1 files changed, 202 insertions, 213 deletions
diff --git a/xorg-server/hw/xfree86/xaa/xaaFillArc.c b/xorg-server/hw/xfree86/xaa/xaaFillArc.c
index 824d2af1d..fb7e7201f 100644
--- a/xorg-server/hw/xfree86/xaa/xaaFillArc.c
+++ b/xorg-server/hw/xfree86/xaa/xaaFillArc.c
@@ -1,213 +1,202 @@
-/*
- * Copyright 1996  The XFree86 Project
- *
- * Permission is hereby granted, free of charge, to any person obtaining a 
- * copy of this software and associated documentation files (the "Software"), 
- * to deal in the Software without restriction, including without limitation 
- * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
- * and/or sell copies of the Software, and to permit persons to whom the 
- * Software is furnished to do so, subject to the following conditions:
- *
- * 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 
- * HARM HANEMAAYER 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.
- * 
- * Written by Harm Hanemaayer (H.Hanemaayer@inter.nl.net).
- */
- 
-/*
- * Filled solid arcs, based on cfbfillarc.c.
- *
- * Fill arc using calls to low-level span fill. Because the math for
- * each span can be done concurrently with the drawing of the span
- * with a graphics coprocessor operation, this is faster than just
- * using miPolyFillArc, which first calculates all the spans and then
- * calls FillSpans.
- *
- * Clipped arcs are dispatched to FillSpans.
- */
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#include <limits.h>
-
-#include "misc.h"
-#include "xf86.h"
-#include "xf86_OSproc.h"
-
-#include <X11/X.h>
-#include "scrnintstr.h"
-#include "pixmapstr.h"
-#include "xf86str.h"
-#include "xaa.h"
-#include "xaalocal.h"
-#include "mifillarc.h"
-#include "mi.h"
-
-/*
- * This is based on the integer-math versions from mi. Perhaps on a
- * Pentium, the floating-point (double)-math version is faster.
- */
-
-static void
-XAAFillEllipseSolid(DrawablePtr pDraw, GCPtr pGC, xArc *arc)
-{
-    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
-    register int x, y, e;
-    int yk, xk, ym, xm, dx, dy, xorg, yorg;
-    int slw;
-    miFillArcRec info;
-
-    (*infoRec->SetupForSolidFill)(infoRec->pScrn, pGC->fgPixel, pGC->alu,
-		pGC->planemask);
-
-    miFillArcSetup(arc, &info);
-    MIFILLARCSETUP();
-    if (pGC->miTranslate)
-    {
-	xorg += pDraw->x;
-	yorg += pDraw->y;
-    }
-    while (y > 0)
-    {
-	MIFILLARCSTEP(slw);
-	if (slw > 0) {
-	    (*infoRec->SubsequentSolidFillRect)(infoRec->pScrn, xorg - x,
-		    yorg - y, slw, 1);
-            if (miFillArcLower(slw))
-		(*infoRec->SubsequentSolidFillRect)(infoRec->pScrn,
-			xorg - x, yorg + y + dy, slw, 1);
-	}
-    }
-
-    SET_SYNC_FLAG(infoRec);
-}
-
-
-#define ADDSPAN(l,r) \
-    if (r >= l) \
-	(*infoRec->SubsequentSolidFillRect)( \
-	    infoRec->pScrn, l, ya, r - l + 1, 1);
-
-#define ADDSLICESPANS(flip) \
-    if (!flip) \
-    { \
-	ADDSPAN(xl, xr); \
-    } \
-    else \
-    { \
-	xc = xorg - x; \
-	ADDSPAN(xc, xr); \
-	xc += slw - 1; \
-	ADDSPAN(xl, xc); \
-    }
-
-static void
-XAAFillArcSliceSolid(DrawablePtr pDraw, GCPtr pGC, xArc *arc)
-{ 
-    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
-    int yk, xk, ym, xm, dx, dy, xorg, yorg, slw;
-    register int x, y, e;
-    miFillArcRec info;
-    miArcSliceRec slice;
-    int ya, xl, xr, xc;
-
-    (*infoRec->SetupForSolidFill)(infoRec->pScrn, pGC->fgPixel, pGC->alu,
-        pGC->planemask);
-
-    miFillArcSetup(arc, &info);
-    miFillArcSliceSetup(arc, &slice, pGC);
-    MIFILLARCSETUP();
-    slw = arc->height;
-    if (slice.flip_top || slice.flip_bot)
-	slw += (arc->height >> 1) + 1;
-    if (pGC->miTranslate)
-    {
