From 5d8e1ad0cd01de0bd0b43dc916c1d39fd293e79d Mon Sep 17 00:00:00 2001 From: marha Date: Fri, 1 Apr 2011 07:17:02 +0000 Subject: libXext xserver libXmu libX11 libXdmcp xextproto libxtrans mesa git update 1 Apr 2011 --- xorg-server/fb/fbseg.c | 1458 ++++++++++++++++++++++++------------------------ 1 file changed, 722 insertions(+), 736 deletions(-) (limited to 'xorg-server/fb/fbseg.c') diff --git a/xorg-server/fb/fbseg.c b/xorg-server/fb/fbseg.c index 8a68857f7..5a458fe51 100644 --- a/xorg-server/fb/fbseg.c +++ b/xorg-server/fb/fbseg.c @@ -1,736 +1,722 @@ -/* - * Copyright © 1998 Keith Packard - * - * 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, and that the name of Keith Packard not be used in - * advertising or publicity pertaining to distribution of the software without - * specific, written prior permission. Keith Packard makes no - * representations about the suitability of this software for any purpose. It - * is provided "as is" without express or implied warranty. - * - * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO - * EVENT SHALL KEITH PACKARD 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. - */ - -#ifdef HAVE_DIX_CONFIG_H -#include -#endif - -#include - -#include "fb.h" -#include "miline.h" - -#define fbBresShiftMask(mask,dir,bpp) ((bpp == FB_STIP_UNIT) ? 0 : \ - ((dir < 0) ? FbStipLeft(mask,bpp) : \ - FbStipRight(mask,bpp))) - -void -fbBresSolid (DrawablePtr pDrawable, - GCPtr pGC, - int dashOffset, - int signdx, - int signdy, - int axis, - int x1, - int y1, - int e, - int e1, - int e3, - int len) -{ - FbStip *dst; - FbStride dstStride; - int dstBpp; - int dstXoff, dstYoff; - FbGCPrivPtr pPriv = fbGetGCPrivate (pGC); - FbStip and = (FbStip) pPriv->and; - FbStip xor = (FbStip) pPriv->xor; - FbStip mask, mask0; - FbStip bits; - - fbGetStipDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff); - dst += ((y1 + dstYoff) * dstStride); - x1 = (x1 + dstXoff) * dstBpp; - dst += x1 >> FB_STIP_SHIFT; - x1 &= FB_STIP_MASK; - mask0 = FbStipMask(0, dstBpp); - mask = FbStipRight (mask0, x1); - if (signdx < 0) - mask0 = FbStipRight (mask0, FB_STIP_UNIT - dstBpp); - if (signdy < 0) - dstStride = -dstStride; - if (axis == X_AXIS) - { - bits = 0; - while (len--) - { - bits |= mask; - mask = fbBresShiftMask(mask,signdx,dstBpp); - if (!mask) - { - WRITE(dst, FbDoMaskRRop (READ(dst), and, xor, bits)); - bits = 0; - dst += signdx; - mask = mask0; - } - e += e1; - if (e >= 0) - { - WRITE(dst, FbDoMaskRRop (READ(dst), and, xor, bits)); - bits = 0; - dst += dstStride; - e += e3; - } - } - if (bits) - WRITE(dst, FbDoMaskRRop (READ(dst), and, xor, bits)); - } - else - { - while (len--) - { - WRITE(dst, FbDoMaskRRop (READ(dst), and, xor, mask)); - dst += dstStride; - e += e1; - if (e >= 0) - { - e += e3; - mask = fbBresShiftMask(mask,signdx,dstBpp); - if (!mask) - { - dst += signdx; - mask = mask0; - } - } - } - } - - fbFinishAccess (pDrawable); -} - -void -fbBresDash (DrawablePtr pDrawable, - GCPtr pGC, - int dashOffset, - int signdx, - int signdy, - int axis, - int x1, - int y1, - int e, - int e1, - int e3, - int len) -{ - FbStip *dst; - FbStride dstStride; - int dstBpp; - int dstXoff, dstYoff; - FbGCPrivPtr pPriv = fbGetGCPrivate (pGC); - FbStip and = (FbStip) pPriv->and; - FbStip xor = (FbStip) pPriv->xor; - FbStip