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Diffstat (limited to 'xorg-server/fb/fbbits.h')
-rw-r--r--xorg-server/fb/fbbits.h1846
1 files changed, 875 insertions, 971 deletions
diff --git a/xorg-server/fb/fbbits.h b/xorg-server/fb/fbbits.h
index 80a61ddeb..be32d8cf0 100644
--- a/xorg-server/fb/fbbits.h
+++ b/xorg-server/fb/fbbits.h
@@ -1,971 +1,875 @@
-/*
- * 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.
- */
-
-/*
- * This file defines functions for drawing some primitives using
- * underlying datatypes instead of masks
- */
-
-#define isClipped(c,ul,lr) (((c) | ((c) - (ul)) | ((lr) - (c))) & 0x80008000)
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#ifdef BITSMUL
-#define MUL BITSMUL
-#else
-#define MUL 1
-#endif
-
-#ifdef BITSSTORE
-#define STORE(b,x) BITSSTORE(b,x)
-#else
-#define STORE(b,x) WRITE((b), (x))
-#endif
-
-#ifdef BITSRROP
-#define RROP(b,a,x) BITSRROP(b,a,x)
-#else
-#define RROP(b,a,x) WRITE((b), FbDoRRop (READ(b), (a), (x)))
-#endif
-
-#ifdef BITSUNIT
-#define UNIT BITSUNIT
-#define USE_SOLID
-#else
-#define UNIT BITS
-#endif
-
-/*
- * Define the following before including this file:
- *
- * BRESSOLID name of function for drawing a solid segment
- * BRESDASH name of function for drawing a dashed segment
- * DOTS name of function for drawing dots
- * ARC name of function for drawing a solid arc
- * BITS type of underlying unit
- */
-
-#ifdef BRESSOLID
-void
-BRESSOLID (DrawablePtr pDrawable,
- GCPtr pGC,
- int dashOffset,
- int signdx,
- int signdy,
- int axis,
- int x1,
- int y1,
- int e,
- int e1,
- int e3,
- int len)
-{
- FbBits *dst;
- FbStride dstStride;
- int dstBpp;
- int dstXoff, dstYoff;
- FbGCPrivPtr pPriv = fbGetGCPrivate (pGC);
- UNIT *bits;
- FbStride bitsStride;
- FbStride majorStep, minorStep;
- BITS xor = (BITS) pPriv->xor;
-
- fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
- bits = ((UNIT *) (dst + ((y1 + dstYoff) * dstStride))) + (x1 + dstXoff) * MUL;
- bitsStride = dstStride * (sizeof (FbBits) / sizeof (UNIT));
- if (signdy < 0)
- bitsStride = -bitsStride;
- if (axis == X_AXIS)
- {
- majorStep = signdx * MUL;
- minorStep = bitsStride;
- }
- else
- {
- majorStep = bitsStride;
- minorStep = signdx * MUL;
- }
- while (len--)
- {
- STORE(bits,xor);
- bits += majorStep;
- e += e1;
- if (e >= 0)
- {
- bits += minorStep;
- e += e3;
- }
- }
-
- fbFinishAccess (pDrawable);
-}
-#endif
-
-#ifdef BRESDASH
-void
-BRESDASH (DrawablePtr pDrawable,
- GCPtr pGC,
- int dashOffset,
- int signdx,
- int signdy,
- int axis,
- int x1,
- int y1,
- int e,
- int e1,
- int e3,
- int len)
-{
- FbBits *dst;
- FbStride dstStride;
- int dstBpp;
- int dstXoff, dstYoff;
- FbGCPrivPtr pPriv = fbGetGCPrivate (pGC);
- UNIT *bits;
- FbStride bitsStride;
- FbStride majorStep, minorStep;
- BITS xorfg, xorbg;
- FbDashDeclare;
- int dashlen;
- Bool even;
- Bool doOdd;
-
- fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
- doOdd = pGC->lineStyle == LineDoubleDash;
- xorfg = (BITS) pPriv->xor;
- xorbg = (BITS) pPriv->bgxor;
-
- FbDashInit (pGC, pPriv, dashOffset, dashlen, even);
-
- bits = ((UNIT *) (dst + ((y1 + dstYoff) * dstStride))) + (x1 + dstXoff) * MUL;
- bitsStride = dstStride * (sizeof (FbBits) / sizeof (UNIT));
- if (signdy < 0)
- bitsStride = -bitsStride;
- if (axis == X_AXIS)
- {
- majorStep = signdx * MUL;
- minorStep = bitsStride;
- }
- else
- {
- majorStep = bitsStride;
- minorStep = signdx * MUL;
- }
- if (dashlen >= len)
- dashlen = len;
- if (doOdd)
- {
- if (!even)
- goto doubleOdd;
- for (;;)
- {
- len -= dashlen;
- while (dashlen--)
- {
- STORE(bits,xorfg);
- bits += majorStep;
- if ((e += e1) >= 0)
- {
- e += e3;
- bits += minorStep;