-	xorg += pDraw->x;
-	yorg += pDraw->y;
-	slice.edge1.x += pDraw->x;
-	slice.edge2.x += pDraw->x;
-    }
-    while (y > 0)
-    {
-	MIFILLARCSTEP(slw);
-	MIARCSLICESTEP(slice.edge1);
-	MIARCSLICESTEP(slice.edge2);
-	if (miFillSliceUpper(slice))
-	{
-	    ya = yorg - y;
-	    MIARCSLICEUPPER(xl, xr, slice, slw);
-	    
-	    ADDSLICESPANS(slice.flip_top);
-	}
-	if (miFillSliceLower(slice))
-	{
-	    ya = yorg + y + dy;
-	    MIARCSLICELOWER(xl, xr, slice, slw);
-	    ADDSLICESPANS(slice.flip_bot);
-	}
-    }
-
-    SET_SYNC_FLAG(infoRec);
-}
-
-
-void
-XAAPolyFillArcSolid(DrawablePtr pDraw, GCPtr pGC, int narcs, xArc *parcs)
-{
-    register xArc *arc;
-    register int i;
-    int x2, y2;
-    BoxRec box;
-    RegionPtr cclip;
-
-    cclip = pGC->pCompositeClip;
-
-    if(!RegionNumRects(cclip))
-	return;
-
-    for (arc = parcs, i = narcs; --i >= 0; arc++)
-    {
-	if (miFillArcEmpty(arc))
-	    continue;
-	if (miCanFillArc(arc))
-	{
-	    box.x1 = arc->x + pDraw->x;
-	    box.y1 = arc->y + pDraw->y;
- 	    /*
- 	     * Because box.x2 and box.y2 get truncated to 16 bits, and the
- 	     * RECT_IN_REGION test treats the resulting number as a signed
- 	     * integer, the RECT_IN_REGION test alone can go the wrong way.
- 	     * This can result in a server crash because the rendering
- 	     * routines in this file deal directly with cpu addresses
- 	     * of pixels to be stored, and do not clip or otherwise check
- 	     * that all such addresses are within their respective pixmaps.
- 	     * So we only allow the RECT_IN_REGION test to be used for
- 	     * values that can be expressed correctly in a signed short.
- 	     */
- 	    x2 = box.x1 + (int)arc->width + 1;
- 	    box.x2 = x2;
- 	    y2 = box.y1 + (int)arc->height + 1;
- 	    box.y2 = y2;
- 	    if ( (x2 <= SHRT_MAX) && (y2 <= SHRT_MAX) &&
-		    (RegionContainsRect(cclip, &box) == rgnIN) )
-	    {
-		if ((arc->angle2 >= FULLCIRCLE) ||
-		    (arc->angle2 <= -FULLCIRCLE))
-		    XAAFillEllipseSolid(pDraw, pGC, arc);
-		else
-		    XAAFillArcSliceSolid(pDraw, pGC, arc);
-		continue;
-	    }
-	}
-	miPolyFillArc(pDraw, pGC, 1, arc);
-    }
-}
+/*
+ * Copyright 1996  The XFree86 Project
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a 
+ * copy of this software and associated documentation files (the "Software"), 
+ * to deal in the Software without restriction, including without limitation 
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+ * and/or sell copies of the Software, and to permit persons to whom the 
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * 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 
+ * HARM HANEMAAYER 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.
+ * 
+ * Written by Harm Hanemaayer (H.Hanemaayer@inter.nl.net).
+ */
+
+/*
+ * Filled solid arcs, based on cfbfillarc.c.
+ *
+ * Fill arc using calls to low-level span fill. Because the math for
+ * each span can be done concurrently with the drawing of the span
+ * with a graphics coprocessor operation, this is faster than just
+ * using miPolyFillArc, which first calculates all the spans and then
+ * calls FillSpans.
+ *
+ * Clipped arcs are dispatched to FillSpans.
+ */
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <limits.h>
+
+#include "misc.h"
+#include "xf86.h"
+#include "xf86_OSproc.h"
+
+#include <X11/X.h>
+#include "scrnintstr.h"
+#include "pixmapstr.h"
+#include "xf86str.h"
+#include "xaa.h"
+#include "xaalocal.h"
+#include "mifillarc.h"
+#include "mi.h"
+
+/*
+ * This is based on the integer-math versions from mi. Perhaps on a
+ * Pentium, the floating-point (double)-math version is faster.
