/************************************************************ Copyright 1989, 1998 The Open Group Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. 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 OPEN GROUP 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 Open Group 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 Open Group. ********************************************************/ /* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/mga_arc.c,v 1.12tsi Exp $ */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "gcstruct.h" #include "windowstr.h" #include "pixmapstr.h" #include "regionstr.h" #include #include "regionstr.h" #include "mizerarc.h" #include "mi.h" #include "scrnintstr.h" #include "xaa.h" #include "xaalocal.h" #include "xf86.h" #include "xf86_OSproc.h" #include "xf86_ansic.h" #include "xf86Pci.h" #include "mga.h" #include "mga_reg.h" #include "mga_macros.h" /* This is only faster than cfb for stuff other than GXcopy. And even then, only when pci_retries are on. */ #define DRAW_POINT(x, y) { \ tmp = x; \ OUTREG(MGAREG_FXBNDRY, (tmp) | (((tmp) + 1) << 16)); \ OUTREG(MGAREG_YDSTLEN + MGAREG_EXEC, ((y) << 16) | 1); \ } static void MGAZeroArc( DrawablePtr pDraw, GCPtr pGC, xArc *arc ){ int yoffset, dyoffset, x, y, a, b, d, mask, k1, k3, dx, dy, tmp; XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC); ScrnInfoPtr pScrn = infoRec->pScrn; MGAPtr pMga = MGAPTR(pScrn); miZeroArcRec info; Bool do360; DDXPointRec org, orgo; CHECK_DMA_QUIESCENT( pMga, infoRec->pScrn ); (*infoRec->SetupForSolidFill)(infoRec->pScrn, pGC->fgPixel, pGC->alu, pGC->planemask); do360 = miZeroArcSetup(arc, &info, TRUE); org.y = info.yorg + pDraw->y; org.x = 0; orgo.y = info.yorgo + pDraw->y; orgo.x = 0; info.xorg += pDraw->x; info.xorgo += pDraw->x; MIARCSETUP(); yoffset = y ? 1 : 0; dyoffset = 0; mask = info.initialMask; if (!(arc->width & 1)) { WAITFIFO(4); if (mask & 2) DRAW_POINT(info.xorgo, org.y); if (mask & 8) DRAW_POINT(info.xorgo, orgo.y); } if (!info.end.x || !info.end.y) { mask = info.end.mask; info.end = info.altend; } if (do360 && (arc->width == arc->height) && !(arc->width & 1)) { int xoffset = 1; DDXPointRec orghb, orgohb; orghb.y = org.y + info.h; orghb.x = org.x + info.xorg; orgohb.y = orghb.y; orgohb.x = orghb.x - info.h; org.x += info.xorg; orgo.x += info.xorg; orghb.x += info.h; while (1) { WAITFIFO(16); DRAW_POINT(org.x + x, org.y + yoffset); DRAW_POINT(org.x - x, org.y + yoffset); DRAW_POINT(orgo.x - x, orgo.y - yoffset); DRAW_POINT(orgo.x + x, orgo.y - yoffset); if (a < 0) break; DRAW_POINT(orghb.x - y, orghb.y - xoffset); DRAW_POINT(orgohb.x + y, orgohb.y - xoffset); DRAW_POINT(orgohb.x + y, orgohb.y + xoffset); DRAW_POINT(orghb.x - y, orghb.y + xoffset); xoffset ++; MIARCCIRCLESTEP(yoffset ++;); } org.x -= info.xorg; orgo.x -= info.xorg; x = info.w; yoffset = info.h; } else if (do360) { while (y < info.h || x < info.w) { MIARCOCTANTSHIFT(dyoffset = 1;); WAITFIFO(8); DRAW_POINT(org.x + info.xorg + x, org.y + yoffset); DRAW_POINT(org.x + info.xorgo - x, org.y + yoffset); DRAW_POINT(orgo.x + info.xorgo - x, orgo.y - yoffset); DRAW_POINT(orgo.x + info.xorg + x, orgo.y - yoffset); MIARCSTEP(yoffset += dyoffset;, yoffset++;); } } else { while (y < info.h || x < info.w) { MIARCOCTANTSHIFT(dyoffset = 1;); if ((x == info.start.x) || (y == info.start.y)) { mask = info.start.mask; info.start = info.altstart; } WAITFIFO(8); if (mask & 1) DRAW_POINT(org.x + info.xorg + x, org.y + yoffset); if (mask & 2) DRAW_POINT(org.x + info.xorgo - x, org.y + yoffset); if (mask & 4) DRAW_POINT(orgo.x + info.xorgo - x, orgo.y - yoffset); if (mask & 8) DRAW_POINT(orgo.x + info.xorg + x, orgo.y - yoffset); if ((x == info.end.x) || (y == info.end.y)) { mask = info.end.mask; info.end = info.altend; } MIARCSTEP(yoffset += dyoffset;, yoffset++;); } } if ((x == info.start.x) || (y == info.start.y)) mask = info.start.mask; WAITFIFO(4); if (mask & 1) DRAW_POINT(org.x + info.xorg + x, org.y + yoffset); if (mask & 4) DRAW_POINT(orgo.x + info.xorgo - x, orgo.y - yoffset); if (arc->height & 1) { WAITFIFO(4); if (mask & 2) DRAW_POINT(org.x + info.xorgo - x, org.y + yoffset); if (mask & 8) DRAW_POINT(orgo.x + info.xorg + x, orgo.y - yoffset); } SET_SYNC_FLAG(infoRec); } void MGAPolyArcThinSolid ( DrawablePtr pDraw, GCPtr pGC, int narcs, xArc *parcs ){ xArc *arc; BoxRec box; int i, x2, y2; RegionPtr cclip; cclip = pGC->pCompositeClip; if(!REGION_NUM_RECTS(cclip)) return; for (arc = parcs, i = narcs; --i >= 0; arc++) { if (miCanZeroArc(arc)) { box.x1 = arc->x + pDraw->x; box.y1 = arc->y + pDraw->y; x2 = box.x1 + (int)arc->width + 1; box.x2 = x2; y2 = box.y1 + (int)arc->height + 1; box.y2 = y2; if ( (x2 <= MAXSHORT) && (y2 <= MAXSHORT) && (RECT_IN_REGION(pDraw->pScreen, cclip, &box) == rgnIN) ) MGAZeroArc (pDraw, pGC, arc); else miZeroPolyArc(pDraw, pGC, 1, arc); } else miPolyArc(pDraw, pGC, 1, arc); } }