- }
- }
- if (!len)
- break;
-
- FbDashNextEven(dashlen);
-
- if (dashlen >= len)
- dashlen = len;
-doubleOdd:
- len -= dashlen;
- while (dashlen--)
- {
- STORE(bits,xorbg);
- bits += majorStep;
- if ((e += e1) >= 0)
- {
- e += e3;
- bits += minorStep;
- }
- }
- if (!len)
- break;
-
- FbDashNextOdd(dashlen);
-
- if (dashlen >= len)
- dashlen = len;
- }
- }
- else
- {
- if (!even)
- goto onOffOdd;
- for (;;)
- {
- len -= dashlen;
- while (dashlen--)
- {
- STORE(bits,xorfg);
- bits += majorStep;
- if ((e += e1) >= 0)
- {
- e += e3;
- bits += minorStep;
- }
- }
- if (!len)
- break;
-
- FbDashNextEven (dashlen);
-
- if (dashlen >= len)
- dashlen = len;
-onOffOdd:
- len -= dashlen;
- while (dashlen--)
- {
- bits += majorStep;
- if ((e += e1) >= 0)
- {
- e += e3;
- bits += minorStep;
- }
- }
- if (!len)
- break;
-
- FbDashNextOdd (dashlen);
-
- if (dashlen >= len)
- dashlen = len;
- }
- }
-
- fbFinishAccess (pDrawable);
-}
-#endif
-
-#ifdef DOTS
-void
-DOTS (FbBits *dst,
- FbStride dstStride,
- int dstBpp,
- BoxPtr pBox,
- xPoint *ptsOrig,
- int npt,
- int xorg,
- int yorg,
- int xoff,
- int yoff,
- FbBits and,
- FbBits xor)
-{
- INT32 *pts = (INT32 *) ptsOrig;
- UNIT *bits = (UNIT *) dst;
- UNIT *point;
- BITS bxor = (BITS) xor;
- BITS band = (BITS) and;
- FbStride bitsStride = dstStride * (sizeof (FbBits) / sizeof (UNIT));
- INT32 ul, lr;
- INT32 pt;
-
- ul = coordToInt(pBox->x1 - xorg, pBox->y1 - yorg);
- lr = coordToInt(pBox->x2 - xorg - 1, pBox->y2 - yorg - 1);
-
- bits += bitsStride * (yorg + yoff) + (xorg + xoff) * MUL;
-
- if (and == 0)
- {
- while (npt--)
- {
- pt = *pts++;
- if (!isClipped(pt,ul,lr))
- {
- point = bits + intToY(pt) * bitsStride + intToX(pt) * MUL;
- STORE(point,bxor);
- }
- }
- }
- else
- {
- while (npt--)
- {
- pt = *pts++;
- if (!isClipped(pt,ul,lr))
- {
- point = bits + intToY(pt) * bitsStride + intToX(pt) * MUL;
- RROP(point,band,bxor);
- }
- }
- }
-}
-#endif
-
-#ifdef ARC
-
-#define ARCCOPY(d) STORE(d,xorBits)
-#define ARCRROP(d) RROP(d,andBits,xorBits)
-
-void
-ARC (FbBits *dst,
- FbStride dstStride,
- int dstBpp,
- xArc *arc,
- int drawX,
- int drawY,
- FbBits and,
- FbBits xor)
-{
- UNIT *bits;
- FbStride bitsStride;
- miZeroArcRec info;
- Bool do360;
- int x;
- UNIT *yorgp, *yorgop;
- BITS andBits, xorBits;
- int yoffset, dyoffset;
- int y, a, b, d, mask;
- int k1, k3, dx, dy;
-
- bits = (UNIT *) dst;
- bitsStride = dstStride * (sizeof (FbBits) / sizeof (UNIT));
- andBits = (BITS) and;
- xorBits = (BITS) xor;
- do360 = miZeroArcSetup(arc, &info, TRUE);
- yorgp = bits + ((info.yorg + drawY) * bitsStride);
- yorgop = bits + ((info.yorgo + drawY) * bitsStride);
- info.xorg = (info.xorg + drawX) * MUL;
- info.xorgo = (info.xorgo + drawX) * MUL;
- MIARCSETUP();
- yoffset = y ? bitsStride : 0;
- dyoffset = 0;
- mask = info.initialMask;
-
- if (!(arc->width & 1))
- {
- if (andBits == 0)
- {
- if (mask & 2)
- ARCCOPY(yorgp + info.xorgo);
- if (mask & 8)
- ARCCOPY(yorgop + info.xorgo);
- }
- else
- {
- if (mask & 2)
- ARCRROP(yorgp + info.xorgo);
- if (mask & 8)
- ARCRROP(yorgop + info.xorgo);
- }
- }
- 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 = bitsStride;
- UNIT *yorghb = yorgp + (info.h * bitsStride) + info.xorg;
- UNIT *yorgohb = yorghb - info.h * MUL;
-
- yorgp += info.xorg;
- yorgop += info.xorg;
- yorghb += info.h * MUL;
- while (1)
- {
- if (andBits == 0)
- {
- ARCCOPY(yorgp + yoffset + x * MUL);
- ARCCOPY(yorgp + yoffset - x * MUL);
- ARCCOPY(yorgop - yoffset - x * MUL);
- ARCCOPY(yorgop - yoffset + x * MUL);
- }
- else
- {
- ARCRROP(yorgp + yoffset + x * MUL);
- ARCRROP(yorgp + yoffset - x * MUL);
- ARCRROP(yorgop - yoffset - x * MUL);
