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/*
* Acceleration for the Creator and Creator3D framebuffer - Circle rops.
*
* Copyright (C) 1999 David S. Miller (davem@redhat.com)
* Copyright (C) 1999 Jakub Jelinek (jakub@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_circle.c,v 1.2 2000/05/23 04:47:44 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 "cfb8_32wid.h"
#include "mi.h"
#include "mifillarc.h"
/* Wheee, circles... */
static void
CreatorFillEllipseSolid(DrawablePtr pDrawable, GCPtr pGC, xArc *arc)
{
WindowPtr pWin = (WindowPtr) pDrawable;
FFBPtr pFfb = GET_FFB_FROM_SCREEN(pDrawable->pScreen);
CreatorPrivGCPtr gcPriv = CreatorGetGCPrivate (pGC);
ffb_fbcPtr ffb = pFfb->regs;
miFillArcRec info;
int x, y, e, yk, xk, ym, xm, dx, dy, xorg, yorg, slw;
/* Get the RP ready. */
if(gcPriv->stipple == NULL) {
FFB_ATTR_GC(pFfb, pGC, pWin,
FFB_PPC_APE_DISABLE | FFB_PPC_CS_CONST,
FFB_DRAWOP_RECTANGLE);
} 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_RECTANGLE);
fbc = FFB_FBC_WIN(pWin);
fbc = (fbc & ~FFB_FBC_XE_MASK) | FFB_FBC_XE_OFF;
FFB_WRITE_FBC(pFfb, ffb, fbc);
}
/* Start computing the rects. */
miFillArcSetup(arc, &info);
MIFILLARCSETUP();
if(pGC->miTranslate) {
xorg += pDrawable->x;
yorg += pDrawable->y;
}
while(y > 0) {
MIFILLARCSTEP(slw);
if(slw > 0) {
/* Render. */
FFBFifo(pFfb, 4);
FFB_WRITE64(&ffb->by, yorg - y, xorg - x);
FFB_WRITE64_2(&ffb->bh, 1, slw);
if(miFillArcLower(slw)) {
FFBFifo(pFfb, 4);
FFB_WRITE64(&ffb->by, yorg + y + dy, xorg - x);
FFB_WRITE64_2(&ffb->bh, 1, slw);
}
}
}
pFfb->rp_active = 1;
FFBSync(pFfb, ffb);
}
#define ADDSPAN(l,r) \
if (r >= l) { \
FFBFifo(pFfb, 4); \
FFB_WRITE64(&ffb->by, ya, l); \
FFB_WRITE64_2(&ffb->bh, 1, r - l + 1); \
}
#define ADDSLICESPANS(flip) \
if (!flip) \
{ \
ADDSPAN(xl, xr); \
} \
else \
{ \
xc = xorg - x; \
ADDSPAN(xc, xr); \
xc += slw - 1; \
ADDSPAN(xl, xc); \
}
static void
CreatorFillArcSliceSolid(DrawablePtr pDrawable, GCPtr pGC, xArc *arc)
{
WindowPtr pWin = (WindowPtr) pDrawable;
FFBPtr pFfb = GET_FFB_FROM_SCREEN(pDrawable->pScreen);
CreatorPrivGCPtr gcPriv = CreatorGetGCPrivate (pGC);
ffb_fbcPtr ffb = pFfb->regs;
miFillArcRec info;
miArcSliceRec slice;
int x, y, e, yk, xk, ym, xm, dx, dy, xorg, yorg, slw;
int ya, xl, xr, xc;
/* Get the RP ready. */
if(gcPriv->stipple == NULL) {
FFB_ATTR_GC(pFfb, pGC, pWin,
FFB_PPC_APE_DISABLE | FFB_PPC_CS_CONST,
FFB_DRAWOP_RECTANGLE);
} 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_RECTANGLE);
fbc = FFB_FBC_WIN(pWin);
fbc = (fbc & ~FFB_FBC_XE_MASK) | FFB_FBC_XE_OFF;
FFB_WRITE_FBC(pFfb, ffb, fbc);
FFB_WRITE_FBC(pFfb, ffb, FFB_FBC_WIN(pWin));
}
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 += pDrawable->x;
yorg += pDrawable->y;
slice.edge1.x += pDrawable->x;
slice.edge2.x += pDrawable->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);
}
}
pFfb->rp_active = 1;
FFBSync(pFfb, ffb);
}
void
CreatorPolyFillArcSolid (DrawablePtr pDrawable, GCPtr pGC, int narcs, xArc *parcs)
{
RegionPtr cclip;
xArc *arc;
BoxRec box;
int i, x2, y2;
FFBLOG(("CreatorPolyFillArcSolid: narcs(%d)\n", narcs));
cclip = cfbGetCompositeClip(pGC);
for(arc = parcs, i = narcs; --i >= 0; arc++) {
if(miFillArcEmpty(arc))
continue;
if(miCanFillArc(arc)) {
box.x1 = arc->x + pDrawable->x;
box.y1 = arc->y + pDrawable->y;
box.x2 = x2 = box.x1 + (int)arc->width + 1;
box.y2 = y2 = box.y1 + (int)arc->height + 1;
if((x2 & ~0x7ff) == 0 &&
(y2 & ~0x7ff) == 0 &&
(RECT_IN_REGION(pDrawable->pScreen, cclip, &box) == rgnIN)) {
if(arc->angle2 >= FULLCIRCLE ||
arc->angle2 <= -FULLCIRCLE)
CreatorFillEllipseSolid(pDrawable, pGC, arc);
else
CreatorFillArcSliceSolid(pDrawable, pGC, arc);
continue;
}
}
/* Use slow mi code if we can't handle it simply. */
miPolyFillArc(pDrawable, pGC, 1, arc);
}
}
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