET.scanlines.next;
+
+ if (pgc->fillRule == EvenOddRule)
+ {
+ /*
+ * for each scanline
+ */
+ for (y = ET.ymin; y < ET.ymax; y++)
+ {
+ /*
+ * Add a new edge to the active edge table when we
+ * get to the next edge.
+ */
+ if (pSLL && y == pSLL->scanline)
+ {
+ miloadAET(&AET, pSLL->edgelist);
+ pSLL = pSLL->next;
+ }
+ pPrevAET = &AET;
+ pAET = AET.next;
+
+ /*
+ * for each active edge
+ */
+ while (pAET)
+ {
+ ptsOut->x = pAET->bres.minor;
+ ptsOut++->y = y;
+ *width++ = pAET->next->bres.minor - pAET->bres.minor;
+ nPts++;
+
+ /*
+ * send out the buffer when its full
+ */
+ if (nPts == NUMPTSTOBUFFER)
+ {
+ (*pgc->ops->FillSpans)(dst, pgc,
+ nPts, FirstPoint, FirstWidth,
+ 1);
+ ptsOut = FirstPoint;
+ width = FirstWidth;
+ nPts = 0;
+ }
+ EVALUATEEDGEEVENODD(pAET, pPrevAET, y)
+ EVALUATEEDGEEVENODD(pAET, pPrevAET, y);
+ }
+ miInsertionSort(&AET);
+ }
+ }
+ else /* default to WindingNumber */
+ {
+ /*
+ * for each scanline
+ */
+ for (y = ET.ymin; y < ET.ymax; y++)
+ {
+ /*
+ * Add a new edge to the active edge table when we
+ * get to the next edge.
+ */
+ if (pSLL && y == pSLL->scanline)
+ {
+ miloadAET(&AET, pSLL->edgelist);
+ micomputeWAET(&AET);
+ pSLL = pSLL->next;
+ }
+ pPrevAET = &AET;
+ pAET = AET.next;
+ pWETE = pAET;
+
+ /*
+ * for each active edge
+ */
+ while (pAET)
+ {
+ /*
+ * if the next edge in the active edge table is
+ * also the next edge in the winding active edge
+ * table.
+ */
+ if (pWETE == pAET)
+ {
+ ptsOut->x = pAET->bres.minor;
+ ptsOut++->y = y;
+ *width++ = pAET->nextWETE->bres.minor - pAET->bres.minor;
+ nPts++;
+
+ /*
+ * send out the buffer
+ */
+ if (nPts == NUMPTSTOBUFFER)
+ {
+ (*pgc->ops->FillSpans)(dst, pgc, nPts, FirstPoint,
+ FirstWidth, 1);
+ ptsOut = FirstPoint;
+ width = FirstWidth;
+ nPts = 0;
+ }
+
+ pWETE = pWETE->nextWETE;
+ while (pWETE != pAET)
+ EVALUATEEDGEWINDING(pAET, pPrevAET, y, fixWAET);
+ pWETE = pWETE->nextWETE;
+ }
+ EVALUATEEDGEWINDING(pAET, pPrevAET, y, fixWAET);
+ }
+
+ /*
+ * reevaluate the Winding active edge table if we
+ * just had to resort it or if we just exited an edge.
+ */
+ if (miInsertionSort(&AET) || fixWAET)
+ {
+ micomputeWAET(&AET);
+ fixWAET = 0;
+ }
+ }
+ }
+
+ /*
+ * Get any spans that we missed by buffering
+ */
+ (*pgc->ops->FillSpans)(dst, pgc, nPts, FirstPoint, FirstWidth, 1);
+ free(pETEs);
+ miFreeStorage(SLLBlock.next);
+ return(TRUE);
+}
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