- ARCRROP(yorgop - yoffset + x * MUL);
- }
- if (a < 0)
- break;
- if (andBits == 0)
- {
- ARCCOPY(yorghb - xoffset - y * MUL);
- ARCCOPY(yorgohb - xoffset + y * MUL);
- ARCCOPY(yorgohb + xoffset + y * MUL);
- ARCCOPY(yorghb + xoffset - y * MUL);
- }
- else
- {
- ARCRROP(yorghb - xoffset - y * MUL);
- ARCRROP(yorgohb - xoffset + y * MUL);
- ARCRROP(yorgohb + xoffset + y * MUL);
- ARCRROP(yorghb + xoffset - y * MUL);
- }
- xoffset += bitsStride;
- MIARCCIRCLESTEP(yoffset += bitsStride;);
- }
- yorgp -= info.xorg;
- yorgop -= info.xorg;
- x = info.w;
- yoffset = info.h * bitsStride;
- }
- else if (do360)
- {
- while (y < info.h || x < info.w)
- {
- MIARCOCTANTSHIFT(dyoffset = bitsStride;);
- if (andBits == 0)
- {
- ARCCOPY(yorgp + yoffset + info.xorg + x * MUL);
- ARCCOPY(yorgp + yoffset + info.xorgo - x * MUL);
- ARCCOPY(yorgop - yoffset + info.xorgo - x * MUL);
- ARCCOPY(yorgop - yoffset + info.xorg + x * MUL);
- }
- else
- {
- ARCRROP(yorgp + yoffset + info.xorg + x * MUL);
- ARCRROP(yorgp + yoffset + info.xorgo - x * MUL);
- ARCRROP(yorgop - yoffset + info.xorgo - x * MUL);
- ARCRROP(yorgop - yoffset + info.xorg + x * MUL);
- }
- MIARCSTEP(yoffset += dyoffset;, yoffset += bitsStride;);
- }
- }
- else
- {
- while (y < info.h || x < info.w)
- {
- MIARCOCTANTSHIFT(dyoffset = bitsStride;);
- if ((x == info.start.x) || (y == info.start.y))
- {
- mask = info.start.mask;
- info.start = info.altstart;
- }
- if (andBits == 0)
- {
- if (mask & 1)
- ARCCOPY(yorgp + yoffset + info.xorg + x * MUL);
- if (mask & 2)
- ARCCOPY(yorgp + yoffset + info.xorgo - x * MUL);
- if (mask & 4)
- ARCCOPY(yorgop - yoffset + info.xorgo - x * MUL);
- if (mask & 8)
- ARCCOPY(yorgop - yoffset + info.xorg + x * MUL);
- }
- else
- {
- if (mask & 1)
- ARCRROP(yorgp + yoffset + info.xorg + x * MUL);
- if (mask & 2)
- ARCRROP(yorgp + yoffset + info.xorgo - x * MUL);
- if (mask & 4)
- ARCRROP(yorgop - yoffset + info.xorgo - x * MUL);
- if (mask & 8)
- ARCRROP(yorgop - yoffset + info.xorg + x * MUL);
- }
- if ((x == info.end.x) || (y == info.end.y))
- {
- mask = info.end.mask;
- info.end = info.altend;
- }
- MIARCSTEP(yoffset += dyoffset;, yoffset += bitsStride;);
- }
- }
- if ((x == info.start.x) || (y == info.start.y))
- mask = info.start.mask;
- if (andBits == 0)
- {
- if (mask & 1)
- ARCCOPY(yorgp + yoffset + info.xorg + x * MUL);
- if (mask & 4)
- ARCCOPY(yorgop - yoffset + info.xorgo - x * MUL);
- if (arc->height & 1)
- {
- if (mask & 2)
- ARCCOPY(yorgp + yoffset + info.xorgo - x * MUL);
- if (mask & 8)
- ARCCOPY(yorgop - yoffset + info.xorg + x * MUL);
- }
- }
- else
- {
- if (mask & 1)
- ARCRROP(yorgp + yoffset + info.xorg + x * MUL);
- if (mask & 4)
- ARCRROP(yorgop - yoffset + info.xorgo - x * MUL);
- if (arc->height & 1)
- {
- if (mask & 2)
- ARCRROP(yorgp + yoffset + info.xorgo - x * MUL);
- if (mask & 8)
- ARCRROP(yorgop - yoffset + info.xorg + x * MUL);
- }
- }
-}
-#undef ARCCOPY
-#undef ARCRROP
-#endif
-
-#ifdef GLYPH
-#if BITMAP_BIT_ORDER == LSBFirst
-# define WRITE_ADDR1(n) (n)
-# define WRITE_ADDR2(n) (n)
-# define WRITE_ADDR4(n) (n)
-#else
-# define WRITE_ADDR1(n) ((n) ^ 3)
-# define WRITE_ADDR2(n) ((n) ^ 2)
-# define WRITE_ADDR4(n) ((n))
-#endif
-
-#define WRITE1(d,n,fg) WRITE(d + WRITE_ADDR1(n), (BITS) (fg))
-
-#ifdef BITS2
-# define WRITE2(d,n,fg) WRITE((BITS2 *) &((d)[WRITE_ADDR2(n)]), (BITS2) (fg))
-#else
-# define WRITE2(d,n,fg) (WRITE1(d,n,fg), WRITE1(d,(n)+1,fg))
-#endif
-
-#ifdef BITS4
-# define WRITE4(d,n,fg) WRITE((BITS4 *) &((d)[WRITE_ADDR4(n)]), (BITS4) (fg))
-#else
-# define WRITE4(d,n,fg) (WRITE2(d,n,fg), WRITE2(d,(n)+2,fg))
-#endif
-
-void
-GLYPH (FbBits *dstBits,
- FbStride dstStride,
- int dstBpp,
