xserver git update 11/6/2010

1 files changed, 921 insertions, 921 deletions

diff --git a/xorg-server/hw/xfree86/xaa/xaaWideLine.c b/xorg-server/hw/xfree86/xaa/xaaWideLine.c
index a684d6676..f73e04f17 100644
--- a/xorg-server/hw/xfree86/xaa/xaaWideLine.c
+++ b/xorg-server/hw/xfree86/xaa/xaaWideLine.c
@@ -1,921 +1,921 @@
-/*
-
-XAAPolylinesWideSolid does not maintain a span list and subsequently does
-not follow the "touch-each-pixel-once" rules for wide lines and arcs.
-This means it can only be used in the case where we have
-miSpansEasyRop(pGC->alu).  Since we clip spans on the fly, we
-limited usage of this function to one rect situations. This
-function is used only for solid lines. 
-
-  Adapted from miWideLine by Mark Vojkovich (mvojkovi@ucsd.edu)
-Original mi code written by Keith Packard.
-
-*/
-
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#include <math.h>
-
-#include "misc.h"
-#include "xf86.h"
-#include "xf86_OSproc.h"
-
-#include <X11/X.h>
-#include "windowstr.h"
-#include "gcstruct.h"
-#include "regionstr.h"
-#include "miwideline.h"
-#include "mi.h"
-#include "xf86str.h"
-#include "xaa.h"
-#include "xaalocal.h"
-
-#define DRAW_POINT(pScrn, x, y) \
-  if(hardClip) (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, 1, 1); \
-  else XAAPointHelper(pScrn, x, y)
-
-#define FILL_RECT(pScrn, x, y, w, h) \
-  if(hardClip) (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, w, h); \
-  else XAAFillRectHelper(pScrn, x, y, w, h)
-
-#define FILL_SPAN(pScrn, x, y, w) \
-  if(hardClip) (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, w, 1); \
-  else XAASpanHelper(pScrn, x, y, w)
-
-
-#define CLIPSTEPEDGE(edgey,edge,edgeleft) \
-    if (ybase == edgey) { \
-	if (edgeleft) { \
-	    if (edge->x > xcl) \
-		xcl = edge->x; \
-	} else { \
-	    if (edge->x < xcr) \
-		xcr = edge->x; \
-	} \
-	edgey++; \
-	edge->x += edge->stepx; \
-	edge->e += edge->dx; \
-	if (edge->e > 0) { \
-	    edge->x += edge->signdx; \
-	    edge->e -= edge->dy; \
-	} \
-    }
-
-static void 
-XAAPointHelper(ScrnInfoPtr pScrn, int x, int y)
-{
-   XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
-   BoxPtr extents = infoRec->ClipBox;
-
-   if((x >= extents->x1) && (x < extents->x2) &&
-	(y >= extents->y1) && (y < extents->y2))
-	(*infoRec->SubsequentSolidFillRect)(pScrn, x, y, 1, 1);
-}
-
-static void 
-XAAFillRectHelper(ScrnInfoPtr pScrn, int x1, int y1, int dx, int dy)
-{
-   XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
-   BoxPtr extents = infoRec->ClipBox;
-   int x2 = x1 + dx;
-   int y2 = y1 + dy;
-	
-   if(x1 < extents->x1) x1 = extents->x1;
-   if(x2 >= extents->x2) x2 = extents->x2;
-   if((dx = x2 - x1)<1) return;
-   if(y1 < extents->y1) y1 = extents->y1;
-   if(y2 >= extents->y2) y2 = extents->y2;
-   if((dy = y2 - y1)<1) return;
-
-   (*infoRec->SubsequentSolidFillRect)(pScrn, x1, y1, dx, dy);
-}
-
-
-static void 
-XAASpanHelper(ScrnInfoPtr pScrn, int x1, int y, int width)
-{
-   XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);
-   BoxPtr extents = infoRec->ClipBox;
-    int x2;
-
-    if((y < extents->y1) || (y >= extents->y2)) return;
-
-    x2 = x1 + width;
-    if(x1 < extents->x1) x1 = extents->x1;
-    if(x2 > extents->x2) x2 = extents->x2;
-    width = x2 - x1;	
-
-    if(width > 0)	
- 	(*infoRec->SubsequentSolidFillRect)(pScrn, x1, y, width, 1);
-
-}
-
-#define FixError(x, dx, dy, e, sign, step, h)	{	\
-	   e += (h) * dx;				\
-	   x += (h) * step;				\
-	   if(e > 0) {					\
-		x += e * sign/dy;			\
-		e %= dy;				\
-	   	if(e) {					\
-		   x += sign;				\
-		   e -= dy;				\
-		}					\
-	   } 	 					\
-}
-
-
-static void
-XAAFillPolyHelper (
-    GCPtr	pGC,
-    int		y,			/* start y coordinate */
-    int		overall_height,		/* height of entire segment */
-    PolyEdgePtr	left, PolyEdgePtr right,
-    int	left_count, int right_count )
-{
-    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
-    BoxPtr extents = infoRec->ClipBox;
-    int left_x, left_e, left_stepx, left_signdx, left_dy, left_dx;
-    int right_x, right_e, right_stepx, right_signdx, right_dy, right_dx;
-    int	height, left_height, right_height;
-    int	xorg;
-    Bool hardClip;
-
-    if((y >= extents->y2) || ((y + overall_height) <= extents->y1))
-	return;
-
-    /* Muffle compiler */
-    left_x = left_e = left_stepx = left_signdx = left_dy = left_dx = 0;
-    right_x = right_e = right_stepx = right_signdx = right_dy = right_dx = 0;
-
-    left_height = right_height = 0;
-    xorg = 0;
-
-    hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);
-    
-    while ((left_count || left_height) && (right_count || right_height)) {
-  	if (!left_height && left_count) { 
-	    left_height = left->height; 
-	    left_x = left->x + xorg; 
-	    left_stepx = left->stepx; 
-	    left_signdx = left->signdx; 
-	    left_e = left->e; 
-	    left_dy = left->dy; 
-	    left_dx = left->dx; 
-	    left_count--; 
-	    left++;
-	}
-	if (!right_height && right_count) { 
-	    right_height = right->height; 
-	    right_x = right->x + xorg + 1; 
-	    right_stepx = right->stepx; 
-	    right_signdx = right->signdx; 
-	    right_e = right->e; 
-	    right_dy = right->dy; 
-	    right_dx = right->dx; 
-	    right_count--; 
-	    right++; 
-	}
-
-	height = (left_height > right_height) ? right_height : left_height;
-
-	left_height -= height;
-	right_height -= height;
-
-	if(hardClip && infoRec->SubsequentSolidFillTrap && (height > 6)) {
-	    int right_DX, left_DX;
-
-    	    right_DX = (right_dx * right_signdx) + (right_stepx * right_dy);
-	    left_DX = (left_dx * left_signdx) + (left_stepx * left_dy);
-
-	    (*infoRec->SubsequentSolidFillTrap)(infoRec->pScrn, y, height, 
-			left_x, left_DX, left_dy, left_e, 
-			right_x - 1, right_DX, right_dy, right_e);
-
-	    FixError(left_x, left_dx, left_dy, left_e, left_signdx, 
-			left_stepx, height);
-	    FixError(right_x, right_dx, right_dy, right_e, right_signdx,
