/* $XConsortium: mach32frect.c,v 1.5 95/01/05 20:27:25 kaleb Exp $ */
/* $XFree86: xc/programs/Xserver/hw/xfree86/accel/mach32/mach32frect.c,v 3.8 1995/01/28 16:58:55 dawes Exp $ */
/*

Copyright (c) 1989  X Consortium

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 THE X CONSORTIUM 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 X Consortium 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 X Consortium.


Copyright 1993 by Kevin E. Martin, Chapel Hill, North Carolina.

Modified for the 8514/A by Kevin E. Martin (martin@cs.unc.edu)

KEVIN E. MARTIN AND RICKARD E. FAITH DISCLAIM ALL WARRANTIES WITH REGARD TO
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS, IN NO EVENT SHALL KEVIN E. MARTIN 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.

Modified for the Mach-8 by Rickard E. Faith (faith@cs.unc.edu)
Modified for the Mach32 by Kevin E. Martin (martin@cs.unc.edu)
Modified for the Mach32 by Mike Bernson (mike@mbsun.mlb.org) from mach8 version
Simple expansion of tiles added by incorporating parts of the code from
mach8pcach.c 94-07-12, Hans Nasten ( nasten@everyware.se ).

*/


/*
 * Fill rectangles.
 */

#include "X.h"
#include "Xmd.h"
#include "servermd.h"
#include "gcstruct.h"
#include "window.h"
#include "pixmapstr.h"
#include "scrnintstr.h"
#include "windowstr.h"

#include "cfb.h"
#include "cfbmskbits.h"
#include "mergerop.h"

#include "mach32.h"

#define NUM_STACK_RECTS	1024

typedef struct _CacheInfo {
    int x;
    int y;
    int w;
    int h;
    int nx;
    int ny;
    int pix_w;
    int pix_h;
} CacheInfo, *CacheInfoPtr;

static CacheInfo cInfo;
static int pixmap_x;
static int pixmap_y;
static int pixmap_size = 0;

void mach32InitFrect( x, y, size )
int x, y, size;
{

  pixmap_x = x;
  pixmap_y = y;
  pixmap_size = size;

}

static void DoCacheExpandPixmap( pci )
CacheInfoPtr pci;
{
    int cur_w = pci->pix_w;
    int cur_h = pci->pix_h;

    WaitQueue(7);
    outw(EXT_SCISSOR_T, 0);
    outw(EXT_SCISSOR_L, 0);
    outw(EXT_SCISSOR_R, mach32MaxX);
    outw(EXT_SCISSOR_B, mach32MaxY);
    outw(FRGD_MIX, FSS_BITBLT | MIX_SRC);
    outw(BKGD_MIX, BSS_BKGDCOL | MIX_SRC);
    outw(WRT_MASK, 0xffff);

    /* Expand in the x direction */
    while (cur_w * 2 <= pci->w) {
	WaitQueue(7);
	outw(CUR_X, (short)pci->x);
	outw(CUR_Y, (short)pci->y);
	outw(DESTX_DIASTP, (short)(pci->x + cur_w));
	outw(DESTY_AXSTP, (short)pci->y);
	outw(MAJ_AXIS_PCNT, (short)(cur_w - 1));
	outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(cur_h -  1));
	outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	cur_w *= 2;
    }

    if (cur_w != pci->w) {
	WaitQueue(7);
	outw(CUR_X, (short)pci->x);
	outw(CUR_Y, (short)pci->y);
	outw(DESTX_DIASTP, (short)(pci->x + cur_w));
	outw(DESTY_AXSTP, (short)pci->y);
	outw(MAJ_AXIS_PCNT, (short)(pci->w - cur_w - 1));
	outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(cur_h -  1));
	outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	cur_w = pci->w;
    }