- FbStip *stipple,
- FbBits fg,
- int x,
- int height)
-{
- int lshift;
- FbStip bits;
- BITS *dstLine;
- BITS *dst;
- int n;
- int shift;
-
- dstLine = (BITS *) dstBits;
- dstLine += x & ~3;
- dstStride *= (sizeof (FbBits) / sizeof (BITS));
- shift = x & 3;
- lshift = 4 - shift;
- while (height--)
- {
- bits = *stipple++;
- dst = (BITS *) dstLine;
- n = lshift;
- while (bits)
- {
- switch (FbStipMoveLsb (FbLeftStipBits (bits, n), 4, n)) {
- case 0:
- break;
- case 1:
- WRITE1(dst,0,fg);
- break;
- case 2:
- WRITE1(dst,1,fg);
- break;
- case 3:
- WRITE2(dst,0,fg);
- break;
- case 4:
- WRITE1(dst,2,fg);
- break;
- case 5:
- WRITE1(dst,0,fg);
- WRITE1(dst,2,fg);
- break;
- case 6:
- WRITE1(dst,1,fg);
- WRITE1(dst,2,fg);
- break;
- case 7:
- WRITE2(dst,0,fg);
- WRITE1(dst,2,fg);
- break;
- case 8:
- WRITE1(dst,3,fg);
- break;
- case 9:
- WRITE1(dst,0,fg);
- WRITE1(dst,3,fg);
- break;
- case 10:
- WRITE1(dst,1,fg);
- WRITE1(dst,3,fg);
- break;
- case 11:
- WRITE2(dst,0,fg);
- WRITE1(dst,3,fg);
- break;
- case 12:
- WRITE2(dst,2,fg);
- break;
- case 13:
- WRITE1(dst,0,fg);
- WRITE2(dst,2,fg);
- break;
- case 14:
- WRITE1(dst,1,fg);
- WRITE2(dst,2,fg);
- break;
- case 15:
- WRITE4(dst,0,fg);
- break;
- }
- bits = FbStipLeft (bits, n);
- n = 4;
- dst += 4;
- }
- dstLine += dstStride;
- }
-}
-#undef WRITE_ADDR1
-#undef WRITE_ADDR2
-#undef WRITE_ADDR4
-#undef WRITE1
-#undef WRITE2
-#undef WRITE4
-
-#endif
-
-#ifdef POLYLINE
-void
-POLYLINE (DrawablePtr pDrawable,
- GCPtr pGC,
- int mode,
- int npt,
- DDXPointPtr ptsOrig)
-{
- INT32 *pts = (INT32 *) ptsOrig;
- int xoff = pDrawable->x;
- int yoff = pDrawable->y;
- unsigned int bias = miGetZeroLineBias(pDrawable->pScreen);
- BoxPtr pBox = RegionExtents(fbGetCompositeClip (pGC));
-
- FbBits *dst;
- int dstStride;
- int dstBpp;
- int dstXoff, dstYoff;
-
- UNIT *bits, *bitsBase;
- FbStride bitsStride;
- BITS xor = fbGetGCPrivate(pGC)->xor;
- BITS and = fbGetGCPrivate(pGC)->and;
- int dashoffset = 0;
-
- INT32 ul, lr;
- INT32 pt1, pt2;
-
- int e, e1, e3, len;
- int stepmajor, stepminor;
- int octant;
-
- if (mode == CoordModePrevious)
- fbFixCoordModePrevious (npt, ptsOrig);
-
- fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
- bitsStride = dstStride * (sizeof (FbBits) / sizeof (UNIT));
- bitsBase = ((UNIT *) dst) + (yoff + dstYoff) * bitsStride + (xoff + dstXoff) * MUL;
- ul = coordToInt(pBox->x1 - xoff, pBox->y1 - yoff);
- lr = coordToInt(pBox->x2 - xoff - 1, pBox->y2 - yoff - 1);
-
- pt1 = *pts++;
- npt--;
- pt2 = *pts++;
- npt--;
- for (;;)
- {
- if (isClipped (pt1, ul, lr) | isClipped (pt2, ul, lr))
- {
- fbSegment (pDrawable, pGC,
- intToX(pt1) + xoff, intToY(pt1) + yoff,
- intToX(pt2) + xoff, intToY(pt2) + yoff,
- npt == 0 && pGC->capStyle != CapNotLast,
- &dashoffset);
- if (!npt) {
- fbFinishAccess (pDrawable);
- return;
- }
- pt1 = pt2;
- pt2 = *pts++;
- npt--;
- }
- else
- {
- bits = bitsBase + intToY(pt1) * bitsStride + intToX(pt1) * MUL;
- for (;;)
- {
- CalcLineDeltas (intToX(pt1), intToY(pt1),
- intToX(pt2), intToY(pt2),
- len, e1, stepmajor, stepminor, 1, bitsStride,
- octant);
- stepmajor *= MUL;
- if (len < e1)
- {
- e3 = len;
- len = e1;
- e1 = e3;
-
- e3 = stepminor;
- stepminor = stepmajor;
- stepmajor = e3;
- SetYMajorOctant(octant);
- }
- e = -len;
- e1 <<= 1;
- e3 = e << 1;
- FIXUP_ERROR (e, octant, bias);
- if (and == 0)
- {
- while (len--)
- {
- STORE(bits,xor);
- bits += stepmajor;
- e += e1;
- if (e >= 0)
- {
- bits += stepminor;
- e += e3;
- }
- }
- }
- else
- {
- while (len--)
- {
- RROP(bits,and,xor);
- bits += stepmajor;
- e += e1;
- if (e >= 0)
- {
- bits += stepminor;
- e += e3;
- }
- }
- }
- if (!npt)
- {
