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/*
* Acceleration for the Creator and Creator3D framebuffer - Line rops.
*
* Copyright (C) 1998,1999 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_line.c,v 1.1 2000/05/18 23:21:37 dawes Exp $ */
#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 "miline.h"
/* The scheme here is similar as for segments, except that
* if there are any out of range coordinate, we fully punt
* and do all of the pieces in software. This is as to
* avoid complexity in final line capping, sloped lines, line
* patterns etc.
*/
#define IN_RANGE(_extent, _x, _y) \
((_x) >= (_extent)->x1 && (_x) < (_extent)->x2 && \
(_y) >= (_extent)->y1 && (_y) < (_extent)->y2)
void
CreatorPolylines (DrawablePtr pDrawable, GCPtr pGC, int mode, int nptInit, DDXPointPtr pptInit)
{
WindowPtr pWin = (WindowPtr) pDrawable;
CreatorPrivGCPtr gcPriv = CreatorGetGCPrivate (pGC);
FFBPtr pFfb = GET_FFB_FROM_SCREEN (pGC->pScreen);
ffb_fbcPtr ffb = pFfb->regs;
DDXPointPtr ppt;
BoxPtr extent;
int x, y, xorg, yorg, npt, capLast;
npt = nptInit;
if (npt <= 1)
return;
ppt = pptInit;
xorg = pDrawable->x;
yorg = pDrawable->y;
x = ppt->x + xorg;
y = ppt->y + yorg;
extent = REGION_RECTS(cfbGetCompositeClip(pGC));
if (!IN_RANGE(extent, x, y))
goto punt_rest;
ppt++;
while(npt--) {
if (mode == CoordModeOrigin) {
x = ppt->x + xorg;
y = ppt->y + yorg;
} else {
x += ppt->x;
y += ppt->y;
}
if (!IN_RANGE(extent, x, y))
goto punt_rest;
ppt++;
}
FFBLOG(("CreatorPolylines: npt(%d) lpat(%08x) alu(%x) pmsk(%08x)\n",
npt, gcPriv->linepat, pGC->alu, pGC->planemask));
if(gcPriv->stipple == NULL) {
FFB_ATTR_GC(pFfb, pGC, pWin,
FFB_PPC_APE_DISABLE | FFB_PPC_CS_CONST,
FFB_DRAWOP_BRLINEOPEN);
} 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_BRLINEOPEN);
fbc = FFB_FBC_WIN(pWin);
fbc = (fbc & ~FFB_FBC_XE_MASK) | FFB_FBC_XE_OFF;
FFB_WRITE_FBC(pFfb, ffb, fbc);
}
pFfb->rp_active = 1;
ppt = pptInit;
npt = nptInit;
x = ppt->x + xorg;
y = ppt->y + yorg;
FFBFifo(pFfb, 3);
ffb->lpat = gcPriv->linepat;
ffb->by = y;
ffb->bx = x;
ppt++;
npt--;
capLast = pGC->capStyle != CapNotLast;
if (mode == CoordModeOrigin) {
if (capLast)
npt--;
if (pFfb->has_brline_bug) {
while (npt--) {
x = ppt->x + xorg;
y = ppt->y + yorg;
ppt++;
FFBFifo(pFfb, 3);
ffb->ppc = 0;
FFB_WRITE64(&ffb->bh, y, x);
}
} else {
while (npt--) {
x = ppt->x + xorg;
y = ppt->y + yorg;
ppt++;
FFBFifo(pFfb, 2);
FFB_WRITE64(&ffb->bh, y, x);
}
}
if (capLast) {
register int x2, y2;
x2 = ppt->x + xorg;
y2 = ppt->y + yorg;
FFB_WRITE_DRAWOP(pFfb, ffb, FFB_DRAWOP_BRLINECAP);
FFBFifo(pFfb, 5);
ffb->ppc = 0;
FFB_WRITE64(&ffb->by, y, x);
FFB_WRITE64_2(&ffb->bh, y2, x2);
}
} else {
if (capLast)
npt--;
if (pFfb->has_brline_bug) {
while (npt--) {
x += ppt->x;
y += ppt->y;
ppt++;
FFBFifo(pFfb, 3);
ffb->ppc = 0;
FFB_WRITE64(&ffb->bh, y, x);
}
} else {
while (npt--) {
x += ppt->x;
y += ppt->y;
ppt++;
FFBFifo(pFfb, 2);
FFB_WRITE64(&ffb->bh, y, x);
}
}
if (capLast) {
register int x2, y2;
x2 = x + ppt->x;
y2 = y + ppt->y;
FFB_WRITE_DRAWOP(pFfb, ffb, FFB_DRAWOP_BRLINECAP);
FFBFifo(pFfb, 5);
ffb->ppc = 0;
FFB_WRITE64(&ffb->by, y, x);
FFB_WRITE64_2(&ffb->bh, y2, x2);
}
}
FFBSync(pFfb, ffb);
return;
punt_rest:
gcPriv->Polylines(pDrawable, pGC, mode, nptInit, pptInit);
return;
}
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