+ */
+
+static void
+XAAFillEllipseSolid(DrawablePtr pDraw, GCPtr pGC, xArc * arc)
+{
+    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+    register int x, y, e;
+    int yk, xk, ym, xm, dx, dy, xorg, yorg;
+    int slw;
+    miFillArcRec info;
+
+    (*infoRec->SetupForSolidFill) (infoRec->pScrn, pGC->fgPixel, pGC->alu,
+                                   pGC->planemask);
+
+    miFillArcSetup(arc, &info);
+    MIFILLARCSETUP();
+    if (pGC->miTranslate) {
+        xorg += pDraw->x;
+        yorg += pDraw->y;
+    }
+    while (y > 0) {
+        MIFILLARCSTEP(slw);
+        if (slw > 0) {
+            (*infoRec->SubsequentSolidFillRect) (infoRec->pScrn, xorg - x,
+                                                 yorg - y, slw, 1);
+            if (miFillArcLower(slw))
+                (*infoRec->SubsequentSolidFillRect) (infoRec->pScrn,
+                                                     xorg - x, yorg + y + dy,
+                                                     slw, 1);
+        }
+    }
+
+    SET_SYNC_FLAG(infoRec);
+}
+
+#define ADDSPAN(l,r) \
+    if (r >= l) \
+	(*infoRec->SubsequentSolidFillRect)( \
+	    infoRec->pScrn, l, ya, r - l + 1, 1);
+
+#define ADDSLICESPANS(flip) \
+    if (!flip) \
+    { \
+	ADDSPAN(xl, xr); \
+    } \
+    else \
+    { \
+	xc = xorg - x; \
+	ADDSPAN(xc, xr); \
+	xc += slw - 1; \
+	ADDSPAN(xl, xc); \
+    }
+
+static void
+XAAFillArcSliceSolid(DrawablePtr pDraw, GCPtr pGC, xArc * arc)
+{
+    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
+    int yk, xk, ym, xm, dx, dy, xorg, yorg, slw;
+    register int x, y, e;
+    miFillArcRec info;
+    miArcSliceRec slice;
+    int ya, xl, xr, xc;
+
+    (*infoRec->SetupForSolidFill) (infoRec->pScrn, pGC->fgPixel, pGC->alu,
+                                   pGC->planemask);
+
+    miFillArcSetup(arc, &info);
+    miFillArcSliceSetup(arc, &slice, pGC);
+    MIFILLARCSETUP();
+    slw = arc->height;
+    if (slice.flip_top || slice.flip_bot)
+        slw += (arc->height >> 1) + 1;
+    if (pGC->miTranslate) {
+        xorg += pDraw->x;
+        yorg += pDraw->y;
+        slice.edge1.x += pDraw->x;
+        slice.edge2.x += pDraw->x;
+    }
+    while (y > 0) {
+        MIFILLARCSTEP(slw);
+        MIARCSLICESTEP(slice.edge1);
+        MIARCSLICESTEP(slice.edge2);
+        if (miFillSliceUpper(slice)) {
+            ya = yorg - y;
+            MIARCSLICEUPPER(xl, xr, slice, slw);
+
+            ADDSLICESPANS(slice.flip_top);
+        }
+        if (miFillSliceLower(slice)) {
+            ya = yorg + y + dy;
+            MIARCSLICELOWER(xl, xr, slice, slw);
+            ADDSLICESPANS(slice.flip_bot);
+        }
+    }
+
+    SET_SYNC_FLAG(infoRec);
+}
+
+void
+XAAPolyFillArcSolid(DrawablePtr pDraw, GCPtr pGC, int narcs, xArc * parcs)
+{
+    register xArc *arc;
+    register int i;
+    int x2, y2;
+    BoxRec box;
+    RegionPtr cclip;
+
+    cclip = pGC->pCompositeClip;
+
+    if (!RegionNumRects(cclip))
+        return;
+
+    for (arc = parcs, i = narcs; --i >= 0; arc++) {
+        if (miFillArcEmpty(arc))
+            continue;
+        if (miCanFillArc(arc)) {
+            box.x1 = arc->x + pDraw->x;
+            box.y1 = arc->y + pDraw->y;
+            /*
+             * Because box.x2 and box.y2 get truncated to 16 bits, and the
+             * RECT_IN_REGION test treats the resulting number as a signed
+             * integer, the RECT_IN_REGION test alone can go the wrong way.
+             * This can result in a server crash because the rendering
+             * routines in this file deal directly with cpu addresses
+             * of pixels to be stored, and do not clip or otherwise check
+             * that all such addresses are within their respective pixmaps.
+             * So we only allow the RECT_IN_REGION test to be used for
+             * values that can be expressed correctly in a signed short.
+             */
+            x2 = box.x1 + (int) arc->width + 1;
+            box.x2 = x2;
+            y2 = box.y1 + (int) arc->height + 1;
+            box.y2 = y2;
+            if ((x2 <= SHRT_MAX) && (y2 <= SHRT_MAX) &&
+                (RegionContainsRect(cclip, &box) == rgnIN)) {
+                if ((arc->angle2 >= FULLCIRCLE) || (arc->angle2 <= -FULLCIRCLE))
+                    XAAFillEllipseSolid(pDraw, pGC, arc);
+                else
+                    XAAFillArcSliceSolid(pDraw, pGC, arc);
+                continue;
+            }
+        }
+        miPolyFillArc(pDraw, pGC, 1, arc);
+    }
+}