- if (pGC->capStyle != CapNotLast &&
- pt2 != *((INT32 *) ptsOrig))
- {
- RROP(bits,and,xor);
- }
- fbFinishAccess (pDrawable);
- return;
- }
- pt1 = pt2;
- pt2 = *pts++;
- --npt;
- if (isClipped (pt2, ul, lr))
- break;
- }
- }
- }
-
- fbFinishAccess (pDrawable);
-}
-#endif
-
-#ifdef POLYSEGMENT
-void
-POLYSEGMENT (DrawablePtr pDrawable,
- GCPtr pGC,
- int nseg,
- xSegment *pseg)
-{
- INT32 *pts = (INT32 *) pseg;
- int xoff = pDrawable->x;
- int yoff = pDrawable->y;
- unsigned int bias = miGetZeroLineBias(pDrawable->pScreen);
- BoxPtr pBox = RegionExtents(fbGetCompositeClip (pGC));
-
- FbBits *dst;
- int dstStride;
- int dstBpp;
- int dstXoff, dstYoff;
-
- UNIT *bits, *bitsBase;
- FbStride bitsStride;
- FbBits xorBits = fbGetGCPrivate(pGC)->xor;
- FbBits andBits = fbGetGCPrivate(pGC)->and;
- BITS xor = xorBits;
- BITS and = andBits;
- int dashoffset = 0;
-
- INT32 ul, lr;
- INT32 pt1, pt2;
-
- int e, e1, e3, len;
- int stepmajor, stepminor;
- int octant;
- Bool capNotLast;
-
- fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
- bitsStride = dstStride * (sizeof (FbBits) / sizeof (UNIT));
- bitsBase = ((UNIT *) dst) + (yoff + dstYoff) * bitsStride + (xoff + dstXoff) * MUL;
- ul = coordToInt(pBox->x1 - xoff, pBox->y1 - yoff);
- lr = coordToInt(pBox->x2 - xoff - 1, pBox->y2 - yoff - 1);
-
- capNotLast = pGC->capStyle == CapNotLast;
-
- while (nseg--)
- {
- pt1 = *pts++;
- pt2 = *pts++;
- if (isClipped (pt1, ul, lr) | isClipped (pt2, ul, lr))
- {
- fbSegment (pDrawable, pGC,
- intToX(pt1) + xoff, intToY(pt1) + yoff,
- intToX(pt2) + xoff, intToY(pt2) + yoff,
- !capNotLast, &dashoffset);
- }
- else
- {
- CalcLineDeltas (intToX(pt1), intToY(pt1),
- intToX(pt2), intToY(pt2),
- len, e1, stepmajor, stepminor, 1, bitsStride,
- octant);
- if (e1 == 0 && len > 3
-#if MUL != 1
- && FbCheck24Pix(and) && FbCheck24Pix(xor)
-#endif
- )
- {
- int x1, x2;
- FbBits *dstLine;
- int dstX, width;
- FbBits startmask, endmask;
- int nmiddle;
-
- if (stepmajor < 0)
- {
- x1 = intToX(pt2);
- x2 = intToX(pt1) + 1;
- if (capNotLast)
- x1++;
- }
- else
- {
- x1 = intToX(pt1);
- x2 = intToX(pt2);
- if (!capNotLast)
- x2++;
- }
- dstX = (x1 + xoff + dstXoff) * (sizeof (UNIT) * 8 * MUL);
- width = (x2 - x1) * (sizeof (UNIT) * 8 * MUL);
-
- dstLine = dst + (intToY(pt1) + yoff + dstYoff) * dstStride;
- dstLine += dstX >> FB_SHIFT;
- dstX &= FB_MASK;
- FbMaskBits (dstX, width, startmask, nmiddle, endmask);
- if (startmask)
- {
- WRITE(dstLine, FbDoMaskRRop (READ(dstLine), andBits, xorBits, startmask));
- dstLine++;
- }
- if (!andBits)
- while (nmiddle--)
- WRITE(dstLine++, xorBits);
- else
- while (nmiddle--)
- {
- WRITE(dstLine, FbDoRRop (READ(dstLine), andBits, xorBits));
- dstLine++;
- }
- if (endmask)
- WRITE(dstLine, FbDoMaskRRop (READ(dstLine), andBits, xorBits, endmask));
- }
- else
- {
- stepmajor *= MUL;
- bits = bitsBase + intToY(pt1) * bitsStride + intToX(pt1) * MUL;
- if (len < e1)
- {
- e3 = len;
- len = e1;
- e1 = e3;
-
- e3 = stepminor;
- stepminor = stepmajor;
- stepmajor = e3;
- SetYMajorOctant(octant);
- }
- e = -len;
- e1 <<= 1;
- e3 = e << 1;
- FIXUP_ERROR (e, octant, bias);
- if (!capNotLast)
- len++;
- if (and == 0)
- {
- while (len--)
- {
- STORE(bits,xor);
- bits += stepmajor;
- e += e1;
- if (e >= 0)
- {
- bits += stepminor;
- e += e3;
- }
- }
- }
- else
- {
- while (len--)
- {
- RROP(bits,and,xor);
- bits += stepmajor;
- e += e1;
- if (e >= 0)
- {
- bits += stepminor;
- e += e3;
- }
- }
- }
- }
- }
- }
-
- fbFinishAccess (pDrawable);
-}
-#endif
-
-#undef MUL
-#undef STORE
-#undef RROP
-#undef UNIT
-#undef USE_SOLID
-
-#undef isClipped
+/*
+ * 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.