-			right_stepx, height);
-	    y += height;
-	    continue;
-	}
-
-	while (height--) {
-	    if(right_x > left_x) {
-		FILL_SPAN(infoRec->pScrn, left_x, y, right_x - left_x);
-	    }
-    	    y++;
-    	
- 	    left_x += left_stepx; 
-	    left_e += left_dx; 
-	    if (left_e > 0) { 
-		left_x += left_signdx; 
-		left_e -= left_dy; 
-	    }
-	    right_x += right_stepx; 
-	    right_e += right_dx; 
-	    if (right_e > 0) { 
-		right_x += right_signdx; 
-		right_e -= right_dy; 
-	    }
-
-	}
-    }
-}
-
-
-
-static void
-XAAWideSegment (
-    GCPtr pGC,
-    int  x1, int y1, int x2, int y2,
-    Bool projectLeft, Bool projectRight,
-    LineFacePtr leftFace, LineFacePtr rightFace )
-{
-    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
-    double	l, L, r;
-    double	xa, ya;
-    double	projectXoff, projectYoff;
-    double	k;
-    double	maxy;
-    int		x, y;
-    int		dx, dy;
-    int		finaly;
-    PolyEdgePtr left, right;
-    PolyEdgePtr	top, bottom;
-    int		lefty, righty, topy, bottomy;
-    int		signdx;
-    PolyEdgeRec	lefts[2], rights[2];
-    LineFacePtr	tface;
-    int		lw = pGC->lineWidth;
-    Bool	hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);
-
-    /* draw top-to-bottom always */
-    if ((y2 < y1) || ((y2 == y1) && (x2 < x1))) {
-	x = x1;
-	x1 = x2;
-	x2 = x;
-
-	y = y1;
-	y1 = y2;
-	y2 = y;
-
-	x = projectLeft;
-	projectLeft = projectRight;
-	projectRight = x;
-
-	tface = leftFace;
-	leftFace = rightFace;
-	rightFace = tface;
-    }
-
-    dy = y2 - y1;
-    signdx = 1;
-    dx = x2 - x1;
-    if (dx < 0)
-	signdx = -1;
-
-    leftFace->x = x1;
-    leftFace->y = y1;
-    leftFace->dx = dx;
-    leftFace->dy = dy;
-
-    rightFace->x = x2;
-    rightFace->y = y2;
-    rightFace->dx = -dx;
-    rightFace->dy = -dy;
-
-    if (!dy) {
-	rightFace->xa = 0;
-	rightFace->ya = (double) lw / 2.0;
-	rightFace->k = -(double) (lw * dx) / 2.0;
-	leftFace->xa = 0;
-	leftFace->ya = -rightFace->ya;
-	leftFace->k = rightFace->k;
-	x = x1;
-	if (projectLeft)
-	    x -= (lw >> 1);
-	y = y1 - (lw >> 1);
-	dx = x2 - x;
-	if (projectRight)
-	    dx += ((lw + 1) >> 1);
-	dy = lw;
-	FILL_RECT(infoRec->pScrn, x, y, dx, dy);	
-    } else if (!dx) {
-	leftFace->xa =  (double) lw / 2.0;
-	leftFace->ya = 0;
-	leftFace->k = (double) (lw * dy) / 2.0;
-	rightFace->xa = -leftFace->xa;
-	rightFace->ya = 0;
-	rightFace->k = leftFace->k;
-	y = y1;
-	if (projectLeft)
-	    y -= lw >> 1;
-	x = x1 - (lw >> 1);
-	dy = y2 - y;
-	if (projectRight)
-	    dy += ((lw + 1) >> 1);
-	dx = lw;
- 	FILL_RECT(infoRec->pScrn, x, y, dx, dy);
-    } else {
-    	l = ((double) lw) / 2.0;
-    	L = sqrt((double)(dx*dx + dy*dy));
-
-	if (dx < 0) {
-	    right = &rights[1];
-	    left = &lefts[0];
-	    top = &rights[0];
-	    bottom = &lefts[1];
-	} else {
-	    right = &rights[0];
-	    left = &lefts[1];
-	    top = &lefts[0];
-	    bottom = &rights[1];
-	}
-	r = l / L;
-
-	/* coord of upper bound at integral y */
-	ya = -r * dx;
-	xa = r * dy;
-
-	projectXoff = -ya;
-	projectYoff = xa;
-
-    	/* xa * dy - ya * dx */
-	k = l * L;
-
-	leftFace->xa = xa;
-	leftFace->ya = ya;
-	leftFace->k = k;
-	rightFace->xa = -xa;
-	rightFace->ya = -ya;
-	rightFace->k = k;
-
-	if (projectLeft)
-	    righty = miPolyBuildEdge (xa - projectXoff, ya - projectYoff,
-				      k, dx, dy, x1, y1, 0, right);
-	else
-	    righty = miPolyBuildEdge (xa, ya,
-				      k, dx, dy, x1, y1, 0, right);
-
-	/* coord of lower bound at integral y */
-	ya = -ya;
-	xa = -xa;
-
-	/* xa * dy - ya * dx */
-	k = - k;
-
-	if (projectLeft)
-	    lefty = miPolyBuildEdge (xa - projectXoff, ya - projectYoff,
-				     k, dx, dy, x1, y1, 1, left);
-	else
-	    lefty = miPolyBuildEdge (xa, ya,
-				     k, dx, dy, x1, y1, 1, left);
-
-	/* coord of top face at integral y */
-
-	if (signdx > 0) {
-	    ya = -ya;
-	    xa = -xa;
-	}
-
-	if (projectLeft) {
-	    double xap = xa - projectXoff;
-	    double yap = ya - projectYoff;
-	    topy = miPolyBuildEdge (xap, yap, xap * dx + yap * dy,
-				    -dy, dx, x1, y1, dx > 0, top);
-	}
-	else
-	    topy = miPolyBuildEdge(xa, ya, 0.0, 
-					-dy, dx, x1, y1, dx > 0, top);
-
-		/* coord of bottom face at integral y */
-
-	if (projectRight) {
-	    double xap = xa + projectXoff;
-	    double yap = ya + projectYoff;
-	    bottomy = miPolyBuildEdge (xap, yap, xap * dx + yap * dy,
-				       -dy, dx, x2, y2, dx < 0, bottom);
-	    maxy = -ya + projectYoff;
-	} else {
-	    bottomy = miPolyBuildEdge (xa, ya, 0.0,
-					-dy, dx, x2, y2, dx < 0, bottom);
-	    maxy = -ya;
-	}
-
-	finaly = ICEIL (maxy) + y2;
-
-	if (dx < 0) {
-	    left->height = bottomy - lefty;
-	    right->height = finaly - righty;
-	    top->height = righty - topy;
-	} else {
-	    right->height =  bottomy - righty;
-	    left->height = finaly - lefty;
-	    top->height = lefty - topy;
-	}
-	bottom->height = finaly - bottomy;
-	XAAFillPolyHelper (pGC, topy, 
-		bottom->height + bottomy - topy, lefts, rights, 2, 2);
-    }
-}
-
-
-static void
-XAALineArcI (GCPtr pGC, int xorg, int yorg)
-{
-    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
-    int x, y, e, ex;
-    int slw = pGC->lineWidth;
-    Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);
-
-    y = (slw >> 1) + 1;
-    if (slw & 1)
-	e = - ((y << 2) + 3);
-    else
-	e = - (y << 3);
-    ex = -4;
-    x = 0;
-    while (y) {
-	e += (y << 3) - 4;
-	while (e >= 0) {
-	    x++;
-	    e += (ex = -((x << 3) + 4));
-	}
-	y--;
-	slw = (x << 1) + 1;
-	if ((e == ex) && (slw > 1))
-	    slw--;
-	    
-	FILL_SPAN(infoRec->pScrn, xorg - x, yorg - y, slw);
-
-	if ((y != 0) && ((slw > 1) || (e != ex))) {	
-	    FILL_SPAN(infoRec->pScrn, xorg - x, yorg + y, slw);
-	}
-    }
-}
-
-
-static void
-XAALineArcD (
-    GCPtr	    pGC,
-    double	    xorg,
-    double	    yorg,
-    PolyEdgePtr	    edge1, 
-    int		    edgey1,
-    Bool	    edgeleft1,
-    PolyEdgePtr	    edge2,
-    int		    edgey2,
-    Bool	    edgeleft2 )
-{
