From 0f834b91a4768673833ab4917e87d86c237bb1a6 Mon Sep 17 00:00:00 2001 From: marha Date: Fri, 23 Mar 2012 10:05:55 +0100 Subject: libX11 xserver fontconfig mesa pixman xkbcomp xkeyboard-config git update 23 Mar 2012 --- xorg-server/fb/fbseg.c | 1053 ++++++++++++++++++++++-------------------------- 1 file changed, 479 insertions(+), 574 deletions(-) (limited to 'xorg-server/fb/fbseg.c') diff --git a/xorg-server/fb/fbseg.c b/xorg-server/fb/fbseg.c index 5a458fe51..0e4e0a9f7 100644 --- a/xorg-server/fb/fbseg.c +++ b/xorg-server/fb/fbseg.c @@ -34,477 +34,398 @@ 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) +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); + 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); + mask = FbStipRight(mask0, x1); if (signdx < 0) - mask0 = FbStipRight (mask0, FB_STIP_UNIT - dstBpp); + 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)); + 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; - } - } - } + 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); + 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) +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; + 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); + int dashlen; + Bool even; + Bool doOdd; + + fbGetStipDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff); doOdd = pGC->lineStyle == LineDoubleDash; - FbDashInit (pGC, pPriv, dashOffset, dashlen, even); - + 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); + mask = FbStipRight(mask0, x1); if (signdx < 0) - mask0 = FbStipRight (mask0, FB_STIP_UNIT - dstBpp); + 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); + 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); + 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) +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; - } - } + 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) +fbSetFg(DrawablePtr pDrawable, GCPtr pGC, Pixel fg) { - if (fg != pGC->fgPixel) - { - ChangeGCVal val; - val.val = fg; - ChangeGC (NullClient, pGC, GCForeground, &val); - ValidateGC (pDrawable, pGC); + 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) +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); + FbGCPrivPtr pPriv = fbGetGCPrivate(pGC); + FbDashDeclare; - int dashlen; - Bool even; - Bool doOdd; - Bool doBg; - Pixel fg, bg; - + 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); - + 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); + 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); + 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) +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); + 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; + 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; - } - } + 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); + 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) +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; + 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); + 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; + 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); + 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); + fbFinishAccess(pDrawable); } /* @@ -514,209 +435,193 @@ fbBresDash24RRop (DrawablePtr pDrawable, */ FbBres * -fbSelectBres (DrawablePtr pDrawable, - GCPtr pGC) +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; - } - } - } + 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; - } - } - } + 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) +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); + (*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) +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; + 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; + 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; + else { + axis = Y_AXIS; + e1 = adx << 1; + e2 = e1 - (ady << 1); + e = e1 - ady; + SetYMajorOctant(octant); + len = ady; } - FIXUP_ERROR (e, octant, bias); - + 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++; + 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--) */ + 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