+ */
+
+/*
+ * This file defines functions for drawing some primitives using
+ * underlying datatypes instead of masks
+ */
+
+#define isClipped(c,ul,lr) (((c) | ((c) - (ul)) | ((lr) - (c))) & 0x80008000)
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#ifdef BITSMUL
+#define MUL BITSMUL
+#else
+#define MUL 1
+#endif
+
+#ifdef BITSSTORE
+#define STORE(b,x) BITSSTORE(b,x)
+#else
+#define STORE(b,x) WRITE((b), (x))
+#endif
+
+#ifdef BITSRROP
+#define RROP(b,a,x) BITSRROP(b,a,x)
+#else
+#define RROP(b,a,x) WRITE((b), FbDoRRop (READ(b), (a), (x)))
+#endif
+
+#ifdef BITSUNIT
+#define UNIT BITSUNIT
+#define USE_SOLID
+#else
+#define UNIT BITS
+#endif
+
+/*
+ * Define the following before including this file:
+ *
+ * BRESSOLID name of function for drawing a solid segment
+ * BRESDASH name of function for drawing a dashed segment
+ * DOTS name of function for drawing dots
+ * ARC name of function for drawing a solid arc
+ * BITS type of underlying unit
+ */
+
+#ifdef BRESSOLID
+void
+BRESSOLID(DrawablePtr pDrawable,
+ GCPtr pGC,
+ int dashOffset,
+ int signdx,
+ int signdy, int axis, int x1, int y1, int e, int e1, int e3, int len)
+{
+ FbBits *dst;
+ FbStride dstStride;
+ int dstBpp;
+ int dstXoff, dstYoff;
+ FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
+ UNIT *bits;
+ FbStride bitsStride;
+ FbStride majorStep, minorStep;
+ BITS xor = (BITS) pPriv->xor;
+
+ fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
+ bits =
+ ((UNIT *) (dst + ((y1 + dstYoff) * dstStride))) + (x1 + dstXoff) * MUL;
+ bitsStride = dstStride * (sizeof(FbBits) / sizeof(UNIT));
+ if (signdy < 0)
+ bitsStride = -bitsStride;
+ if (axis == X_AXIS) {
+ majorStep = signdx * MUL;
+ minorStep = bitsStride;
+ }
+ else {
+ majorStep = bitsStride;
+ minorStep = signdx * MUL;
+ }
+ while (len--) {
+ STORE(bits, xor);
+ bits += majorStep;
+ e += e1;
+ if (e >= 0) {
+ bits += minorStep;
+ e += e3;
+ }
+ }
+
+ fbFinishAccess(pDrawable);
+}
+#endif
+
+#ifdef BRESDASH
+void
+BRESDASH(DrawablePtr pDrawable,
+ GCPtr pGC,
+ int dashOffset,
+ int signdx,
+ int signdy, int axis, int x1, int y1, int e, int e1, int e3, int len)
+{
+ FbBits *dst;
+ FbStride dstStride;
+ int dstBpp;
+ int dstXoff, dstYoff;
+ FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
+ UNIT *bits;
+ FbStride bitsStride;
+ FbStride majorStep, minorStep;
+ BITS xorfg, xorbg;
+
+ FbDashDeclare;
+ int dashlen;
+ Bool even;
+ Bool doOdd;
+
+ fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
+ doOdd = pGC->lineStyle == LineDoubleDash;
+ xorfg = (BITS) pPriv->xor;
+ xorbg = (BITS) pPriv->bgxor;
+
+ FbDashInit(pGC, pPriv, dashOffset, dashlen, even);
+
+ bits =
+ ((UNIT *) (dst + ((y1 + dstYoff) * dstStride))) + (x1 + dstXoff) * MUL;
+ bitsStride = dstStride * (sizeof(FbBits) / sizeof(UNIT));
+ if (signdy < 0)
+ bitsStride = -bitsStride;
+ if (axis == X_AXIS) {
+ majorStep = signdx * MUL;
+ minorStep = bitsStride;
+ }
+ else {
+ majorStep = bitsStride;
+ minorStep = signdx * MUL;
+ }
+ if (dashlen >= len)
+ dashlen = len;
+ if (doOdd) {
+ if (!even)
+ goto doubleOdd;
+ for (;;) {
+ len -= dashlen;
+ while (dashlen--) {
+ STORE(bits, xorfg);
+ bits += majorStep;
+ if ((e += e1) >= 0) {
+ e += e3;
+ bits += minorStep;
+ }
+ }
+ if (!len)
+ break;
+
+ FbDashNextEven(dashlen);
+
+ if (dashlen >= len)
+ dashlen = len;
+ doubleOdd:
+ len -= dashlen;
+ while (dashlen--) {
+ STORE(bits, xorbg);
+ bits += majorStep;
+ if ((e += e1) >= 0) {
+ e += e3;
+ bits += minorStep;
+ }
+ }
+ if (!len)
+ break;
+
+ FbDashNextOdd(dashlen);
+
+ if (dashlen >= len)
+ dashlen = len;
+ }
+ }
+ else {
+ if (!even)
+ goto onOffOdd;
+ for (;;) {
+ len -= dashlen;
+ while (dashlen--) {
+ STORE(bits, xorfg);
+ bits += majorStep;
+ if ((e += e1) >= 0) {
+ e += e3;
+ bits += minorStep;
+ }
+ }
+ if (!len)
+ break;
+
+ FbDashNextEven(dashlen);
+
+ if (dashlen >= len)
+ dashlen = len;
+ onOffOdd:
+ len -= dashlen;
+ while (dashlen--) {
+ bits += majorStep;
+ if ((e += e1) >= 0) {
+ e += e3;
+ bits += minorStep;
+ }
+ }
+ if (!len)