-    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
-    double radius, x0, y0, el, er, yk, xlk, xrk, k;
-    int xbase, ybase, y, boty, xl, xr, xcl, xcr;
-    int ymin, ymax;
-    Bool edge1IsMin, edge2IsMin;
-    int ymin1, ymin2;
-    Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);
-
-
-    xbase = floor(xorg);
-    x0 = xorg - xbase;
-    ybase = ICEIL (yorg);
-    y0 = yorg - ybase;
-
-    xlk = x0 + x0 + 1.0;
-    xrk = x0 + x0 - 1.0;
-    yk = y0 + y0 - 1.0;
-    radius = ((double)pGC->lineWidth) / 2.0;
-    y = floor(radius - y0 + 1.0);
-    ybase -= y;
-    ymin = ybase;
-    ymax = 65536;
-    edge1IsMin = FALSE;
-    ymin1 = edgey1;
-    if (edge1->dy >= 0) {
-    	if (!edge1->dy) {
-	    if (edgeleft1)
-	    	edge1IsMin = TRUE;
-	    else
-	    	ymax = edgey1;
-	    edgey1 = 65536;
-    	} else if ((edge1->signdx < 0) == edgeleft1)
-	    	edge1IsMin = TRUE;
-    }
-    edge2IsMin = FALSE;
-    ymin2 = edgey2;
-    if (edge2->dy >= 0) {
-    	if (!edge2->dy) {
-	    if (edgeleft2)
-	    	edge2IsMin = TRUE;
-	    else
-	    	ymax = edgey2;
-	    edgey2 = 65536;
-    	} else if ((edge2->signdx < 0) == edgeleft2)
-	    	edge2IsMin = TRUE;
-    }
-    if (edge1IsMin) {
-	ymin = ymin1;
-	if (edge2IsMin && (ymin1 > ymin2))
-	    ymin = ymin2;
-    } else if (edge2IsMin)
-	ymin = ymin2;
-    el = radius * radius - ((y + y0) * (y + y0)) - (x0 * x0);
-    er = el + xrk;
-    xl = 1;
-    xr = 0;
-    if (x0 < 0.5) {
-	xl = 0;
-	el -= xlk;
-    }
-    boty = (y0 < -0.5) ? 1 : 0;
-    if (ybase + y - boty > ymax)
-	boty = ymax - ybase - y;
-    while (y > boty) {
-	k = (y << 1) + yk;
-	er += k;
-	while (er > 0.0) {
-	    xr++;
-	    er += xrk - (xr << 1);
-	}
-	el += k;
-	while (el >= 0.0) {
-	    xl--;
-	    el += (xl << 1) - xlk;
-	}
-	y--;
-	ybase++;
-	if (ybase < ymin)
-	    continue;
-	xcl = xl + xbase;
-	xcr = xr + xbase;
-	CLIPSTEPEDGE(edgey1, edge1, edgeleft1);
-	CLIPSTEPEDGE(edgey2, edge2, edgeleft2);
-	if(xcr >= xcl) {
-	    FILL_SPAN(infoRec->pScrn, xcl, ybase, xcr - xcl + 1);
-	}
-    }
-    er = xrk - (xr << 1) - er;
-    el = (xl << 1) - xlk - el;
-    boty = floor(-y0 - radius + 1.0);
-    if (ybase + y - boty > ymax)
-	boty = ymax - ybase - y;
-    while (y > boty) {
-	k = (y << 1) + yk;
-	er -= k;
-	while ((er >= 0.0) && (xr >= 0)) {
-	    xr--;
-	    er += xrk - (xr << 1);
-	}
-	el -= k;
-	while ((el > 0.0) && (xl <= 0)) {
-	    xl++;
-	    el += (xl << 1) - xlk;
-	}
-	y--;
-	ybase++;
-	if (ybase < ymin)
-	    continue;
-	xcl = xl + xbase;
-	xcr = xr + xbase;
-	CLIPSTEPEDGE(edgey1, edge1, edgeleft1);
-	CLIPSTEPEDGE(edgey2, edge2, edgeleft2);
-	if(xcr >= xcl) {
-	    FILL_SPAN(infoRec->pScrn, xcl, ybase, xcr - xcl + 1);
-	}
-    }
-}
-
-
-static void
-XAALineArc (
-    GCPtr  pGC,
-    LineFacePtr leftFace,
-    LineFacePtr rightFace,
-    double	xorg,
-    double	yorg,
-    Bool	isInt )
-{
-    int xorgi, yorgi;
-    PolyEdgeRec	edge1, edge2;
-    int		edgey1, edgey2;
-    Bool	edgeleft1, edgeleft2;
-
-    if (isInt) {
-	xorgi = leftFace ? leftFace->x : rightFace->x;
-	yorgi = leftFace ? leftFace->y : rightFace->y;
-    } else {	/* Muffle compiler */
-        xorgi = yorgi = 0;
-    }
-    edgey1 = 65536;
-    edgey2 = 65536;
-    edge1.x = 0; /* not used, keep memory checkers happy */
-    edge1.dy = -1;
-    edge2.x = 0; /* not used, keep memory checkers happy */
-    edge2.dy = -1;
-    edgeleft1 = FALSE;
-    edgeleft2 = FALSE;
-
-    if ((pGC->lineWidth > 2) &&
-	((pGC->capStyle == CapRound && pGC->joinStyle != JoinRound) ||
-	 (pGC->joinStyle == JoinRound && pGC->capStyle == CapButt))) {
-	if (isInt) {
-	    xorg = (double) xorgi;
-	    yorg = (double) yorgi;
-	}
-
-	if (leftFace && rightFace) 
-	    miRoundJoinClip (leftFace, rightFace, &edge1, &edge2,
-			     &edgey1, &edgey2, &edgeleft1, &edgeleft2);
-	else if (leftFace)
-	    edgey1 = miRoundCapClip (leftFace, isInt, &edge1, &edgeleft1);
-	else if (rightFace)
-	    edgey2 = miRoundCapClip (rightFace, isInt, &edge2, &edgeleft2);
-
-	isInt = FALSE;
-    }
-
-    if (isInt) {
-	if(pGC->lineWidth == 1) {
-	    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
-	    Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);
-	    DRAW_POINT(infoRec->pScrn, xorgi, yorgi);
-	} else
-	    XAALineArcI(pGC, xorgi, yorgi);
-    } else
-	XAALineArcD(pGC, xorg, yorg, &edge1, edgey1, edgeleft1,
-		       &edge2, edgey2, edgeleft2);
-
-}
-
-
-static void
-XAALineJoin (
-    GCPtr	    pGC,
-    LineFacePtr     pLeft,
-    LineFacePtr     pRight )
-{
-    double	    mx = 0, my = 0;
-    double	    denom = 0;
-    PolyVertexRec   vertices[4];
-    PolySlopeRec    slopes[4];
-    int		    edgecount;
-    PolyEdgeRec	    left[4], right[4];
-    int		    nleft, nright;
-    int		    y, height;
-    int		    swapslopes;
-    int		    joinStyle = pGC->joinStyle;
-    int		    lw = pGC->lineWidth;
-
-    if (lw == 1) {
-	/* Lines going in the same direction have no join */
-	if ((pLeft->dx >= 0) == (pRight->dx <= 0))
-	    return;
-	if (joinStyle != JoinRound) {
-    	    denom = - pLeft->dx * (double)pRight->dy + pRight->dx *
- 					(double)pLeft->dy;
-    	    if (denom == 0.0)
-	    	return;	/* no join to draw */
-	}
-	if (joinStyle != JoinMiter) {
-	    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
-	    Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);
-	    DRAW_POINT(infoRec->pScrn, pLeft->x, pLeft->y);	
-	    return;
-	}
-    } else {
-    	if (joinStyle == JoinRound) {
-	    XAALineArc(pGC, pLeft, pRight,(double)0.0, (double)0.0, TRUE);
-	    return;
-    	}
-    	denom = - pLeft->dx * (double)pRight->dy + pRight->dx * 
-				(double)pLeft->dy;
-    	if (denom == 0.0)
-	    return;	/* no join to draw */
-    }
-
-    swapslopes = 0;
-    if (denom > 0) {
-	pLeft->xa = -pLeft->xa;
-	pLeft->ya = -pLeft->ya;
-	pLeft->dx = -pLeft->dx;
-	pLeft->dy = -pLeft->dy;
-    } else {
-	swapslopes = 1;
-	pRight->xa = -pRight->xa;
-	pRight->ya = -pRight->ya;