    /* Expand in the y direction */
    while (cur_h * 2 <= pci->h) {
	WaitQueue(7);
	outw(CUR_X, (short)pci->x);
	outw(CUR_Y, (short)pci->y);
	outw(DESTX_DIASTP, (short)pci->x);
	outw(DESTY_AXSTP, (short)(pci->y + cur_h));
	outw(MAJ_AXIS_PCNT, (short)(cur_w - 1));
	outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(cur_h -  1));
	outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	cur_h *= 2;
    }

    if (cur_h != pci->h) {
	WaitQueue(7);
	outw(CUR_X, (short)pci->x);
	outw(CUR_Y, (short)pci->y);
	outw(DESTX_DIASTP, (short)pci->x);
	outw(DESTY_AXSTP, (short)(pci->y + cur_h));
	outw(MAJ_AXIS_PCNT, (short)(cur_w - 1));
	outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(pci->h - cur_h -  1));
	outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);
    }

    WaitQueue(2);
    outw(FRGD_MIX, FSS_FRGDCOL | MIX_SRC);
    outw(BKGD_MIX, BSS_BKGDCOL | MIX_SRC);
}


static CacheInfoPtr DoCacheTile( pix )
PixmapPtr pix;
{
    CacheInfoPtr pci = &cInfo;

    if( pixmap_size && pix->drawable.width <= pixmap_size
    && pix->drawable.height <= pixmap_size ) {
      pci->pix_w = pix->drawable.width;
      pci->pix_h = pix->drawable.height;
      pci->nx = pixmap_size/pix->drawable.width;
      pci->ny = pixmap_size/pix->drawable.height;
      pci->x = pixmap_x;
      pci->y = pixmap_y;
      pci->w = pci->nx * pci->pix_w;
      pci->h = pci->ny * pci->pix_h;
      (mach32ImageWriteFunc)( pci->x, pci->y, pci->pix_w, pci->pix_h,
			     pix->devPrivate.ptr, pix->devKind, 0, 0,
			     MIX_SRC, 0xffff );

      DoCacheExpandPixmap( pci );
      return( pci );
    }
    else
      return( NULL );
}

static CacheInfoPtr DoCacheOpStipple( pix )
PixmapPtr pix;
{
    CacheInfoPtr pci = &cInfo;

    if( pixmap_size && pix->drawable.width <= pixmap_size
    && pix->drawable.height <= pixmap_size ) {
      pci->pix_w = pix->drawable.width;
      pci->pix_h = pix->drawable.height;
      pci->nx = pixmap_size/pix->drawable.width;
      pci->ny = pixmap_size/pix->drawable.height;
      pci->x = pixmap_x;
      pci->y = pixmap_y;
      pci->w = pci->nx * pci->pix_w;
      pci->h = pci->ny * pci->pix_h;
      mach32ImageStipple( pci->x, pci->y, pci->pix_w, pci->pix_h,
			       pix->devPrivate.ptr, pix->devKind,
			       pci->pix_w, pci->pix_h, pci->x, pci->y,
			       255, 0, MIX_SRC, 0xffff, 1 );

      DoCacheExpandPixmap( pci );
      return( pci );
    }
    else
      return( NULL );
}


static void DoCacheImageFill( pci, x, y, w, h, pox, poy, fgalu, bgalu,
			      fgmix, bgmix, planemask)
CacheInfoPtr pci;
int x;
int y;
int w;
int h;
int pox;
int poy;
short fgalu;
short bgalu;
short fgmix;
short bgmix;
unsigned long planemask;
{
    int xwmid, ywmid, orig_xwmid;
    int startx, starty, endx, endy;
    int orig_x = x;

    if (w == 0 || h == 0)
	return;

    modulus(x - pox, pci->w, startx);
    modulus(y - poy, pci->h, starty);
    modulus(x - pox + w - 1, pci->w, endx);
    modulus(y - poy + h - 1, pci->h, endy);

    orig_xwmid = xwmid = w - (pci->w - startx + endx + 1);
    ywmid = h - (pci->h - starty + endy + 1);