+ break;
+
+ FbDashNextOdd(dashlen);
+
+ if (dashlen >= len)
+ dashlen = len;
+ }
+ }
+
+ fbFinishAccess(pDrawable);
+}
+#endif
+
+#ifdef DOTS
+void
+DOTS(FbBits * dst,
+ FbStride dstStride,
+ int dstBpp,
+ BoxPtr pBox,
+ xPoint * ptsOrig,
+ int npt, int xorg, int yorg, int xoff, int yoff, FbBits and, FbBits xor)
+{
+ INT32 *pts = (INT32 *) ptsOrig;
+ UNIT *bits = (UNIT *) dst;
+ UNIT *point;
+ BITS bxor = (BITS) xor;
+ BITS band = (BITS) and;
+ FbStride bitsStride = dstStride * (sizeof(FbBits) / sizeof(UNIT));
+ INT32 ul, lr;
+ INT32 pt;
+
+ ul = coordToInt(pBox->x1 - xorg, pBox->y1 - yorg);
+ lr = coordToInt(pBox->x2 - xorg - 1, pBox->y2 - yorg - 1);
+
+ bits += bitsStride * (yorg + yoff) + (xorg + xoff) * MUL;
+
+ if (and == 0) {
+ while (npt--) {
+ pt = *pts++;
+ if (!isClipped(pt, ul, lr)) {
+ point = bits + intToY(pt) * bitsStride + intToX(pt) * MUL;
+ STORE(point, bxor);
+ }
+ }
+ }
+ else {
+ while (npt--) {
+ pt = *pts++;
+ if (!isClipped(pt, ul, lr)) {
+ point = bits + intToY(pt) * bitsStride + intToX(pt) * MUL;
+ RROP(point, band, bxor);
+ }
+ }
+ }
+}
+#endif
+
+#ifdef ARC
+
+#define ARCCOPY(d) STORE(d,xorBits)
+#define ARCRROP(d) RROP(d,andBits,xorBits)
+
+void
+ARC(FbBits * dst,
+ FbStride dstStride,
+ int dstBpp, xArc * arc, int drawX, int drawY, FbBits and, FbBits xor)
+{
+ UNIT *bits;
+ FbStride bitsStride;
+ miZeroArcRec info;
+ Bool do360;
+ int x;
+ UNIT *yorgp, *yorgop;
+ BITS andBits, xorBits;
+ int yoffset, dyoffset;
+ int y, a, b, d, mask;
+ int k1, k3, dx, dy;
+
+ bits = (UNIT *) dst;
+ bitsStride = dstStride * (sizeof(FbBits) / sizeof(UNIT));
+ andBits = (BITS) and;
+ xorBits = (BITS) xor;
+ do360 = miZeroArcSetup(arc, &info, TRUE);
+ yorgp = bits + ((info.yorg + drawY) * bitsStride);
+ yorgop = bits + ((info.yorgo + drawY) * bitsStride);
+ info.xorg = (info.xorg + drawX) * MUL;
+ info.xorgo = (info.xorgo + drawX) * MUL;
+ MIARCSETUP();
+ yoffset = y ? bitsStride : 0;
+ dyoffset = 0;
+ mask = info.initialMask;
+
+ if (!(arc->width & 1)) {
+ if (andBits == 0) {
+ if (mask & 2)
+ ARCCOPY(yorgp + info.xorgo);
+ if (mask & 8)
+ ARCCOPY(yorgop + info.xorgo);
+ }
+ else {
+ if (mask & 2)
+ ARCRROP(yorgp + info.xorgo);
+ if (mask & 8)
+ ARCRROP(yorgop + info.xorgo);
+ }
+ }
+ 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 = bitsStride;
+ UNIT *yorghb = yorgp + (info.h * bitsStride) + info.xorg;
+ UNIT *yorgohb = yorghb - info.h * MUL;
+
+ yorgp += info.xorg;
+ yorgop += info.xorg;
+ yorghb += info.h * MUL;
+ while (1) {
+ if (andBits == 0) {
+ ARCCOPY(yorgp + yoffset + x * MUL);
+ ARCCOPY(yorgp + yoffset - x * MUL);
+ ARCCOPY(yorgop - yoffset - x * MUL);
+ ARCCOPY(yorgop - yoffset + x * MUL);
+ }
+ else {
+ ARCRROP(yorgp + yoffset + x * MUL);
+ ARCRROP(yorgp + yoffset - x * MUL);
+ ARCRROP(yorgop - yoffset - x * MUL);
+ ARCRROP(yorgop - yoffset + x * MUL);
+ }
+ if (a < 0)
+ break;
+ if (andBits == 0) {
+ ARCCOPY(yorghb - xoffset - y * MUL);
+ ARCCOPY(yorgohb - xoffset + y * MUL);
+ ARCCOPY(yorgohb + xoffset + y * MUL);
+ ARCCOPY(yorghb + xoffset - y * MUL);
+ }
+ else {
+ ARCRROP(yorghb - xoffset - y * MUL);
+ ARCRROP(yorgohb - xoffset + y * MUL);
+ ARCRROP(yorgohb + xoffset + y * MUL);
+ ARCRROP(yorghb + xoffset - y * MUL);
+ }
+ xoffset += bitsStride;
+ MIARCCIRCLESTEP(yoffset += bitsStride;
+ );
+ }
+ yorgp -= info.xorg;
+ yorgop -= info.xorg;
+ x = info.w;
+ yoffset = info.h * bitsStride;
+ }
+ else if (do360) {
+ while (y < info.h || x < info.w) {
+ MIARCOCTANTSHIFT(dyoffset = bitsStride;
+ );
+ if (andBits == 0) {
+ ARCCOPY(yorgp + yoffset + info.xorg + x * MUL);
+ ARCCOPY(yorgp + yoffset + info.xorgo - x * MUL);
+ ARCCOPY(yorgop - yoffset + info.xorgo - x * MUL);
+ ARCCOPY(yorgop - yoffset + info.xorg + x * MUL);
+ }
+ else {
+ ARCRROP(yorgp + yoffset + info.xorg + x * MUL);
+ ARCRROP(yorgp + yoffset + info.xorgo - x * MUL);
+ ARCRROP(yorgop - yoffset + info.xorgo - x * MUL);
+ ARCRROP(yorgop - yoffset + info.xorg + x * MUL);
+ }
+ MIARCSTEP(yoffset += dyoffset;
+ , yoffset += bitsStride;
+ );
+ }
+ }