bgand = (FbStip) pPriv->bgand; - FbStip bgxor = (FbStip) pPriv->bgxor; - FbStip mask, mask0; - FbDashDeclare; - int dashlen; - Bool even; - Bool doOdd; - - fbGetStipDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff); - doOdd = pGC->lineStyle == LineDoubleDash; - - FbDashInit (pGC, pPriv, dashOffset, dashlen, even); - - dst += ((y1 + dstYoff) * dstStride); - x1 = (x1 + dstXoff) * dstBpp; - dst += x1 >> FB_STIP_SHIFT; - x1 &= FB_STIP_MASK; - mask0 = FbStipMask(0, dstBpp); - mask = FbStipRight (mask0, x1); - if (signdx < 0) - mask0 = FbStipRight (mask0, FB_STIP_UNIT - dstBpp); - if (signdy < 0) - dstStride = -dstStride; - while (len--) - { - if (even) - WRITE(dst, FbDoMaskRRop (READ(dst), and, xor, mask)); - else if (doOdd) - WRITE(dst, FbDoMaskRRop (READ(dst), bgand, bgxor, mask)); - if (axis == X_AXIS) - { - mask = fbBresShiftMask(mask,signdx,dstBpp); - if (!mask) - { - dst += signdx; - mask = mask0; - } - e += e1; - if (e >= 0) - { - dst += dstStride; - e += e3; - } - } - else - { - dst += dstStride; - e += e1; - if (e >= 0) - { - e += e3; - mask = fbBresShiftMask(mask,signdx,dstBpp); - if (!mask) - { - dst += signdx; - mask = mask0; - } - } - } - FbDashStep (dashlen, even); - } - - fbFinishAccess (pDrawable); -} - -void -fbBresFill (DrawablePtr pDrawable, - GCPtr pGC, - int dashOffset, - int signdx, - int signdy, - int axis, - int x1, - int y1, - int e, - int e1, - int e3, - int len) -{ - while (len--) - { - fbFill (pDrawable, pGC, x1, y1, 1, 1); - if (axis == X_AXIS) - { - x1 += signdx; - e += e1; - if (e >= 0) - { - e += e3; - y1 += signdy; - } - } - else - { - y1 += signdy; - e += e1; - if (e >= 0) - { - e += e3; - x1 += signdx; - } - } - } -} - -static void -fbSetFg (DrawablePtr pDrawable, - GCPtr pGC, - Pixel fg) -{ - if (fg != pGC->fgPixel) - { - ChangeGCVal val; - val.val = fg; - ChangeGC (NullClient, pGC, GCForeground, &val); - ValidateGC (pDrawable, pGC); - } -} - -void -fbBresFillDash (DrawablePtr pDrawable, - GCPtr pGC, - int dashOffset, - int signdx, - int signdy, - int axis, - int x1, - int y1, - int e, - int e1, - int e3, - int len) -{ - FbGCPrivPtr pPriv = fbGetGCPrivate (pGC); - FbDashDeclare; - int dashlen; - Bool even; - Bool doOdd; - Bool doBg; - Pixel fg, bg; - - fg = pGC->fgPixel; - bg = pGC->bgPixel; - - /* whether to fill the odd dashes */ - doOdd = pGC->lineStyle == LineDoubleDash; - /* whether to switch fg to bg when filling odd dashes */ - doBg = doOdd && (pGC->fillStyle == FillSolid || - pGC->fillStyle == FillStippled); - - /* compute current dash position */ - FbDashInit (pGC, pPriv, dashOffset, dashlen, even); - - while (len--) - { - if (even || doOdd) - { - if (doBg) - { - if (even) - fbSetFg (pDrawable, pGC, fg); - else - fbSetFg (pDrawable, pGC, bg); - } - fbFill (pDrawable, pGC, x1, y1, 1, 1); - } - if (axis == X_AXIS) - { - x1 += signdx; - e += e1; - if (e >= 0) - { - e += e3; - y1 += signdy; - } - } - else - { - y1 += signdy; - e += e1; - if (e >= 0) - { - e += e3; - x1 += signdx; - } - } - FbDashStep (dashlen, even); - } - if (doBg) - fbSetFg (pDrawable, pGC, fg); -} - -#ifdef FB_24BIT -static void -fbBresSolid24RRop (DrawablePtr pDrawable, - GCPtr pGC, - int dashOffset, - int signdx, - int signdy, - int axis, - int x1, - int y1, - int e, - int e1, - int e3, - int len) -{ - FbStip *dst; - FbStride