    WaitQueue(7);
    outw(EXT_SCISSOR_T, 0);
    outw(EXT_SCISSOR_L, 0);
    outw(EXT_SCISSOR_R, mach32MaxX);
    outw(EXT_SCISSOR_B, mach32MaxY);
    outw(FRGD_MIX, fgmix | fgalu);
    outw(BKGD_MIX, bgmix | bgalu);
    outw(WRT_MASK, planemask);

    if (starty + h - 1 < pci->h) {
	if (startx + w - 1 < pci->w) {
	    WaitQueue(7);
	    outw(CUR_X, (short)(pci->x + startx));
	    outw(CUR_Y, (short)(pci->y + starty));
	    outw(DESTX_DIASTP, (short)x);
	    outw(DESTY_AXSTP, (short)y);
	    outw(MAJ_AXIS_PCNT, (short)(w - 1));
	    outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(h -  1));
	    outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);
	} else {
	    WaitQueue(7);
	    outw(CUR_X, (short)(pci->x + startx));
	    outw(CUR_Y, (short)(pci->y + starty));
	    outw(DESTX_DIASTP, (short)x);
	    outw(DESTY_AXSTP, (short)y);
	    outw(MAJ_AXIS_PCNT, (short)(pci->w - startx - 1));
	    outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(h -  1));
	    outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	    x += pci->w - startx;

	    while (xwmid > 0) {
		WaitQueue(7);
		outw(CUR_X, (short)pci->x);
		outw(CUR_Y, (short)(pci-> y + starty));
		outw(DESTX_DIASTP, (short)x);
		outw(DESTY_AXSTP, (short)y);
		outw(MAJ_AXIS_PCNT, (short)(pci->w - 1));
		outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(h -  1));
		outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR |
			   WRTDATA);
		x += pci->w;
		xwmid -= pci->w;
	    }

	    WaitQueue(7);
	    outw(CUR_X, (short)pci->x);
	    outw(CUR_Y, (short)(pci->y + starty));
	    outw(DESTX_DIASTP, (short)x);
	    outw(DESTY_AXSTP, (short)y);
	    outw(MAJ_AXIS_PCNT, (short)endx);
	    outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(h -  1));
	    outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);
	}
    } else if (startx + w - 1 < pci->w) {
	WaitQueue(7);
	outw(CUR_X, (short)(pci->x + startx));
	outw(CUR_Y, (short)(pci->y + starty));
	outw(DESTX_DIASTP, (short)x);
	outw(DESTY_AXSTP, (short)y);
	outw(MAJ_AXIS_PCNT, (short)(w - 1));
	outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(pci->h - starty -  1));
	outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	y += pci->h - starty;

	while (ywmid > 0) {
	    WaitQueue(7);
	    outw(CUR_X, (short)(pci->x + startx));
	    outw(CUR_Y, (short)pci->y);
	    outw(DESTX_DIASTP, (short)x);
	    outw(DESTY_AXSTP, (short)y);
	    outw(MAJ_AXIS_PCNT, (short)(w - 1));
	    outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(pci->h -  1));
	    outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	    y += pci->h;
	    ywmid -= pci->h;
	}

	WaitQueue(7);
	outw(CUR_X, (short)(pci->x + startx));
	outw(CUR_Y, (short)pci->y);
	outw(DESTX_DIASTP, (short)x);
	outw(DESTY_AXSTP, (short)y);
	outw(MAJ_AXIS_PCNT, (short)(w - 1));
	outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)endy);
	outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);
    } else {
	WaitQueue(7);
	outw(CUR_X, (short)(pci->x + startx));
	outw(CUR_Y, (short)(pci->y + starty));
	outw(DESTX_DIASTP, (short)x);
	outw(DESTY_AXSTP, (short)y);
	outw(MAJ_AXIS_PCNT, (short)(pci->w - startx - 1));
	outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(pci->h - starty -  1));
	outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	x += pci->w - startx;

	while (xwmid > 0) {
	    WaitQueue(7);
	    outw(CUR_X, (short)pci->x);
	    outw(CUR_Y, (short)(pci->y + starty));
	    outw(DESTX_DIASTP, (short)x);
	    outw(DESTY_AXSTP, (short)y);
	    outw(MAJ_AXIS_PCNT, (short)(pci->w - 1));
	    outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT |
				  (short)(pci->h - starty - 1));
	    outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	    x += pci->w;
	    xwmid -= pci->w;
	}