-	pRight->dx = -pRight->dx;
-	pRight->dy = -pRight->dy;
-    }
-
-    vertices[0].x = pRight->xa;
-    vertices[0].y = pRight->ya;
-    slopes[0].dx = -pRight->dy;
-    slopes[0].dy =  pRight->dx;
-    slopes[0].k = 0;
-
-    vertices[1].x = 0;
-    vertices[1].y = 0;
-    slopes[1].dx =  pLeft->dy;
-    slopes[1].dy = -pLeft->dx;
-    slopes[1].k = 0;
-
-    vertices[2].x = pLeft->xa;
-    vertices[2].y = pLeft->ya;
-
-    if (joinStyle == JoinMiter) {
-    	my = (pLeft->dy  * (pRight->xa * pRight->dy - pRight->ya * pRight->dx) -
-              pRight->dy * (pLeft->xa  * pLeft->dy  - pLeft->ya  * pLeft->dx ))/
-	      denom;
-    	if (pLeft->dy != 0) 
-	    mx = pLeft->xa + (my - pLeft->ya) *
-			    (double) pLeft->dx / (double) pLeft->dy;
-    	else
-	    mx = pRight->xa + (my - pRight->ya) *
-			    (double) pRight->dx / (double) pRight->dy;
-    	
-	/* check miter limit */
-	if ((mx * mx + my * my) * 4 > SQSECANT * lw * lw)
-	    joinStyle = JoinBevel;
-    }
-
-    if (joinStyle == JoinMiter) {
-	slopes[2].dx = pLeft->dx;
-	slopes[2].dy = pLeft->dy;
-	slopes[2].k =  pLeft->k;
-	if (swapslopes) {
-	    slopes[2].dx = -slopes[2].dx;
-	    slopes[2].dy = -slopes[2].dy;
-	    slopes[2].k  = -slopes[2].k;
-	}
-	vertices[3].x = mx;
-	vertices[3].y = my;
-	slopes[3].dx = pRight->dx;
-	slopes[3].dy = pRight->dy;
-	slopes[3].k  = pRight->k;
-	if (swapslopes) {
-	    slopes[3].dx = -slopes[3].dx;
-	    slopes[3].dy = -slopes[3].dy;
-	    slopes[3].k  = -slopes[3].k;
-	}
-	edgecount = 4;
-    } else {
-	double	scale, dx, dy, adx, ady;
-
-	adx = dx = pRight->xa - pLeft->xa;
-	ady = dy = pRight->ya - pLeft->ya;
-	if (adx < 0)
-	    adx = -adx;
-	if (ady < 0)
-	    ady = -ady;
-	scale = ady;
-	if (adx > ady)
-	    scale = adx;
-	slopes[2].dx = (dx * 65536) / scale;
-	slopes[2].dy = (dy * 65536) / scale;
-	slopes[2].k = ((pLeft->xa + pRight->xa) * slopes[2].dy -
-		       (pLeft->ya + pRight->ya) * slopes[2].dx) / 2.0;
-	edgecount = 3;
-    }
-
-    y = miPolyBuildPoly (vertices, slopes, edgecount, pLeft->x, pLeft->y,
-		   left, right, &nleft, &nright, &height);
-    XAAFillPolyHelper(pGC, y, height, left, right, nleft, nright);
-}
-
-
-void
-XAAPolylinesWideSolid (
-   DrawablePtr  pDrawable,
-   GCPtr        pGC,
-   int          mode,
-   int          npt,
-   DDXPointPtr  pPts )
-{
-    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);
-    int		    x1, y1, x2, y2;
-    Bool	    projectLeft, projectRight;
-    LineFaceRec	    leftFace, rightFace, prevRightFace, firstFace;
-    int    	    first = TRUE;
-    Bool	    somethingDrawn = FALSE;
-    Bool	    selfJoin = FALSE;
-    int		    xorg = pDrawable->x;
-    int		    yorg = pDrawable->y;
-    Bool	    hardClip = FALSE;
-
-    if(!REGION_NUM_RECTS(pGC->pCompositeClip))
-	return;
-
-    if(REGION_NUM_RECTS(pGC->pCompositeClip) != 1) {
-	miWideLine(pDrawable, pGC, mode, npt, pPts);
-	return;
-    }
-
-    x2 = pPts->x;
-    y2 = pPts->y;
-    if (npt > 1) {
-    	if (mode == CoordModePrevious) {
-	    int nptTmp;
-	    register DDXPointPtr pPtsTmp;
-    
-	    x1 = x2;
-	    y1 = y2;
-	    nptTmp = npt;
-	    pPtsTmp = pPts + 1;
-	    while (--nptTmp) {
-	    	x1 += pPtsTmp->x;
-	    	y1 += pPtsTmp->y;
-	    	++pPtsTmp;
-	    }
-	    if ((x2 == x1) && (y2 == y1))
-	    	selfJoin = TRUE;
-    	} else if ((x2 == pPts[npt-1].x) && (y2 == pPts[npt-1].y)) 
-	    selfJoin = TRUE;
-    }
-
-    projectLeft = ((pGC->capStyle == CapProjecting) && !selfJoin);
-    projectRight = FALSE;
-
-    (*infoRec->SetupForSolidFill)(infoRec->pScrn, pGC->fgPixel, pGC->alu, 
-						pGC->planemask);
-
-    infoRec->ClipBox = &pGC->pCompositeClip->extents;
-
-    if(infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL) {
-	hardClip = TRUE;
-	(*infoRec->SetClippingRectangle)(infoRec->pScrn,
-              infoRec->ClipBox->x1, infoRec->ClipBox->y1, 
-              infoRec->ClipBox->x2 - 1, infoRec->ClipBox->y2 - 1);		
-    }
-
-    x2 += xorg;
-    y2 += yorg;
-    while (--npt) {
-	x1 = x2;
-	y1 = y2;
-	++pPts;
-	x2 = pPts->x;
-	y2 = pPts->y;
-	if (mode == CoordModePrevious) {
-	    x2 += x1;
-	    y2 += y1;
-	} else {
-	    x2 += xorg;
-	    y2 += yorg;
-	}
-	if ((x1 != x2) || (y1 != y2)) {
-	    somethingDrawn = TRUE;
-	    if ((npt == 1) && (pGC->capStyle == CapProjecting) && !selfJoin)
-	    	projectRight = TRUE;
-	    XAAWideSegment(pGC, x1, y1, x2, y2,
-		       	   projectLeft, projectRight, &leftFace, &rightFace);
-	    if (first) {
-	    	if (selfJoin)
-		    firstFace = leftFace;
-	    	else if (pGC->capStyle == CapRound) {
-		    if (pGC->lineWidth == 1) {
-			DRAW_POINT(infoRec->pScrn, x1, y1);
-		    } else
-		        XAALineArc(pGC,&leftFace, (LineFacePtr) NULL,
- 			       	   (double)0.0, (double)0.0,TRUE);
-		}
-	    } else 
-	    	XAALineJoin (pGC, &leftFace, &prevRightFace);
-
-	    prevRightFace = rightFace;
-	    first = FALSE;
-	    projectLeft = FALSE;
-	}
-	if (npt == 1 && somethingDrawn) {
-	    if (selfJoin)
-		XAALineJoin (pGC, &firstFace, &rightFace);
-	    else if (pGC->capStyle == CapRound) {
-		if (pGC->lineWidth == 1) {
-		    DRAW_POINT(infoRec->pScrn, x2, y2);
-		} else
-		    XAALineArc (pGC, (LineFacePtr) NULL, &rightFace,
-			       (double)0.0, (double)0.0,TRUE);
-	    }
-	}
-    }
-    /* handle crock where all points are coincedent */
-    if (!somethingDrawn) {
-	projectLeft = (pGC->capStyle == CapProjecting);
-	XAAWideSegment (pGC, x2, y2, x2, y2, projectLeft, projectLeft,
-		       &leftFace, &rightFace);
-	if (pGC->capStyle == CapRound) {
-	    XAALineArc (pGC, &leftFace, (LineFacePtr) NULL,
-		       (double)0.0, (double)0.0, TRUE);
-	    rightFace.dx = -1;	/* sleezy hack to make it work */
-	    XAALineArc (pGC, (LineFacePtr) NULL, &rightFace,
- 		       (double)0.0, (double)0.0, TRUE);
-	}
-   }
-
-   infoRec->ClipBox = NULL;
-   if(hardClip)
-	(*infoRec->DisableClipping)(infoRec->pScrn);
-
-   SET_SYNC_FLAG(infoRec);
-}
+/*

