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/*
* Acceleration for the Creator and Creator3D framebuffer - Polygon rops.
*
* Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
* Copyright (C) 1999 David S. Miller (davem@redhat.com)
*
* 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
* JAKUB JELINEK OR DAVID MILLER 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.
*
*/
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/sunffb/ffb_plygon.c,v 1.1 2000/05/18 23:21:37 dawes Exp $ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "ffb.h"
#include "ffb_regs.h"
#include "ffb_rcache.h"
#include "ffb_fifo.h"
#include "ffb_stip.h"
#include "pixmapstr.h"
#include "scrnintstr.h"
#define PSZ 8
#include "cfb.h"
#undef PSZ
#include "cfb32.h"
#include "mi.h"
void
CreatorFillPolygon (DrawablePtr pDrawable, GCPtr pGC, int shape, int mode, int count, DDXPointPtr ppt)
{
WindowPtr pWin = (WindowPtr) pDrawable;
CreatorPrivGCPtr gcPriv = CreatorGetGCPrivate (pGC);
FFBPtr pFfb = GET_FFB_FROM_SCREEN (pGC->pScreen);
ffb_fbcPtr ffb = pFfb->regs;
BoxRec box;
int lx, rx, ty, by;
int t, b, i, j, k, l, tt;
int xy[12] FFB_ALIGN64;
int xOrg, yOrg;
FFBLOG(("CreatorFillPolygon: ALU(%x) PMSK(%08x) shape(%d) mode(%d) count(%d)\n",
pGC->alu, pGC->planemask, shape, mode, count));
if (count < 3)
return;
if (shape != Convex && count > 3) {
miFillPolygon (pDrawable, pGC, shape, mode, count, ppt);
return;
}
xOrg = pDrawable->x;
yOrg = pDrawable->y;
ppt->x += xOrg;
ppt->y += yOrg;
lx = ppt->x;
rx = ppt->x;
ty = ppt->y;
by = ppt->y;
t = b = 0;
tt = 1;
for (i = 1; i < count; i++) {
if (mode == CoordModeOrigin) {
ppt[i].x += xOrg;
ppt[i].y += yOrg;
} else {
ppt[i].x += ppt[i-1].x;
ppt[i].y += ppt[i-1].y;
}
if (ppt[i].x < lx)
lx = ppt[i].x;
if (ppt[i].x > rx)
rx = ppt[i].x;
if (ppt[i].y < ty) {
ty = ppt[i].y;
t = i;
tt = 1;
} else if (ppt[i].y == ty)
tt++;
if (ppt[i].y > by) {
by = ppt[i].y;
b = i;
}
}
if (tt > 2) {
miFillConvexPoly(pDrawable, pGC, count, ppt);
return;
} else if (tt == 2) {
i = t - 1;
if (i < 0)
i = count - 1;
if (ppt[i].y == ppt[t].y)
t = i;
}
box.x1 = lx;
box.x2 = rx + 1;
box.y1 = ty;
box.y2 = by + 1;
switch (RECT_IN_REGION(pGC->pScreen, cfbGetCompositeClip(pGC), &box)) {
case rgnPART:
miFillConvexPoly(pDrawable, pGC, count, ppt);
case rgnOUT:
return;
}
if(gcPriv->stipple == NULL) {
FFB_ATTR_GC(pFfb, pGC, pWin,
FFB_PPC_APE_DISABLE | FFB_PPC_CS_CONST,
FFB_DRAWOP_POLYGON);
} else {
unsigned int fbc;
FFBSetStipple(pFfb, ffb, gcPriv->stipple,
FFB_PPC_CS_CONST, FFB_PPC_CS_MASK);
FFB_WRITE_PMASK(pFfb, ffb, pGC->planemask);
FFB_WRITE_DRAWOP(pFfb, ffb, FFB_DRAWOP_POLYGON);
fbc = FFB_FBC_WIN(pWin);
fbc = (fbc & ~FFB_FBC_XE_MASK) | FFB_FBC_XE_OFF;
FFB_WRITE_FBC(pFfb, ffb, fbc);
}
xy[0] = ppt[t].y;
xy[1] = ppt[t].x;
j = t + 1;
if (j == count) j = 0;
xy[2] = ppt[j].y;
xy[3] = ppt[j].x;
j = t + 2;
if (j >= count)
j -= count;
for (i = 2 * count - 4; i; i -= k) {
b = 2;
for (k = 0; k < i && k < 8; k+=2) {
xy[4 + k] = ppt[j].y;
xy[4 + k + 1] = ppt[j].x;
if (xy[4 + k] > xy[b])
b = 4 + k;
j++; if (j == count) j = 0;
}
FFBFifo(pFfb, 4 + k);
for (l = 0; l < b - 2; l+=2)
FFB_WRITE64P(&ffb->by, &xy[l]);
FFB_WRITE64P(&ffb->bh, &xy[l]);
for (l+=2; l <= k; l+=2)
FFB_WRITE64P(&ffb->by, &xy[l]);
FFB_WRITE64P(&ffb->ebyi, &xy[l]);
xy[2] = xy[l];
xy[3] = xy[l+1];
}
pFfb->rp_active = 1;
FFBSync(pFfb, ffb);
}
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