	WaitQueue(7);
	outw(CUR_X, (short)pci->x);
	outw(CUR_Y, (short)(pci->y + starty));
	outw(DESTX_DIASTP, (short)x);
	outw(DESTY_AXSTP, (short)y);
	outw(MAJ_AXIS_PCNT, (short)endx);
	outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(pci->h - starty - 1));
	outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	y += pci->h - starty;

	while (ywmid > 0) {
	    x = orig_x;
	    xwmid = orig_xwmid;

	    WaitQueue(7);
	    outw(CUR_X, (short)(pci-> x + startx));
	    outw(CUR_Y, (short)pci->y);
	    outw(DESTX_DIASTP, (short)x);
	    outw(DESTY_AXSTP, (short)y);
	    outw(MAJ_AXIS_PCNT, (short)(pci->w - startx - 1));
	    outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(pci->h - 1));
	    outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	    x += pci->w - startx;

	    while (xwmid > 0) {
		WaitQueue(7);
		outw(CUR_X, (short)pci->x);
		outw(CUR_Y, (short)pci->y);
		outw(DESTX_DIASTP, (short)x);
		outw(DESTY_AXSTP, (short)y);
		outw(MAJ_AXIS_PCNT, (short)(pci->w - 1));
		outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(pci->h - 1));
		outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR |
			   WRTDATA);

		x += pci->w;
		xwmid -= pci->w;
	    }

	    WaitQueue(7);
	    outw(CUR_X, (short)pci->x);
	    outw(CUR_Y, (short)pci->y);
	    outw(DESTX_DIASTP, (short)x);
	    outw(DESTY_AXSTP, (short)y);
	    outw(MAJ_AXIS_PCNT, (short)endx);
	    outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)(pci->h - 1));
	    outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	    y += pci->h;
	    ywmid -= pci->h;
	}

	x = orig_x;
	xwmid = orig_xwmid;

	WaitQueue(7);
	outw(CUR_X, (short)(pci->x + startx));
	outw(CUR_Y, (short)pci->y);
	outw(DESTX_DIASTP, (short)x);
	outw(DESTY_AXSTP, (short)y);
	outw(MAJ_AXIS_PCNT, (short)(pci->w - startx - 1));
	outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)endy);
	outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	x += pci->w - startx;

	while (xwmid > 0) {
	    WaitQueue(7);
	    outw(CUR_X, (short)pci->x);
	    outw(CUR_Y, (short)pci->y);
	    outw(DESTX_DIASTP, (short)x);
	    outw(DESTY_AXSTP, (short)y);
	    outw(MAJ_AXIS_PCNT, (short)(pci->w - 1));
	    outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)endy);
	    outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);

	    x += pci->w;
	    xwmid -= pci->w;
	}

	WaitQueue(7);
	outw(CUR_X, (short)pci->x);
	outw(CUR_Y, (short)pci->y);
	outw(DESTX_DIASTP, (short)x);
	outw(DESTY_AXSTP, (short)y);
	outw(MAJ_AXIS_PCNT, (short)endx);
	outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | (short)endy);
	outw(CMD, CMD_BITBLT | INC_X | INC_Y | DRAW | PLANAR | WRTDATA);
    }

    WaitQueue(2);
    outw(FRGD_MIX, FSS_FRGDCOL | MIX_SRC);
    outw(BKGD_MIX, BSS_BKGDCOL | MIX_SRC);
}


static void mach32CImageFill( pci, x, y, w, h, pox, poy, alu, planemask )
CacheInfoPtr pci;
int x;
int y;
int w;
int h;
int pox;
int poy;
short alu;
unsigned long planemask;
{

    DoCacheImageFill( pci, x, y, w, h, pox, poy, alu,
		      MIX_SRC, FSS_BITBLT, BSS_BITBLT, planemask );

