/* $XConsortium: mach64orect.c,v 1.2 95/01/16 13:16:34 kaleb Exp $ */ /* $XFree86: xc/programs/Xserver/hw/xfree86/accel/mach64/mach64orect.c,v 3.2 1995/01/28 15:53:33 dawes Exp $ */ /*********************************************************** Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts, and the Massachusetts Institute of Technology, Cambridge, Massachusetts. Copyright 1993,1994 by Kevin E. Martin, Chapel Hill, North Carolina. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the names of Digital or MIT not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. DIGITAL AND KEVIN E. MARTIN AND RICKARD E. FAITH AND CRAIG E. GROESCHEL DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL OR KEVIN E. MARTIN OR RICKARD E. FAITH OR CRAIG E. GROESCHEL 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 Mach64 by Kevin E. Martin (martin@cs.unc.edu) ******************************************************************/ #include "X.h" #include "gcstruct.h" #include "window.h" #include "pixmapstr.h" #include "scrnintstr.h" #include "windowstr.h" #include "cfb.h" #include "mach64.h" void mach64PolyRectangle (pDrawable, pGC, nRectsInit, pRectsInit) DrawablePtr pDrawable; /* Pointer to current drawable */ GCPtr pGC; /* Pointer to current GC */ int nRectsInit; /* Number of rectangles to display */ xRectangle *pRectsInit; /* List of rectangles to display */ { int nClipRects; /* number of clip rectangles */ BoxPtr pClipRects; /* points to the list of clip rects */ int xOrigin; /* Drawables x origin */ int yOrigin; /* Drawables x origin */ cfbPrivGC *pGCPriv; /* pointer to private GC */ xRectangle *pRect; /* list of rects */ int nRects; /* running count of number of rects */ int origX1, origY1; /* original rectangle's U/L corner */ int origX2, origY2; /* original rectangle's L/R corner */ int clippedX1; /* clipped rectangle's left x */ int clippedY1; /* clipped rectangle's top y */ int clippedX2; /* clipped rectangle's right x */ int clippedY2; /* clipped rectangle's bottom y */ int clipXMin; /* upper left corner of clip rect */ int clipYMin; /* upper left corner of clip rect */ int clipXMax; /* lower right corner of clip rect */ int clipYMax; /* lower right corner of clip rect */ int width, height; /* width and height of rect */ if ((pGC->lineStyle != LineSolid) || (pGC->fillStyle != FillSolid) || (pGC->lineWidth != 0) || (!xf86VTSema)) { miPolyRectangle(pDrawable, pGC, nRectsInit, pRectsInit); return; } pGCPriv = (cfbPrivGC *)(pGC->devPrivates[cfbGCPrivateIndex].ptr); xOrigin = pDrawable->x; yOrigin = pDrawable->y; WaitQueue(4); regw(DP_FRGD_CLR, pGC->fgPixel); regw(DP_MIX, (mach64alu[pGC->alu] << 16) | MIX_DST); regw(DP_WRITE_MASK, pGC->planemask); regw(DP_SRC, FRGD_SRC_FRGD_CLR); for ( nClipRects = REGION_NUM_RECTS(pGCPriv->pCompositeClip), pClipRects = REGION_RECTS(pGCPriv->pCompositeClip); nClipRects > 0; nClipRects--, pClipRects++ ) { clipYMin = pClipRects->y1; clipYMax = pClipRects->y2 - 1; clipXMin = pClipRects->x1; clipXMax = pClipRects->x2 - 1; for (pRect = pRectsInit, nRects = nRectsInit; nRects > 0; nRects--, pRect++ ) { /* translate rectangle data over to the drawable */ origX1 = pRect->x + xOrigin; origY1 = pRect->y + yOrigin; origX2 = origX1 + pRect->width; origY2 = origY1 + pRect->height; /* reject entire rectangle if completely outside clip rect */ if ((origX1 > clipXMax) || (origX2 < clipXMin) || (origY1 > clipYMax) || (origY2 < clipYMin)) { continue; } /* clip the rectangle */ clippedX1 = max (origX1, clipXMin); clippedX2 = min (origX2, clipXMax); clippedY1 = max (origY1, clipYMin); clippedY2 = min (origY2, clipYMax); width = clippedX2 - clippedX1 + 1; /* use bitblt to draw top edge if not clipped */ if (origY1 >= clipYMin) { WaitQueue(3); regw(DST_CNTL, (DST_X_LEFT_TO_RIGHT | DST_Y_TOP_TO_BOTTOM)); regw(DST_Y_X, ((clippedX1 << 16) | clippedY1)); regw(DST_HEIGHT_WIDTH, ((width << 16) | 1)); /* don't overwrite corner */ clippedY1++; } /* use bitblt to draw bottom edge if not clipped */ if ((origY2 <= clipYMax) && (origY1 != origY2)) { WaitQueue(3); regw(DST_CNTL, (DST_X_LEFT_TO_RIGHT | DST_Y_TOP_TO_BOTTOM)); regw(DST_Y_X, ((clippedX1 << 16) | clippedY2)); regw(DST_HEIGHT_WIDTH, ((width << 16) | 1)); /* don't overwrite corner */ clippedY2--; } /* draw vertical edges using lines if not clipped out */ if (origX1 >= clipXMin) { WaitQueue(6); regw(DST_Y_X, (clippedX1 << 16) | clippedY1); regw(DST_CNTL, 0x00000007); regw(DST_BRES_ERR, (-(clippedY2 - clippedY1))); regw(DST_BRES_INC, 0x00000000); regw(DST_BRES_DEC, (0x3ffff - (2 * (clippedY2 - clippedY1)))); regw(DST_BRES_LNTH, ((clippedY2 - clippedY1) + 2)); } if ((origX2 <= clipXMax) && (origX2 != origX1)) { WaitQueue(6); regw(DST_Y_X, (clippedX2 << 16) | clippedY1); regw(DST_CNTL, 0x00000007); regw(DST_BRES_ERR, (-(clippedY2 - clippedY1))); regw(DST_BRES_INC, 0x00000000); regw(DST_BRES_DEC, (0x3ffff - (2 * (clippedY2 - clippedY1)))); regw(DST_BRES_LNTH, ((clippedY2 - clippedY1) + 2)); } } } WaitQueue(1); regw(DST_CNTL, (DST_X_LEFT_TO_RIGHT | DST_Y_TOP_TO_BOTTOM)); WaitIdleEmpty(); }