+

+XAAPolylinesWideSolid does not maintain a span list and subsequently does

+not follow the "touch-each-pixel-once" rules for wide lines and arcs.

+This means it can only be used in the case where we have

+miSpansEasyRop(pGC->alu).  Since we clip spans on the fly, we

+limited usage of this function to one rect situations. This

+function is used only for solid lines. 

+

+  Adapted from miWideLine by Mark Vojkovich (mvojkovi@ucsd.edu)

+Original mi code written by Keith Packard.

+

+*/

+

+#ifdef HAVE_XORG_CONFIG_H

+#include <xorg-config.h>

+#endif

+

+#include <math.h>

+

+#include "misc.h"

+#include "xf86.h"

+#include "xf86_OSproc.h"

+

+#include <X11/X.h>

+#include "windowstr.h"

+#include "gcstruct.h"

+#include "regionstr.h"

+#include "miwideline.h"

+#include "mi.h"

+#include "xf86str.h"

+#include "xaa.h"

+#include "xaalocal.h"

+

+#define DRAW_POINT(pScrn, x, y) \

+  if(hardClip) (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, 1, 1); \

+  else XAAPointHelper(pScrn, x, y)

+

+#define FILL_RECT(pScrn, x, y, w, h) \

+  if(hardClip) (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, w, h); \

+  else XAAFillRectHelper(pScrn, x, y, w, h)

+

+#define FILL_SPAN(pScrn, x, y, w) \

+  if(hardClip) (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, w, 1); \

+  else XAASpanHelper(pScrn, x, y, w)

+

+

+#define CLIPSTEPEDGE(edgey,edge,edgeleft) \

+    if (ybase == edgey) { \

+	if (edgeleft) { \

+	    if (edge->x > xcl) \

+		xcl = edge->x; \

+	} else { \

+	    if (edge->x < xcr) \

+		xcr = edge->x; \

+	} \

+	edgey++; \

+	edge->x += edge->stepx; \

+	edge->e += edge->dx; \

+	if (edge->e > 0) { \

+	    edge->x += edge->signdx; \

+	    edge->e -= edge->dy; \

+	} \

+    }

+

+static void 

+XAAPointHelper(ScrnInfoPtr pScrn, int x, int y)

+{

+   XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);

+   BoxPtr extents = infoRec->ClipBox;

+

+   if((x >= extents->x1) && (x < extents->x2) &&

+	(y >= extents->y1) && (y < extents->y2))

+	(*infoRec->SubsequentSolidFillRect)(pScrn, x, y, 1, 1);

+}

+

+static void 

+XAAFillRectHelper(ScrnInfoPtr pScrn, int x1, int y1, int dx, int dy)

+{

+   XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);

+   BoxPtr extents = infoRec->ClipBox;

+   int x2 = x1 + dx;

+   int y2 = y1 + dy;

+	

+   if(x1 < extents->x1) x1 = extents->x1;

+   if(x2 >= extents->x2) x2 = extents->x2;

+   if((dx = x2 - x1)<1) return;

+   if(y1 < extents->y1) y1 = extents->y1;

+   if(y2 >= extents->y2) y2 = extents->y2;

+   if((dy = y2 - y1)<1) return;

+

+   (*infoRec->SubsequentSolidFillRect)(pScrn, x1, y1, dx, dy);

+}

+

+

+static void 

+XAASpanHelper(ScrnInfoPtr pScrn, int x1, int y, int width)

+{

+   XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn);

+   BoxPtr extents = infoRec->ClipBox;

+    int x2;

+

+    if((y < extents->y1) || (y >= extents->y2)) return;

+

+    x2 = x1 + width;

+    if(x1 < extents->x1) x1 = extents->x1;

+    if(x2 > extents->x2) x2 = extents->x2;

+    width = x2 - x1;	

+

+    if(width > 0)	

+ 	(*infoRec->SubsequentSolidFillRect)(pScrn, x1, y, width, 1);

+

+}

+

+#define FixError(x, dx, dy, e, sign, step, h)	{	\

+	   e += (h) * dx;				\

+	   x += (h) * step;				\

+	   if(e > 0) {					\

+		x += e * sign/dy;			\

+		e %= dy;				\

+	   	if(e) {					\

+		   x += sign;				\

+		   e -= dy;				\

+		}					\

+	   } 	 					\

+}

+

+

+static void

+XAAFillPolyHelper (

+    GCPtr	pGC,

+    int		y,			/* start y coordinate */

+    int		overall_height,		/* height of entire segment */

+    PolyEdgePtr	left, PolyEdgePtr right,

+    int	left_count, int right_count )

+{

+    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);

+    BoxPtr extents = infoRec->ClipBox;

+    int left_x, left_e, left_stepx, left_signdx, left_dy, left_dx;

+    int right_x, right_e, right_stepx, right_signdx, right_dy, right_dx;

+    int	height, left_height, right_height;

+    int	xorg;

+    Bool hardClip;

+

+    if((y >= extents->y2) || ((y + overall_height) <= extents->y1))

+	return;

+

+    /* Muffle compiler */

+    left_x = left_e = left_stepx = left_signdx = left_dy = left_dx = 0;

+    right_x = right_e = right_stepx = right_signdx = right_dy = right_dx = 0;

+

+    left_height = right_height = 0;

+    xorg = 0;

+

+    hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);

+    

+    while ((left_count || left_height) && (right_count || right_height)) {

+  	if (!left_height && left_count) { 

+	    left_height = left->height; 

+	    left_x = left->x + xorg; 

+	    left_stepx = left->stepx; 

+	    left_signdx = left->signdx; 

+	    left_e = left->e; 

+	    left_dy = left->dy; 

+	    left_dx = left->dx; 

+	    left_count--; 

+	    left++;

+	}

+	if (!right_height && right_count) { 

+	    right_height = right->height; 

+	    right_x = right->x + xorg + 1; 

+	    right_stepx = right->stepx; 

+	    right_signdx = right->signdx; 

+	    right_e = right->e; 

+	    right_dy = right->dy; 

+	    right_dx = right->dx; 

+	    right_count--; 

+	    right++; 

+	}

+

+	height = (left_height > right_height) ? right_height : left_height;

+

+	left_height -= height;

+	right_height -= height;

+

+	if(hardClip && infoRec->SubsequentSolidFillTrap && (height > 6)) {

+	    int right_DX, left_DX;

+

+    	    right_DX = (right_dx * right_signdx) + (right_stepx * right_dy);

+	    left_DX = (left_dx * left_signdx) + (left_stepx * left_dy);

+

+	    (*infoRec->SubsequentSolidFillTrap)(infoRec->pScrn, y, height, 

+			left_x, left_DX, left_dy, left_e, 

+			right_x - 1, right_DX, right_dy, right_e);

+

+	    FixError(left_x, left_dx, left_dy, left_e, left_signdx, 

+			left_stepx, height);

+	    FixError(right_x, right_dx, right_dy, right_e, right_signdx,

+			right_stepx, height);

+	    y += height;

+	    continue;

+	}

+

+	while (height--) {

+	    if(right_x > left_x) {

+		FILL_SPAN(infoRec->pScrn, left_x, y, right_x - left_x);

+	    }

+    	    y++;

+    	

+ 	    left_x += left_stepx; 

+	    left_e += left_dx; 

+	    if (left_e > 0) { 

+		left_x += left_signdx; 

+		left_e -= left_dy; 

+	    }

+	    right_x += right_stepx; 

+	    right_e += right_dx; 

+	    if (right_e > 0) { 

+		right_x += right_signdx; 

+		right_e -= right_dy; 

+	    }

+

+	}

+    }

+}

+

+

+

+static void

+XAAWideSegment (

+    GCPtr pGC,

+    int  x1, int y1, int x2, int y2,

+    Bool projectLeft, Bool projectRight,

+    LineFacePtr leftFace, LineFacePtr rightFace )

+{

+    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);

+    double	l, L, r;

+    double	xa, ya;