}

static void mach32CImageStipple( pci, x, y, w, h, pox, poy, fg, alu, planemask )
CacheInfoPtr pci;
int x;
int y;
int w;
int h;
int pox;
int poy;
unsigned long fg;
short alu;
unsigned long planemask;
{

    WaitQueue(3);
    outw(FRGD_COLOR, fg);
    outw(MULTIFUNC_CNTL, PIX_CNTL | MIXSEL_EXPBLT | COLCMPOP_F);
    outw(RD_MASK, 0x01);

    DoCacheImageFill( pci, x, y, w, h, pox, poy, alu,
		      MIX_DST, FSS_FRGDCOL, BSS_BKGDCOL, planemask );

    WaitQueue(2);
    outw(RD_MASK, 0xffff);
    outw(MULTIFUNC_CNTL, PIX_CNTL | MIXSEL_FRGDMIX | COLCMPOP_F);

}

static void mach32CImageOpStipple( pci, x, y, w, h, pox, poy,
				  fg, bg, alu, planemask )
CacheInfoPtr pci;
int x;
int y;
int w;
int h;
int pox;
int poy;
unsigned long fg;
unsigned long bg;
short alu;
unsigned long planemask;
{

    WaitQueue(4);
    outw(FRGD_COLOR, fg);
    outw(BKGD_COLOR, bg);
    outw(MULTIFUNC_CNTL, PIX_CNTL | MIXSEL_EXPBLT | COLCMPOP_F);
    outw(RD_MASK, 0x01);

    DoCacheImageFill( pci, x, y, w, h, pox, poy, alu, alu,
		      FSS_FRGDCOL, BSS_BKGDCOL, planemask );

    WaitQueue(2);
    outw(RD_MASK, 0xffff);
    outw(MULTIFUNC_CNTL, PIX_CNTL | MIXSEL_FRGDMIX | COLCMPOP_F);

}


void
mach32PolyFillRect(pDrawable, pGC, nrectFill, prectInit)
    DrawablePtr pDrawable;
    register GCPtr pGC;
    int		nrectFill; 	/* number of rectangles to fill */
    xRectangle	*prectInit;  	/* Pointer to first rectangle to fill */
{
    xRectangle	    *prect;
    RegionPtr	    prgnClip;
    register BoxPtr pbox;
    register BoxPtr pboxClipped;
    BoxPtr	    pboxClippedBase;
    BoxPtr	    pextent;
    BoxRec	    stackRects[NUM_STACK_RECTS];
    cfbPrivGC	    *priv;
    int		    numRects;
    int		    n;
    int		    xorg, yorg;
    int		    width, height;
    PixmapPtr	    pPix;
    int		    pixWidth;
    int		    xrot, yrot;
    CacheInfoPtr    pci;

/* 11-jun-93 TCG : is VT visible */
    if (!xf86VTSema)
    {
        cfbPolyFillRect(pDrawable, pGC, nrectFill, prectInit);
	return;
    }

    priv = (cfbPrivGC *) pGC->devPrivates[cfbGCPrivateIndex].ptr;
    prgnClip = priv->pCompositeClip;

    prect = prectInit;
    xorg = pDrawable->x;
    yorg = pDrawable->y;
    if (xorg || yorg)
    {
	prect = prectInit;
	n = nrectFill;
	while(n--)
	{
	    prect->x += xorg;
	    prect->y += yorg;
	    prect++;
	}
    }

    prect = prectInit;

    numRects = REGION_NUM_RECTS(prgnClip) * nrectFill;
    if (numRects > NUM_STACK_RECTS)
    {
	pboxClippedBase = (BoxPtr)ALLOCATE_LOCAL(numRects * sizeof(BoxRec));
	if (!pboxClippedBase)
	    return;
    }
    else
	pboxClippedBase = stackRects;

    pboxClipped = pboxClippedBase;
	
    if (REGION_NUM_RECTS(prgnClip) == 1)
    {
	int x1, y1, x2, y2, bx2, by2;