dstStride; - int dstBpp; - int dstXoff, dstYoff; - FbGCPrivPtr pPriv = fbGetGCPrivate (pGC); - FbStip and = pPriv->and; - FbStip xor = pPriv->xor; - FbStip leftMask, rightMask; - int nl; - FbStip *d; - int x; - int rot; - FbStip andT, xorT; - - fbGetStipDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff); - dst += ((y1 + dstYoff) * dstStride); - x1 = (x1 + dstXoff) * 24; - if (signdy < 0) - dstStride = -dstStride; - signdx *= 24; - while (len--) - { - d = dst + (x1 >> FB_STIP_SHIFT); - x = x1 & FB_STIP_MASK; - rot = FbFirst24Rot (x); - andT = FbRot24Stip(and,rot); - xorT = FbRot24Stip(xor,rot); - FbMaskStip (x, 24, leftMask, nl, rightMask); - if (leftMask) - { - WRITE(d, FbDoMaskRRop (READ(d), andT, xorT, leftMask)); - d++; - andT = FbNext24Stip (andT); - xorT = FbNext24Stip (xorT); - } - if (rightMask) - WRITE(d, FbDoMaskRRop (READ(d), andT, xorT, rightMask)); - if (axis == X_AXIS) - { - x1 += signdx; - e += e1; - if (e >= 0) - { - e += e3; - dst += dstStride; - } - } - else - { - dst += dstStride; - e += e1; - if (e >= 0) - { - e += e3; - x1 += signdx; - } - } - } - - fbFinishAccess (pDrawable); -} - -static void -fbBresDash24RRop (DrawablePtr pDrawable, - GCPtr pGC, - int dashOffset, - int signdx, - int signdy, - int axis, - int x1, - int y1, - int e, - int e1, - int e3, - int len) -{ - FbStip *dst; - FbStride dstStride; - int dstBpp; - int dstXoff, dstYoff; - FbGCPrivPtr pPriv = fbGetGCPrivate (pGC); - FbStip andT, xorT; - FbStip fgand = pPriv->and; - FbStip fgxor = pPriv->xor; - FbStip bgand = pPriv->bgand; - FbStip bgxor = pPriv->bgxor; - FbStip leftMask, rightMask; - int nl; - FbStip *d; - int x; - int rot; - FbDashDeclare; - int dashlen; - Bool even; - Bool doOdd; - - fbGetStipDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff); - doOdd = pGC->lineStyle == LineDoubleDash; - - /* compute current dash position */ - FbDashInit(pGC, pPriv, dashOffset, dashlen, even); - - dst += ((y1 + dstYoff) * dstStride); - x1 = (x1 + dstXoff) * 24; - if (signdy < 0) - dstStride = -dstStride; - signdx *= 24; - while (len--) - { - if (even || doOdd) - { - if (even) - { - andT = fgand; - xorT = fgxor; - } - else - { - andT = bgand; - xorT = bgxor; - } - d = dst + (x1 >> FB_STIP_SHIFT); - x = x1 & FB_STIP_MASK; - rot = FbFirst24Rot (x); - andT = FbRot24Stip (andT, rot); - xorT = FbRot24Stip (xorT, rot); - FbMaskStip (x, 24, leftMask, nl, rightMask); - if (leftMask) - { - WRITE(d, FbDoMaskRRop (READ(d), andT, xorT, leftMask)); - d++; - andT = FbNext24Stip (andT); - xorT = FbNext24Stip (xorT); - } - if (rightMask) - WRITE(d, FbDoMaskRRop (READ(d), andT, xorT, rightMask)); - } - if (axis == X_AXIS) - { - x1 += signdx; - e += e1; - if (e >= 0) - { - e += e3; - dst += dstStride; - } - } - else - { - dst += dstStride; - e += e1; - if (e >= 0) - { - e += e3; - x1 += signdx; - } - } - FbDashStep (dashlen, even); - } - - fbFinishAccess (pDrawable); -} -#endif - -/* - * For drivers that want to bail drawing some lines, this - * function takes care of selecting the appropriate rasterizer - * based on the contents of the specified GC. - */ - -FbBres * -fbSelectBres (DrawablePtr pDrawable, - GCPtr pGC) -{ - FbGCPrivPtr pPriv = fbGetGCPrivate(pGC); - int dstBpp = pDrawable->bitsPerPixel; - FbBres * bres; - - if (pGC->lineStyle == LineSolid) - { - bres = fbBresFill; - if (pGC->fillStyle == FillSolid) - { - bres = fbBresSolid; -#ifdef FB_24BIT - if (dstBpp == 24) - bres = fbBresSolid24RRop; -#endif -#ifndef FBNOPIXADDR - if (pPriv->and == 0) - { - switch (dstBpp) { - case 8: bres = fbBresSolid8; break; - case 16: bres = fbBresSolid16; break; -#ifdef FB_24BIT - case 24: bres = fbBresSolid24; break; -#endif - case 32: bres = fbBresSolid32; break; - } - } -#endif - } - } - else - { - bres = fbBresFillDash; - if (pGC->fillStyle == FillSolid) - { - bres = fbBresDash; -#ifdef FB_24BIT - if (dstBpp == 24) - bres = fbBresDash24RRop; -#endif -#ifndef FBNOPIXADDR - if (pPriv->and == 0 && - (pGC->lineStyle == LineOnOffDash || pPriv->bgand == 0)) - { - switch (dstBpp) { - case 8: bres = fbBresDash8; break; - case 16: bres = fbBresDash16; break; -#ifdef FB_24BIT - case 24: bres = fbBresDash24; break; -#endif - case 32: bres = fbBresDash32; break; - } - } -#endif - } - } - return bres; -} - -void -fbBres (DrawablePtr pDrawable, - GCPtr pGC, - int dashOffset, - int signdx, - int signdy, - int axis, - int x1, - int y1, - int e, - int e1, - int e3, - int len) -{ - (*fbSelectBres (pDrawable, pGC)) (pDrawable, pGC, dashOffset, - signdx, signdy, axis, x1, y1, - e, e1, e3, len); -} - -void -fbSegment (DrawablePtr pDrawable, - GCPtr pGC, - int x1, - int y1, - int x2, - int y2, - Bool drawLast, - int *dashOffset) -{ - FbBres * bres; - RegionPtr pClip = fbGetCompositeClip(pGC); - BoxPtr pBox; - int nBox; - int adx; /* abs values of dx and dy */ - int ady; - int signdx; /* sign of dx and dy */ - int signdy; - int e, e1, e2, e3; /* bresenham error and increments */ - int len; /* length of segment */ - int axis; /* major axis */ - int octant; - int dashoff; - int doff; - unsigned int bias = miGetZeroLineBias(pDrawable->pScreen); - unsigned int oc1; /* outcode of point 1 */ - unsigned int oc2; /* outcode of point 2 */ - - nBox = RegionNumRects (pClip); - pBox = RegionRects (pClip); - - bres = fbSelectBres (pDrawable, pGC); - - CalcLineDeltas(x1, y1, x2, y2, adx, ady, signdx, signdy, - 1, 1, octant); - - if (adx > ady) - { - axis = X_AXIS; - e1 = ady << 1; - e2 = e1 - (adx << 1); - e = e1 - adx; - len = adx; - } - else - { - axis = Y_AXIS; - e1 = adx << 1; - e2 = e1 - (ady << 1); - e = e1 - ady; - SetYMajorOctant(octant); - len = ady; - } - - FIXUP_ERROR (e, octant, bias); - - /* - * Adjust error terms to compare against zero - */ - e3 = e2 - e1; - e = e - e1; - - /* we have bresenham parameters and two points. - all we have to do now is clip and draw. - */ - - if (drawLast) - len++; - dashoff = *dashOffset; - *dashOffset = dashoff + len; - while(nBox--) - { - oc1 = 0; - oc2 = 0; - OUTCODES(oc1, x1, y1, pBox); - OUTCODES(oc2, x2, y2, pBox); - if ((oc1 | oc2) == 0) - { - (*bres) (pDrawable, pGC, dashoff, - signdx, signdy, axis, x1, y1, - e, e1, e3, len); - break; - } - else if (oc1 & oc2) - { - pBox++; - } - else - { - int new_x1 = x1, new_y1 = y1, new_x2 = x2, new_y2 = y2; - int clip1 = 0, clip2 = 0; - int clipdx, clipdy; - int err; - - if (miZeroClipLine(pBox->x1, pBox->y1, pBox->x2-1, - pBox->y2-1, - &new_x1, &new_y1, &new_x2, &new_y2, - adx, ady, &clip1, &clip2, - octant, bias, oc1, oc2) == -1) - { - pBox++; - continue; - } - - if (axis == X_AXIS) - len = abs(new_x2 - new_x1); - else - len = abs(new_y2 - new_y1); - if (clip2 != 0 || drawLast) - len++; - if (len) - { - /* unwind bresenham error term to first point */ - doff = dashoff; - err = e; - if (clip1) - { - clipdx = abs(new_x1 - x1); - clipdy = abs(new_y1 - y1); - if (axis == X_AXIS) - { - doff += clipdx; - err += e3 * clipdy + e1 * clipdx; - } - else - { - doff += clipdy; - err += e3 * clipdx + e1 * clipdy; - } - } - (*bres) (pDrawable, pGC, doff, - signdx, signdy, axis, new_x1, new_y1, - err, e1, e3, len); - } - pBox++; - } - } /* while (nBox--) */ -} +/* + * Copyright © 1998 Keith Packard + * + * 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, and that the name of Keith Packard not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL KEITH PACKARD 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. + */ + +#ifdef HAVE_DIX_CONFIG_H +#include +#endif + +#include + +#include "fb.h" +#include "miline.h" + +#define fbBresShiftMask(mask,dir,bpp) ((bpp == FB_STIP_UNIT) ? 0 : \ + ((dir < 0) ? FbStipLeft(mask,bpp) : \ + FbStipRight(mask,bpp))) + +void +fbBresSolid (DrawablePtr pDrawable, + GCPtr pGC, + int dashOffset, + int signdx, + int signdy, + int axis, + int x1, + int y1, + int e, + int e1, + int e3, + int len) +{ + FbStip *dst; + FbStride dstStride; + int dstBpp; + int dstXoff, dstYoff; + FbGCPrivPtr pPriv = fbGetGCPrivate (pGC); + FbStip and = (FbStip) pPriv->and; + FbStip xor = (FbStip) pPriv->xor; + FbStip mask, mask0; + FbStip bits; + + fbGetStipDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff); + dst += ((y1 + dstYoff) * dstStride); + x1 = (x1 + dstXoff) * dstBpp; + dst += x1 >> FB_STIP_SHIFT; + x1 &= FB_STIP_MASK; + mask0 = FbStipMask(0, dstBpp); + mask = FbStipRight (mask0, x1); + if (signdx < 0) + mask0 = FbStipRight (mask0, FB_STIP_UNIT - dstBpp); + if (signdy < 0) + dstStride = -dstStride; + if (axis == X_AXIS) + { + bits = 0; + while (len--) + { + bits |= mask; + mask = fbBresShiftMask(mask,signdx,dstBpp); + if (!mask) + { + WRITE(dst, FbDoMaskRRop (READ(dst), and, xor, bits)); + bits = 0; + dst += signdx; + mask = mask0; + } + e += e1; + if (e >= 0) + { + WRITE(dst, FbDoMaskRRop (READ(dst), and, xor, bits)); + bits = 0; + dst += dstStride; + e += e3; + } + } + if (bits) + WRITE(dst, FbDoMaskRRop (READ(dst), and, xor, bits)); + } + else + { + while (len--) + { + WRITE(dst, FbDoMaskRRop (READ(dst), and, xor, mask)); + dst += dstStride; + e += e1; + if (e >= 0) + { + e += e3; + mask = fbBresShiftMask(mask,signdx,dstBpp); + if (!mask) + { + dst += signdx; + mask = mask0; + } + } + } + } + + fbFinishAccess (pDrawable); +} + +void +fbBresDash (DrawablePtr pDrawable, + GCPtr pGC, + int dashOffset, + int signdx, + int signdy, + int axis, + int x1, + int y1, + int e, + int e1, + int e3, + int len) +{ + FbStip *dst; + FbStride dstStride; + int dstBpp; + int dstXoff, dstYoff; + FbGCPrivPtr pPriv = fbGetGCPrivate (pGC); + FbStip and = (FbStip) pPriv->and; + FbStip xor = (FbStip) pPriv->xor; + FbStip bgand = (FbStip) pPriv->bgand; + FbStip bgxor = (FbStip) pPriv->bgxor; + FbStip mask, mask0; + FbDashDeclare; + int dashlen; + Bool even; + Bool doOdd; + + fbGetStipDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff); + doOdd = pGC->lineStyle == LineDoubleDash; + + FbDashInit (pGC, pPriv, dashOffset, dashlen, even); + + dst += ((y1 + dstYoff) * dstStride); + x1 = (x1 + dstXoff) * dstBpp; + dst += x1 >> FB_STIP_SHIFT; + x1 &= FB_STIP_MASK; + mask0 = FbStipMask(0, dstBpp); + mask = FbStipRight (mask0, x1); + if (signdx < 0) + mask0 = FbStipRight (mask0, FB_STIP_UNIT - dstBpp); + if (signdy < 0) + dstStride = -dstStride; + while (len--) + { + if (even) + WRITE(dst, FbDoMaskRRop (READ(dst), and, xor, mask)); + else if (doOdd) + WRITE(dst, FbDoMaskRRop (READ(dst), bgand, bgxor, mask)); + if (axis == X_AXIS) + { + mask = fbBresShiftMask(mask,signdx,dstBpp); + if (!mask) + { + dst += signdx; + mask = mask0; + } + e += e1; + if (e >= 0) + { + dst += dstStride; + e += e3; + } + } + else + { + dst += dstStride; + e += e1; + if (e >= 0) + { + e += e3; + mask = fbBresShiftMask(mask,signdx,dstBpp); + if (!mask) + { + dst += signdx; + mask = mask0; + } + } + } + FbDashStep (dashlen, even); + } + + fbFinishAccess (pDrawable); +} + +void +fbBresFill (DrawablePtr pDrawable, + GCPtr pGC, + int dashOffset, + int signdx, + int signdy, + int axis, + int x1, + int y1, + int e, + int e1, + int e3, + int len) +{ + while (len--) + { + fbFill (pDrawable, pGC, x1, y1, 1, 1); + if (axis == X_AXIS) + { + x1 += signdx; + e += e1; + if (e >= 0) + { + e += e3; + y1 += signdy; + } + } + else + { + y1 += signdy; + e += e1; + if (e >= 0) + { + e += e3; + x1 += signdx; + } + } + } +} + +static void +fbSetFg (DrawablePtr pDrawable, + GCPtr pGC, + Pixel fg) +{ + if (fg != pGC->fgPixel) + { + ChangeGCVal val; + val.val = fg; + ChangeGC (NullClient, pGC, GCForeground, &val); + ValidateGC (pDrawable, pGC); + } +} + +void +fbBresFillDash (DrawablePtr pDrawable, + GCPtr pGC, + int dashOffset, + int signdx, + int signdy, + int axis, + int x1, + int y1, + int e, + int e1, + int e3, + int len) +{ + FbGCPrivPtr pPriv = fbGetGCPrivate (pGC); + FbDashDeclare; + int dashlen; + Bool even; + Bool doOdd; + Bool doBg; + Pixel fg, bg; + + fg = pGC->fgPixel; + bg = pGC->bgPixel; + + /* whether to fill the odd dashes */ + doOdd = pGC->lineStyle == LineDoubleDash; + /* whether to switch fg to bg when filling odd dashes */ + doBg = doOdd && (pGC->fillStyle == FillSolid || + pGC->fillStyle == FillStippled); + + /* compute current dash position */ + FbDashInit (pGC, pPriv, dashOffset, dashlen, even); + + while (len--) + { + if (even || doOdd) + { + if (doBg) + { + if (even) + fbSetFg (pDrawable, pGC, fg); + else + fbSetFg (pDrawable, pGC, bg); + } + fbFill (pDrawable, pGC, x1, y1, 1, 1); + } + if (axis == X_AXIS) + { + x1 += signdx; + e += e1; + if (e >= 0) + { + e += e3; + y1 += signdy; + } + } + else + { + y1 += signdy; + e += e1; + if (e >= 0) + { + e += e3; + x1 += signdx; + } + } + FbDashStep (dashlen, even); + } + if (doBg) + fbSetFg (pDrawable, pGC, fg); +} + +static void +fbBresSolid24RRop (DrawablePtr pDrawable, + GCPtr pGC, + int dashOffset, + int signdx, + int signdy, + int axis, + int x1, + int y1, + int e, + int e1, + int e3, + int len) +{ + FbStip *dst; + FbStride dstStride; + int dstBpp; + int dstXoff, dstYoff; + FbGCPrivPtr pPriv = fbGetGCPrivate (pGC); + FbStip and = pPriv->and; + FbStip xor = pPriv->xor; + FbStip leftMask, rightMask; + int nl; + FbStip *d; + int x; + int rot; + FbStip andT, xorT; + + fbGetStipDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff); + dst += ((y1 + dstYoff) * dstStride); + x1 = (x1 + dstXoff) * 24; + if (signdy < 0) + dstStride = -dstStride; + signdx *= 24; + while (len--) + { + d = dst + (x1 >> FB_STIP_SHIFT); + x = x1 & FB_STIP_MASK; + rot = FbFirst24Rot (x); + andT = FbRot24Stip(and,rot); + xorT = FbRot24Stip(xor,rot); + FbMaskStip (x, 24, leftMask, nl, rightMask); + if (leftMask) + { + WRITE(d, FbDoMaskRRop (READ(d), andT, xorT, leftMask)); + d++; + andT = FbNext24Stip (andT); + xorT = FbNext24Stip (xorT); + } + if (rightMask) + WRITE(d, FbDoMaskRRop (READ(d), andT, xorT, rightMask)); + if (axis == X_AXIS) + { + x1 += signdx; + e += e1; + if (e >= 0) + { + e += e3; + dst += dstStride; + } + } + else + { + dst += dstStride; + e += e1; + if (e >= 0) + { + e += e3; + x1 += signdx; + } + } + } + + fbFinishAccess (pDrawable); +} + +static void +fbBresDash24RRop (DrawablePtr pDrawable, + GCPtr pGC, + int dashOffset, + int signdx, + int signdy, + int axis, + int x1, + int y1, + int e, + int e1, + int e3, + int len) +{ + FbStip *dst; + FbStride dstStride; + int dstBpp; + int dstXoff, dstYoff; + FbGCPrivPtr pPriv = fbGetGCPrivate (pGC); + FbStip andT, xorT; + FbStip fgand = pPriv->and; + FbStip fgxor = pPriv->xor; + FbStip bgand = pPriv->bgand; + FbStip bgxor = pPriv->bgxor; + FbStip leftMask, rightMask; + int nl; + FbStip *d; + int x; + int rot; + FbDashDeclare; + int dashlen; + Bool even; + Bool doOdd; + + fbGetStipDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff); + doOdd = pGC->lineStyle == LineDoubleDash; + + /* compute current dash position */ + FbDashInit(pGC, pPriv, dashOffset, dashlen, even); + + dst += ((y1 + dstYoff) * dstStride); + x1 = (x1 + dstXoff) * 24; + if (signdy < 0) + dstStride = -dstStride; + signdx *= 24; + while (len--) + { + if (even || doOdd) + { + if (even) + { + andT = fgand; + xorT = fgxor; + } + else + { + andT = bgand; + xorT = bgxor; + } + d = dst + (x1 >> FB_STIP_SHIFT); + x = x1 & FB_STIP_MASK; + rot = FbFirst24Rot (x); + andT = FbRot24Stip (andT, rot); + xorT = FbRot24Stip (xorT, rot); + FbMaskStip (x, 24, leftMask, nl, rightMask); + if (leftMask) + { + WRITE(d, FbDoMaskRRop (READ(d), andT, xorT, leftMask)); + d++; + andT = FbNext24Stip (andT); + xorT = FbNext24Stip (xorT); + } + if (rightMask) + WRITE(d, FbDoMaskRRop (READ(d), andT, xorT, rightMask)); + } + if (axis == X_AXIS) + { + x1 += signdx; + e += e1; + if (e >= 0) + { + e += e3; + dst += dstStride; + } + } + else + { + dst += dstStride; + e += e1; + if (e >= 0) + { + e += e3; + x1 += signdx; + } + } + FbDashStep (dashlen, even); + } + + fbFinishAccess (pDrawable); +} + +/* + * For drivers that want to bail drawing some lines, this + * function takes care of selecting the appropriate rasterizer + * based on the contents of the specified GC. + */ + +FbBres * +fbSelectBres (DrawablePtr pDrawable, + GCPtr pGC) +{ + FbGCPrivPtr pPriv = fbGetGCPrivate(pGC); + int dstBpp = pDrawable->bitsPerPixel; + FbBres * bres; + + if (pGC->lineStyle == LineSolid) + { + bres = fbBresFill; + if (pGC->fillStyle == FillSolid) + { + bres = fbBresSolid; + if (dstBpp == 24) + bres = fbBresSolid24RRop; + if (pPriv->and == 0) + { + switch (dstBpp) { + case 8: bres = fbBresSolid8; break; + case 16: bres = fbBresSolid16; break; + case 24: bres = fbBresSolid24; break; + case 32: bres = fbBresSolid32; break; + } + } + } + } + else + { + bres = fbBresFillDash; + if (pGC->fillStyle == FillSolid) + { + bres = fbBresDash; + if (dstBpp == 24) + bres = fbBresDash24RRop; + if (pPriv->and == 0 && + (pGC->lineStyle == LineOnOffDash || pPriv->bgand == 0)) + { + switch (dstBpp) { + case 8: bres = fbBresDash8; break; + case 16: bres = fbBresDash16; break; + case 24: bres = fbBresDash24; break; + case 32: bres = fbBresDash32; break; + } + } + } + } + return bres; +} + +void +fbBres (DrawablePtr pDrawable, + GCPtr pGC, + int dashOffset, + int signdx, + int signdy, + int axis, + int x1, + int y1, + int e, + int e1, + int e3, + int len) +{ + (*fbSelectBres (pDrawable, pGC)) (pDrawable, pGC, dashOffset, + signdx, signdy, axis, x1, y1, + e, e1, e3, len); +} + +void +fbSegment (DrawablePtr pDrawable, + GCPtr pGC, + int x1, + int y1, + int x2, + int y2, + Bool drawLast, + int *dashOffset) +{ + FbBres * bres; + RegionPtr pClip = fbGetCompositeClip(pGC); + BoxPtr pBox; + int nBox; + int adx; /* abs values of dx and dy */ + int ady; + int signdx; /* sign of dx and dy */ + int signdy; + int e, e1, e2, e3; /* bresenham error and increments */ + int len; /* length of segment */ + int axis; /* major axis */ + int octant; + int dashoff; + int doff; + unsigned int bias = miGetZeroLineBias(pDrawable->pScreen); + unsigned int oc1; /* outcode of point 1 */ + unsigned int oc2; /* outcode of point 2 */ + + nBox = RegionNumRects (pClip); + pBox = RegionRects (pClip); + + bres = fbSelectBres (pDrawable, pGC); + + CalcLineDeltas(x1, y1, x2, y2, adx, ady, signdx, signdy, + 1, 1, octant); + + if (adx > ady) + { + axis = X_AXIS; + e1 = ady << 1; + e2 = e1 - (adx << 1); + e = e1 - adx; + len = adx; + } + else + { + axis = Y_AXIS; + e1 = adx << 1; + e2 = e1 - (ady << 1); + e = e1 - ady; + SetYMajorOctant(octant); + len = ady; + } + + FIXUP_ERROR (e, octant, bias); + + /* + * Adjust error terms to compare against zero + */ + e3 = e2 - e1; + e = e - e1; + + /* we have bresenham parameters and two points. + all we have to do now is clip and draw. + */ + + if (drawLast) + len++; + dashoff = *dashOffset; + *dashOffset = dashoff + len; + while(nBox--) + { + oc1 = 0; + oc2 = 0; + OUTCODES(oc1, x1, y1, pBox); + OUTCODES(oc2, x2, y2, pBox); + if ((oc1 | oc2) == 0) + { + (*bres) (pDrawable, pGC, dashoff, + signdx, signdy, axis, x1, y1, + e, e1, e3, len); + break; + } + else if (oc1 & oc2) + { + pBox++; + } + else + { + int new_x1 = x1, new_y1 = y1, new_x2 = x2, new_y2 = y2; + int clip1 = 0, clip2 = 0; + int clipdx, clipdy; + int err; + + if (miZeroClipLine(pBox->x1, pBox->y1, pBox->x2-1, + pBox->y2-1, + &new_x1, &new_y1, &new_x2, &new_y2, + adx, ady, &clip1, &clip2, + octant, bias, oc1, oc2) == -1) + { + pBox++; + continue; + } + + if (axis == X_AXIS) + len = abs(new_x2 - new_x1); + else + len = abs(new_y2 - new_y1); + if (clip2 != 0 || drawLast) + len++; + if (len) + { + /* unwind bresenham error term to first point */ + doff = dashoff; + err = e; + if (clip1) + { + clipdx = abs(new_x1 - x1); + clipdy = abs(new_y1 - y1); + if (axis == X_AXIS) + { + doff += clipdx; + err += e3 * clipdy + e1 * clipdx; + } + else + { + doff += clipdy; + err += e3 * clipdx + e1 * clipdy; + } + } + (*bres) (pDrawable, pGC, doff, + signdx, signdy, axis, new_x1, new_y1, + err, e1, e3, len); + } + pBox++; + } + } /* while (nBox--) */ +} -- cgit v1.2.3