+    double	projectXoff, projectYoff;

+    double	k;

+    double	maxy;

+    int		x, y;

+    int		dx, dy;

+    int		finaly;

+    PolyEdgePtr left, right;

+    PolyEdgePtr	top, bottom;

+    int		lefty, righty, topy, bottomy;

+    int		signdx;

+    PolyEdgeRec	lefts[2], rights[2];

+    LineFacePtr	tface;

+    int		lw = pGC->lineWidth;

+    Bool	hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);

+

+    /* draw top-to-bottom always */

+    if ((y2 < y1) || ((y2 == y1) && (x2 < x1))) {

+	x = x1;

+	x1 = x2;

+	x2 = x;

+

+	y = y1;

+	y1 = y2;

+	y2 = y;

+

+	x = projectLeft;

+	projectLeft = projectRight;

+	projectRight = x;

+

+	tface = leftFace;

+	leftFace = rightFace;

+	rightFace = tface;

+    }

+

+    dy = y2 - y1;

+    signdx = 1;

+    dx = x2 - x1;

+    if (dx < 0)

+	signdx = -1;

+

+    leftFace->x = x1;

+    leftFace->y = y1;

+    leftFace->dx = dx;

+    leftFace->dy = dy;

+

+    rightFace->x = x2;

+    rightFace->y = y2;

+    rightFace->dx = -dx;

+    rightFace->dy = -dy;

+

+    if (!dy) {

+	rightFace->xa = 0;

+	rightFace->ya = (double) lw / 2.0;

+	rightFace->k = -(double) (lw * dx) / 2.0;

+	leftFace->xa = 0;

+	leftFace->ya = -rightFace->ya;

+	leftFace->k = rightFace->k;

+	x = x1;

+	if (projectLeft)

+	    x -= (lw >> 1);

+	y = y1 - (lw >> 1);

+	dx = x2 - x;

+	if (projectRight)

+	    dx += ((lw + 1) >> 1);

+	dy = lw;

+	FILL_RECT(infoRec->pScrn, x, y, dx, dy);	

+    } else if (!dx) {

+	leftFace->xa =  (double) lw / 2.0;

+	leftFace->ya = 0;

+	leftFace->k = (double) (lw * dy) / 2.0;

+	rightFace->xa = -leftFace->xa;

+	rightFace->ya = 0;

+	rightFace->k = leftFace->k;

+	y = y1;

+	if (projectLeft)

+	    y -= lw >> 1;

+	x = x1 - (lw >> 1);

+	dy = y2 - y;

+	if (projectRight)

+	    dy += ((lw + 1) >> 1);

+	dx = lw;

+ 	FILL_RECT(infoRec->pScrn, x, y, dx, dy);

+    } else {

+    	l = ((double) lw) / 2.0;

+    	L = sqrt((double)(dx*dx + dy*dy));

+

+	if (dx < 0) {

+	    right = &rights[1];

+	    left = &lefts[0];

+	    top = &rights[0];

+	    bottom = &lefts[1];

+	} else {

+	    right = &rights[0];

+	    left = &lefts[1];

+	    top = &lefts[0];

+	    bottom = &rights[1];

+	}

+	r = l / L;

+

+	/* coord of upper bound at integral y */

+	ya = -r * dx;

+	xa = r * dy;

+

+	projectXoff = -ya;

+	projectYoff = xa;

+

+    	/* xa * dy - ya * dx */

+	k = l * L;

+

+	leftFace->xa = xa;

+	leftFace->ya = ya;

+	leftFace->k = k;

+	rightFace->xa = -xa;

+	rightFace->ya = -ya;

+	rightFace->k = k;

+

+	if (projectLeft)

+	    righty = miPolyBuildEdge (xa - projectXoff, ya - projectYoff,

+				      k, dx, dy, x1, y1, 0, right);

+	else

+	    righty = miPolyBuildEdge (xa, ya,

+				      k, dx, dy, x1, y1, 0, right);

+

+	/* coord of lower bound at integral y */

+	ya = -ya;

+	xa = -xa;

+

+	/* xa * dy - ya * dx */

+	k = - k;

+

+	if (projectLeft)

+	    lefty = miPolyBuildEdge (xa - projectXoff, ya - projectYoff,

+				     k, dx, dy, x1, y1, 1, left);

+	else

+	    lefty = miPolyBuildEdge (xa, ya,

+				     k, dx, dy, x1, y1, 1, left);

+

+	/* coord of top face at integral y */

+

+	if (signdx > 0) {

+	    ya = -ya;

+	    xa = -xa;

+	}

+

+	if (projectLeft) {

+	    double xap = xa - projectXoff;

+	    double yap = ya - projectYoff;

+	    topy = miPolyBuildEdge (xap, yap, xap * dx + yap * dy,

+				    -dy, dx, x1, y1, dx > 0, top);

+	}

+	else

+	    topy = miPolyBuildEdge(xa, ya, 0.0, 

+					-dy, dx, x1, y1, dx > 0, top);

+

+		/* coord of bottom face at integral y */

+

+	if (projectRight) {

+	    double xap = xa + projectXoff;

+	    double yap = ya + projectYoff;

+	    bottomy = miPolyBuildEdge (xap, yap, xap * dx + yap * dy,

+				       -dy, dx, x2, y2, dx < 0, bottom);

+	    maxy = -ya + projectYoff;

+	} else {

+	    bottomy = miPolyBuildEdge (xa, ya, 0.0,

+					-dy, dx, x2, y2, dx < 0, bottom);

+	    maxy = -ya;

+	}

+

+	finaly = ICEIL (maxy) + y2;

+

+	if (dx < 0) {

+	    left->height = bottomy - lefty;

+	    right->height = finaly - righty;

+	    top->height = righty - topy;

+	} else {

+	    right->height =  bottomy - righty;

+	    left->height = finaly - lefty;

+	    top->height = lefty - topy;

+	}

+	bottom->height = finaly - bottomy;

+	XAAFillPolyHelper (pGC, topy, 

+		bottom->height + bottomy - topy, lefts, rights, 2, 2);

+    }

+}

+

+

+static void

+XAALineArcI (GCPtr pGC, int xorg, int yorg)

+{

+    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);

+    int x, y, e, ex;

+    int slw = pGC->lineWidth;

+    Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);

+

+    y = (slw >> 1) + 1;

+    if (slw & 1)

+	e = - ((y << 2) + 3);

+    else

+	e = - (y << 3);

+    ex = -4;

+    x = 0;

+    while (y) {

+	e += (y << 3) - 4;

+	while (e >= 0) {

+	    x++;

+	    e += (ex = -((x << 3) + 4));

+	}

+	y--;

+	slw = (x << 1) + 1;

+	if ((e == ex) && (slw > 1))

+	    slw--;

+	    

+	FILL_SPAN(infoRec->pScrn, xorg - x, yorg - y, slw);

+

+	if ((y != 0) && ((slw > 1) || (e != ex))) {	

+	    FILL_SPAN(infoRec->pScrn, xorg - x, yorg + y, slw);

+	}

+    }

+}

+

+

+static void

+XAALineArcD (

+    GCPtr	    pGC,

+    double	    xorg,

+    double	    yorg,

+    PolyEdgePtr	    edge1, 

+    int		    edgey1,

+    Bool	    edgeleft1,

+    PolyEdgePtr	    edge2,

+    int		    edgey2,

+    Bool	    edgeleft2 )

+{

+    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);

+    double radius, x0, y0, el, er, yk, xlk, xrk, k;

+    int xbase, ybase, y, boty, xl, xr, xcl, xcr;

+    int ymin, ymax;

+    Bool edge1IsMin, edge2IsMin;

+    int ymin1, ymin2;

+    Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);

+

+

+    xbase = floor(xorg);

+    x0 = xorg - xbase;

+    ybase = ICEIL (yorg);

+    y0 = yorg - ybase;

+

+    xlk = x0 + x0 + 1.0;

+    xrk = x0 + x0 - 1.0;

+    yk = y0 + y0 - 1.0;

+    radius = ((double)pGC->lineWidth) / 2.0;

+    y = floor(radius - y0 + 1.0);

+    ybase -= y;

+    ymin = ybase;