	pextent = REGION_RECTS(prgnClip);
	x1 = pextent->x1;
	y1 = pextent->y1;
	x2 = pextent->x2;
	y2 = pextent->y2;
    	while (nrectFill--)
    	{
	    if ((pboxClipped->x1 = prect->x) < x1)
		pboxClipped->x1 = x1;
    
	    if ((pboxClipped->y1 = prect->y) < y1)
		pboxClipped->y1 = y1;
    
	    bx2 = (int) prect->x + (int) prect->width;
	    if (bx2 > x2)
		bx2 = x2;
	    pboxClipped->x2 = bx2;
    
	    by2 = (int) prect->y + (int) prect->height;
	    if (by2 > y2)
		by2 = y2;
	    pboxClipped->y2 = by2;

	    prect++;
	    if ((pboxClipped->x1 < pboxClipped->x2) &&
		(pboxClipped->y1 < pboxClipped->y2))
	    {
		pboxClipped++;
	    }
    	}
    }
    else
    {
	int x1, y1, x2, y2, bx2, by2;

	pextent = (*pGC->pScreen->RegionExtents)(prgnClip);
	x1 = pextent->x1;
	y1 = pextent->y1;
	x2 = pextent->x2;
	y2 = pextent->y2;
    	while (nrectFill--)
    	{
	    BoxRec box;
    
	    if ((box.x1 = prect->x) < x1)
		box.x1 = x1;
    
	    if ((box.y1 = prect->y) < y1)
		box.y1 = y1;
    
	    bx2 = (int) prect->x + (int) prect->width;
	    if (bx2 > x2)
		bx2 = x2;
	    box.x2 = bx2;
    
	    by2 = (int) prect->y + (int) prect->height;
	    if (by2 > y2)
		by2 = y2;
	    box.y2 = by2;
    
	    prect++;
    
	    if ((box.x1 >= box.x2) || (box.y1 >= box.y2))
	    	continue;
    
	    n = REGION_NUM_RECTS (prgnClip);
	    pbox = REGION_RECTS(prgnClip);
    
	    /* clip the rectangle to each box in the clip region
	       this is logically equivalent to calling Intersect()
	    */
	    while(n--)
	    {
		pboxClipped->x1 = max(box.x1, pbox->x1);
		pboxClipped->y1 = max(box.y1, pbox->y1);
		pboxClipped->x2 = min(box.x2, pbox->x2);
		pboxClipped->y2 = min(box.y2, pbox->y2);
		pbox++;

		/* see if clipping left anything */
		if(pboxClipped->x1 < pboxClipped->x2 && 
		   pboxClipped->y1 < pboxClipped->y2)
		{
		    pboxClipped++;
		}
	    }
    	}
    }

    if (pboxClipped != pboxClippedBase) {
	n = pboxClipped-pboxClippedBase;
	switch (pGC->fillStyle) {
	  case FillSolid:
	    WaitQueue(3);
	    outw(FRGD_COLOR, (short)(pGC->fgPixel));
	    outw(FRGD_MIX, FSS_FRGDCOL | mach32alu[pGC->alu]);
	    outw(WRT_MASK, (short)pGC->planemask);

	    pboxClipped = pboxClippedBase;
	    while (n--) {
		WaitQueue(5);
		outw(CUR_X, (short)(pboxClipped->x1));
		outw(CUR_Y, (short)(pboxClipped->y1));
		outw(MAJ_AXIS_PCNT,
		      (short)(pboxClipped->x2 - pboxClipped->x1 - 1));
		outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT |
		      (short)(pboxClipped->y2 - pboxClipped->y1 - 1));
		outw(CMD, CMD_RECT | INC_Y | INC_X | DRAW | PLANAR | WRTDATA);

		pboxClipped++;
	    }

	    WaitQueue(2);
	    outw(FRGD_MIX, FSS_FRGDCOL | MIX_SRC);
	    outw(BKGD_MIX, BSS_BKGDCOL | MIX_SRC);
 	    break;
	  case FillTiled:
	    xrot = pDrawable->x + pGC->patOrg.x;
	    yrot = pDrawable->y + pGC->patOrg.y;

	    pPix = pGC->tile.pixmap;
	    width = pPix->drawable.width;
	    height = pPix->drawable.height;
	    pixWidth = PixmapBytePad(width, pPix->drawable.depth);

	    pboxClipped = pboxClippedBase;
	    if( pci = DoCacheTile( pPix ) ) {
		while (n--) {
		    mach32CImageFill( pci, pboxClipped->x1, pboxClipped->y1,
				     pboxClipped->x2 - pboxClipped->x1,
				     pboxClipped->y2 - pboxClipped->y1,
				     xrot, yrot,
				     mach32alu[pGC->alu], pGC->planemask );
		    pboxClipped++;
		}
	    } else {
		while (n--) {
		    (*mach32ImageFillFunc)(pboxClipped->x1, pboxClipped->y1,
				     pboxClipped->x2 - pboxClipped->x1,
				     pboxClipped->y2 - pboxClipped->y1,
				     pPix->devPrivate.ptr, pixWidth,
				     width, height, xrot, yrot,
				     mach32alu[pGC->alu], pGC->planemask);
		    pboxClipped++;
		}
	    }
	    break;
	  case FillStippled:
	    xrot = pDrawable->x + pGC->patOrg.x;
	    yrot = pDrawable->y + pGC->patOrg.y;

	    pPix = pGC->stipple;
	    width = pPix->drawable.width;
	    height = pPix->drawable.height;
	    pixWidth = PixmapBytePad(width, pPix->drawable.depth);

	    pboxClipped = pboxClippedBase;
	    if( pci = DoCacheOpStipple( pPix ) ) {
		while (n--) {
		    mach32CImageStipple( pci, pboxClipped->x1, pboxClipped->y1,
					pboxClipped->x2 - pboxClipped->x1,
					pboxClipped->y2 - pboxClipped->y1,
					xrot, yrot, pGC->fgPixel,
					mach32alu[pGC->alu],pGC->planemask );
		    pboxClipped++;
		}
	    } else {
		while (n--) {
		    mach32ImageStipple(pboxClipped->x1, pboxClipped->y1,
					    pboxClipped->x2 - pboxClipped->x1,
					    pboxClipped->y2 - pboxClipped->y1,
					    pPix->devPrivate.ptr, pixWidth,
					    width, height, xrot, yrot,
					    pGC->fgPixel, 0,
					    mach32alu[pGC->alu],
					    pGC->planemask, 0);
		    pboxClipped++;
		}
	    }
	    break;
	  case FillOpaqueStippled:
	    xrot = pDrawable->x + pGC->patOrg.x;
	    yrot = pDrawable->y + pGC->patOrg.y;

	    pPix = pGC->stipple;
	    width = pPix->drawable.width;
	    height = pPix->drawable.height;
	    pixWidth = PixmapBytePad(width, pPix->drawable.depth);

	    pboxClipped = pboxClippedBase;
	    if( pci = DoCacheOpStipple( pPix ) ) {
		while (n--) {
		    mach32CImageOpStipple( pci, pboxClipped->x1,pboxClipped->y1,
					  pboxClipped->x2 - pboxClipped->x1,
					  pboxClipped->y2 - pboxClipped->y1,
					  xrot, yrot,
					  pGC->fgPixel, pGC->bgPixel,
					  mach32alu[pGC->alu], pGC->planemask );
		    pboxClipped++;
		}
	    } else {
		while (n--) {
		    mach32ImageStipple(pboxClipped->x1, pboxClipped->y1,
					    pboxClipped->x2 - pboxClipped->x1,
					    pboxClipped->y2 - pboxClipped->y1,
					    pPix->devPrivate.ptr, pixWidth,
					    width, height, xrot, yrot,
					    pGC->fgPixel, pGC->bgPixel,
					    mach32alu[pGC->alu],
					    pGC->planemask, 1);
		    pboxClipped++;
		}
	    }
	    break;
	}
    }
    if (pboxClippedBase != stackRects)
    	DEALLOCATE_LOCAL(pboxClippedBase);
}