+    ymax = 65536;

+    edge1IsMin = FALSE;

+    ymin1 = edgey1;

+    if (edge1->dy >= 0) {

+    	if (!edge1->dy) {

+	    if (edgeleft1)

+	    	edge1IsMin = TRUE;

+	    else

+	    	ymax = edgey1;

+	    edgey1 = 65536;

+    	} else if ((edge1->signdx < 0) == edgeleft1)

+	    	edge1IsMin = TRUE;

+    }

+    edge2IsMin = FALSE;

+    ymin2 = edgey2;

+    if (edge2->dy >= 0) {

+    	if (!edge2->dy) {

+	    if (edgeleft2)

+	    	edge2IsMin = TRUE;

+	    else

+	    	ymax = edgey2;

+	    edgey2 = 65536;

+    	} else if ((edge2->signdx < 0) == edgeleft2)

+	    	edge2IsMin = TRUE;

+    }

+    if (edge1IsMin) {

+	ymin = ymin1;

+	if (edge2IsMin && (ymin1 > ymin2))

+	    ymin = ymin2;

+    } else if (edge2IsMin)

+	ymin = ymin2;

+    el = radius * radius - ((y + y0) * (y + y0)) - (x0 * x0);

+    er = el + xrk;

+    xl = 1;

+    xr = 0;

+    if (x0 < 0.5) {

+	xl = 0;

+	el -= xlk;

+    }

+    boty = (y0 < -0.5) ? 1 : 0;

+    if (ybase + y - boty > ymax)

+	boty = ymax - ybase - y;

+    while (y > boty) {

+	k = (y << 1) + yk;

+	er += k;

+	while (er > 0.0) {

+	    xr++;

+	    er += xrk - (xr << 1);

+	}

+	el += k;

+	while (el >= 0.0) {

+	    xl--;

+	    el += (xl << 1) - xlk;

+	}

+	y--;

+	ybase++;

+	if (ybase < ymin)

+	    continue;

+	xcl = xl + xbase;

+	xcr = xr + xbase;

+	CLIPSTEPEDGE(edgey1, edge1, edgeleft1);

+	CLIPSTEPEDGE(edgey2, edge2, edgeleft2);

+	if(xcr >= xcl) {

+	    FILL_SPAN(infoRec->pScrn, xcl, ybase, xcr - xcl + 1);

+	}

+    }

+    er = xrk - (xr << 1) - er;

+    el = (xl << 1) - xlk - el;

+    boty = floor(-y0 - radius + 1.0);

+    if (ybase + y - boty > ymax)

+	boty = ymax - ybase - y;

+    while (y > boty) {

+	k = (y << 1) + yk;

+	er -= k;

+	while ((er >= 0.0) && (xr >= 0)) {

+	    xr--;

+	    er += xrk - (xr << 1);

+	}

+	el -= k;

+	while ((el > 0.0) && (xl <= 0)) {

+	    xl++;

+	    el += (xl << 1) - xlk;

+	}

+	y--;

+	ybase++;

+	if (ybase < ymin)

+	    continue;

+	xcl = xl + xbase;

+	xcr = xr + xbase;

+	CLIPSTEPEDGE(edgey1, edge1, edgeleft1);

+	CLIPSTEPEDGE(edgey2, edge2, edgeleft2);

+	if(xcr >= xcl) {

+	    FILL_SPAN(infoRec->pScrn, xcl, ybase, xcr - xcl + 1);

+	}

+    }

+}

+

+

+static void

+XAALineArc (

+    GCPtr  pGC,

+    LineFacePtr leftFace,

+    LineFacePtr rightFace,

+    double	xorg,

+    double	yorg,

+    Bool	isInt )

+{

+    int xorgi, yorgi;

+    PolyEdgeRec	edge1, edge2;

+    int		edgey1, edgey2;

+    Bool	edgeleft1, edgeleft2;

+

+    if (isInt) {

+	xorgi = leftFace ? leftFace->x : rightFace->x;

+	yorgi = leftFace ? leftFace->y : rightFace->y;

+    } else {	/* Muffle compiler */

+        xorgi = yorgi = 0;

+    }

+    edgey1 = 65536;

+    edgey2 = 65536;

+    edge1.x = 0; /* not used, keep memory checkers happy */

+    edge1.dy = -1;

+    edge2.x = 0; /* not used, keep memory checkers happy */

+    edge2.dy = -1;

+    edgeleft1 = FALSE;

+    edgeleft2 = FALSE;

+

+    if ((pGC->lineWidth > 2) &&

+	((pGC->capStyle == CapRound && pGC->joinStyle != JoinRound) ||

+	 (pGC->joinStyle == JoinRound && pGC->capStyle == CapButt))) {

+	if (isInt) {

+	    xorg = (double) xorgi;

+	    yorg = (double) yorgi;

+	}

+

+	if (leftFace && rightFace) 

+	    miRoundJoinClip (leftFace, rightFace, &edge1, &edge2,

+			     &edgey1, &edgey2, &edgeleft1, &edgeleft2);

+	else if (leftFace)

+	    edgey1 = miRoundCapClip (leftFace, isInt, &edge1, &edgeleft1);

+	else if (rightFace)

+	    edgey2 = miRoundCapClip (rightFace, isInt, &edge2, &edgeleft2);

+

+	isInt = FALSE;

+    }

+

+    if (isInt) {

+	if(pGC->lineWidth == 1) {

+	    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);

+	    Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);

+	    DRAW_POINT(infoRec->pScrn, xorgi, yorgi);

+	} else

+	    XAALineArcI(pGC, xorgi, yorgi);

+    } else

+	XAALineArcD(pGC, xorg, yorg, &edge1, edgey1, edgeleft1,

+		       &edge2, edgey2, edgeleft2);

+

+}

+

+

+static void

+XAALineJoin (

+    GCPtr	    pGC,

+    LineFacePtr     pLeft,

+    LineFacePtr     pRight )

+{

+    double	    mx = 0, my = 0;

+    double	    denom = 0;

+    PolyVertexRec   vertices[4];

+    PolySlopeRec    slopes[4];

+    int		    edgecount;

+    PolyEdgeRec	    left[4], right[4];

+    int		    nleft, nright;

+    int		    y, height;

+    int		    swapslopes;

+    int		    joinStyle = pGC->joinStyle;

+    int		    lw = pGC->lineWidth;

+

+    if (lw == 1) {

+	/* Lines going in the same direction have no join */

+	if ((pLeft->dx >= 0) == (pRight->dx <= 0))

+	    return;

+	if (joinStyle != JoinRound) {

+    	    denom = - pLeft->dx * (double)pRight->dy + pRight->dx *

+ 					(double)pLeft->dy;

+    	    if (denom == 0.0)

+	    	return;	/* no join to draw */

+	}

+	if (joinStyle != JoinMiter) {

+	    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);

+	    Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL);

+	    DRAW_POINT(infoRec->pScrn, pLeft->x, pLeft->y);	

+	    return;

+	}

+    } else {

+    	if (joinStyle == JoinRound) {

+	    XAALineArc(pGC, pLeft, pRight,(double)0.0, (double)0.0, TRUE);

+	    return;

+    	}

+    	denom = - pLeft->dx * (double)pRight->dy + pRight->dx * 

+				(double)pLeft->dy;

+    	if (denom == 0.0)

+	    return;	/* no join to draw */

+    }

+

+    swapslopes = 0;

+    if (denom > 0) {

+	pLeft->xa = -pLeft->xa;

+	pLeft->ya = -pLeft->ya;

+	pLeft->dx = -pLeft->dx;

+	pLeft->dy = -pLeft->dy;

+    } else {

+	swapslopes = 1;

+	pRight->xa = -pRight->xa;

+	pRight->ya = -pRight->ya;

+	pRight->dx = -pRight->dx;

+	pRight->dy = -pRight->dy;

+    }

+

+    vertices[0].x = pRight->xa;

+    vertices[0].y = pRight->ya;

+    slopes[0].dx = -pRight->dy;

+    slopes[0].dy =  pRight->dx;

+    slopes[0].k = 0;

+

+    vertices[1].x = 0;

+    vertices[1].y = 0;

+    slopes[1].dx =  pLeft->dy;

+    slopes[1].dy = -pLeft->dx;

+    slopes[1].k = 0;

+

+    vertices[2].x = pLeft->xa;

+    vertices[2].y = pLeft->ya;

+

+    if (joinStyle == JoinMiter) {

+    	my = (pLeft->dy  * (pRight->xa * pRight->dy - pRight->ya * pRight->dx) -

+              pRight->dy * (pLeft->xa  * pLeft->dy  - pLeft->ya  * pLeft->dx ))/

+	      denom;

+    	if (pLeft->dy != 0) 

+	    mx = pLeft->xa + (my - pLeft->ya) *

+			    (double) pLeft->dx / (double) pLeft->dy;

+    	else

+	    mx = pRight->xa + (my - pRight->ya) *

+			    (double) pRight->dx / (double) pRight->dy;

+    	

+	/* check miter limit */

+	if ((mx * mx + my * my) * 4 > SQSECANT * lw * lw)

+	    joinStyle = JoinBevel;

+    }

+

+    if (joinStyle == JoinMiter) {

+	slopes[2].dx = pLeft->dx;

+	slopes[2].dy = pLeft->dy;

+	slopes[2].k =  pLeft->k;

+	if (swapslopes) {

+	    slopes[2].dx = -slopes[2].dx;

+	    slopes[2].dy = -slopes[2].dy;

+	    slopes[2].k  = -slopes[2].k;

+	}

+	vertices[3].x = mx;

+	vertices[3].y = my;

+	slopes[3].dx = pRight->dx;

+	slopes[3].dy = pRight->dy;

+	slopes[3].k  = pRight->k;

+	if (swapslopes) {

+	    slopes[3].dx = -slopes[3].dx;

+	    slopes[3].dy = -slopes[3].dy;

+	    slopes[3].k  = -slopes[3].k;

+	}

+	edgecount = 4;

+    } else {

+	double	scale, dx, dy, adx, ady;

+

+	adx = dx = pRight->xa - pLeft->xa;

+	ady = dy = pRight->ya - pLeft->ya;

+	if (adx < 0)

+	    adx = -adx;

+	if (ady < 0)

+	    ady = -ady;

+	scale = ady;

+	if (adx > ady)

+	    scale = adx;

+	slopes[2].dx = (dx * 65536) / scale;

+	slopes[2].dy = (dy * 65536) / scale;

+	slopes[2].k = ((pLeft->xa + pRight->xa) * slopes[2].dy -

+		       (pLeft->ya + pRight->ya) * slopes[2].dx) / 2.0;

+	edgecount = 3;

+    }

+

+    y = miPolyBuildPoly (vertices, slopes, edgecount, pLeft->x, pLeft->y,

+		   left, right, &nleft, &nright, &height);

+    XAAFillPolyHelper(pGC, y, height, left, right, nleft, nright);

+}

+

+

+void

+XAAPolylinesWideSolid (

+   DrawablePtr  pDrawable,

+   GCPtr        pGC,

+   int          mode,

+   int          npt,

+   DDXPointPtr  pPts )

+{

+    XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC);

+    int		    x1, y1, x2, y2;

+    Bool	    projectLeft, projectRight;

+    LineFaceRec	    leftFace, rightFace, prevRightFace, firstFace;

+    int    	    first = TRUE;

+    Bool	    somethingDrawn = FALSE;

+    Bool	    selfJoin = FALSE;

+    int		    xorg = pDrawable->x;

+    int		    yorg = pDrawable->y;

+    Bool	    hardClip = FALSE;

+

+    if(!RegionNumRects(pGC->pCompositeClip))

+	return;

+

+    if(RegionNumRects(pGC->pCompositeClip) != 1) {

+	miWideLine(pDrawable, pGC, mode, npt, pPts);

+	return;

+    }

+

+    x2 = pPts->x;

+    y2 = pPts->y;

+    if (npt > 1) {

+    	if (mode == CoordModePrevious) {

+	    int nptTmp;

+	    register DDXPointPtr pPtsTmp;

+    

+	    x1 = x2;

+	    y1 = y2;

+	    nptTmp = npt;

+	    pPtsTmp = pPts + 1;

+	    while (--nptTmp) {

+	    	x1 += pPtsTmp->x;

+	    	y1 += pPtsTmp->y;

+	    	++pPtsTmp;

+	    }

+	    if ((x2 == x1) && (y2 == y1))

+	    	selfJoin = TRUE;

+    	} else if ((x2 == pPts[npt-1].x) && (y2 == pPts[npt-1].y)) 

+	    selfJoin = TRUE;

+    }

+

+    projectLeft = ((pGC->capStyle == CapProjecting) && !selfJoin);

+    projectRight = FALSE;

+

+    (*infoRec->SetupForSolidFill)(infoRec->pScrn, pGC->fgPixel, pGC->alu, 

+						pGC->planemask);

+

+    infoRec->ClipBox = &pGC->pCompositeClip->extents;

+

+    if(infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL) {

+	hardClip = TRUE;

+	(*infoRec->SetClippingRectangle)(infoRec->pScrn,

+              infoRec->ClipBox->x1, infoRec->ClipBox->y1, 

+              infoRec->ClipBox->x2 - 1, infoRec->ClipBox->y2 - 1);		

+    }

+

+    x2 += xorg;

+    y2 += yorg;

+    while (--npt) {

+	x1 = x2;

+	y1 = y2;

+	++pPts;

+	x2 = pPts->x;

+	y2 = pPts->y;

+	if (mode == CoordModePrevious) {

+	    x2 += x1;

+	    y2 += y1;

+	} else {

+	    x2 += xorg;

+	    y2 += yorg;

+	}

+	if ((x1 != x2) || (y1 != y2)) {

+	    somethingDrawn = TRUE;

+	    if ((npt == 1) && (pGC->capStyle == CapProjecting) && !selfJoin)

+	    	projectRight = TRUE;

+	    XAAWideSegment(pGC, x1, y1, x2, y2,

+		       	   projectLeft, projectRight, &leftFace, &rightFace);

+	    if (first) {

+	    	if (selfJoin)

+		    firstFace = leftFace;

+	    	else if (pGC->capStyle == CapRound) {

+		    if (pGC->lineWidth == 1) {

+			DRAW_POINT(infoRec->pScrn, x1, y1);

+		    } else

+		        XAALineArc(pGC,&leftFace, (LineFacePtr) NULL,

+ 			       	   (double)0.0, (double)0.0,TRUE);

+		}

+	    } else 

+	    	XAALineJoin (pGC, &leftFace, &prevRightFace);

+

+	    prevRightFace = rightFace;

+	    first = FALSE;

+	    projectLeft = FALSE;

+	}

+	if (npt == 1 && somethingDrawn) {

+	    if (selfJoin)

+		XAALineJoin (pGC, &firstFace, &rightFace);

+	    else if (pGC->capStyle == CapRound) {

+		if (pGC->lineWidth == 1) {

+		    DRAW_POINT(infoRec->pScrn, x2, y2);

+		} else

+		    XAALineArc (pGC, (LineFacePtr) NULL, &rightFace,

+			       (double)0.0, (double)0.0,TRUE);

+	    }

+	}

+    }

+    /* handle crock where all points are coincedent */

+    if (!somethingDrawn) {

+	projectLeft = (pGC->capStyle == CapProjecting);

+	XAAWideSegment (pGC, x2, y2, x2, y2, projectLeft, projectLeft,

+		       &leftFace, &rightFace);

+	if (pGC->capStyle == CapRound) {

+	    XAALineArc (pGC, &leftFace, (LineFacePtr) NULL,

+		       (double)0.0, (double)0.0, TRUE);

+	    rightFace.dx = -1;	/* sleezy hack to make it work */

+	    XAALineArc (pGC, (LineFacePtr) NULL, &rightFace,

+ 		       (double)0.0, (double)0.0, TRUE);

+	}

+   }

+

+   infoRec->ClipBox = NULL;

+   if(hardClip)

+	(*infoRec->DisableClipping)(infoRec->pScrn);

+

+   SET_SYNC_FLAG(infoRec);

+}