+ else {
+ while (y < info.h || x < info.w) {
+ MIARCOCTANTSHIFT(dyoffset = bitsStride;
+ );
+ if ((x == info.start.x) || (y == info.start.y)) {
+ mask = info.start.mask;
+ info.start = info.altstart;
+ }
+ if (andBits == 0) {
+ if (mask & 1)
+ ARCCOPY(yorgp + yoffset + info.xorg + x * MUL);
+ if (mask & 2)
+ ARCCOPY(yorgp + yoffset + info.xorgo - x * MUL);
+ if (mask & 4)
+ ARCCOPY(yorgop - yoffset + info.xorgo - x * MUL);
+ if (mask & 8)
+ ARCCOPY(yorgop - yoffset + info.xorg + x * MUL);
+ }
+ else {
+ if (mask & 1)
+ ARCRROP(yorgp + yoffset + info.xorg + x * MUL);
+ if (mask & 2)
+ ARCRROP(yorgp + yoffset + info.xorgo - x * MUL);
+ if (mask & 4)
+ ARCRROP(yorgop - yoffset + info.xorgo - x * MUL);
+ if (mask & 8)
+ ARCRROP(yorgop - yoffset + info.xorg + x * MUL);
+ }
+ if ((x == info.end.x) || (y == info.end.y)) {
+ mask = info.end.mask;
+ info.end = info.altend;
+ }
+ MIARCSTEP(yoffset += dyoffset;
+ , yoffset += bitsStride;
+ );
+ }
+ }
+ if ((x == info.start.x) || (y == info.start.y))
+ mask = info.start.mask;
+ if (andBits == 0) {
+ if (mask & 1)
+ ARCCOPY(yorgp + yoffset + info.xorg + x * MUL);
+ if (mask & 4)
+ ARCCOPY(yorgop - yoffset + info.xorgo - x * MUL);
+ if (arc->height & 1) {
+ if (mask & 2)
+ ARCCOPY(yorgp + yoffset + info.xorgo - x * MUL);
+ if (mask & 8)
+ ARCCOPY(yorgop - yoffset + info.xorg + x * MUL);
+ }
+ }
+ else {
+ if (mask & 1)
+ ARCRROP(yorgp + yoffset + info.xorg + x * MUL);
+ if (mask & 4)
+ ARCRROP(yorgop - yoffset + info.xorgo - x * MUL);
+ if (arc->height & 1) {
+ if (mask & 2)
+ ARCRROP(yorgp + yoffset + info.xorgo - x * MUL);
+ if (mask & 8)
+ ARCRROP(yorgop - yoffset + info.xorg + x * MUL);
+ }
+ }
+}
+
+#undef ARCCOPY
+#undef ARCRROP
+#endif
+
+#ifdef GLYPH
+#if BITMAP_BIT_ORDER == LSBFirst
+#define WRITE_ADDR1(n) (n)
+#define WRITE_ADDR2(n) (n)
+#define WRITE_ADDR4(n) (n)
+#else
+#define WRITE_ADDR1(n) ((n) ^ 3)
+#define WRITE_ADDR2(n) ((n) ^ 2)
+#define WRITE_ADDR4(n) ((n))
+#endif
+
+#define WRITE1(d,n,fg) WRITE(d + WRITE_ADDR1(n), (BITS) (fg))
+
+#ifdef BITS2
+#define WRITE2(d,n,fg) WRITE((BITS2 *) &((d)[WRITE_ADDR2(n)]), (BITS2) (fg))
+#else
+#define WRITE2(d,n,fg) (WRITE1(d,n,fg), WRITE1(d,(n)+1,fg))
+#endif
+
+#ifdef BITS4
+#define WRITE4(d,n,fg) WRITE((BITS4 *) &((d)[WRITE_ADDR4(n)]), (BITS4) (fg))
+#else
+#define WRITE4(d,n,fg) (WRITE2(d,n,fg), WRITE2(d,(n)+2,fg))
+#endif
+
+void
+GLYPH(FbBits * dstBits,
+ FbStride dstStride,
+ int dstBpp, FbStip * stipple, FbBits fg, int x, int height)
+{
+ int lshift;
+ FbStip bits;
+ BITS *dstLine;
+ BITS *dst;
+ int n;
+ int shift;
+
+ dstLine = (BITS *) dstBits;
+ dstLine += x & ~3;
+ dstStride *= (sizeof(FbBits) / sizeof(BITS));
+ shift = x & 3;
+ lshift = 4 - shift;
+ while (height--) {
+ bits = *stipple++;
+ dst = (BITS *) dstLine;
+ n = lshift;
+ while (bits) {
+ switch (FbStipMoveLsb(FbLeftStipBits(bits, n), 4, n)) {
+ case 0:
+ break;
+ case 1:
+ WRITE1(dst, 0, fg);
+ break;
+ case 2:
+ WRITE1(dst, 1, fg);
+ break;
+ case 3:
+ WRITE2(dst, 0, fg);
+ break;
+ case 4:
+ WRITE1(dst, 2, fg);
+ break;
+ case 5:
+ WRITE1(dst, 0, fg);
+ WRITE1(dst, 2, fg);
+ break;
+ case 6:
+ WRITE1(dst, 1, fg);
+ WRITE1(dst, 2, fg);
+ break;
+ case 7:
+ WRITE2(dst, 0, fg);
+ WRITE1(dst, 2, fg);
+ break;
+ case 8:
+ WRITE1(dst, 3, fg);
+ break;
+ case 9:
+ WRITE1(dst, 0, fg);
+ WRITE1(dst, 3, fg);
+ break;
+ case 10:
+ WRITE1(dst, 1, fg);
+ WRITE1(dst, 3, fg);
+ break;
+ case 11:
+ WRITE2(dst, 0, fg);
+ WRITE1(dst, 3, fg);
+ break;
+ case 12:
+ WRITE2(dst, 2, fg);
+ break;
+ case 13:
+ WRITE1(dst, 0, fg);
+ WRITE2(dst, 2, fg);
+ break;
+ case 14:
+ WRITE1(dst, 1, fg);
+ WRITE2(dst, 2, fg);
+ break;
+ case 15:
+ WRITE4(dst, 0, fg);
+ break;
+ }
+ bits = FbStipLeft(bits, n);
+ n = 4;
+ dst += 4;
+ }
+ dstLine += dstStride;
+ }
+}
+
+#undef WRITE_ADDR1
+#undef WRITE_ADDR2
+#undef WRITE_ADDR4
+#undef WRITE1
+#undef WRITE2
+#undef WRITE4
+
+#endif
+
+#ifdef POLYLINE
+void
+POLYLINE(DrawablePtr pDrawable,
+ GCPtr pGC, int mode, int npt, DDXPointPtr ptsOrig)
+{
+ INT32 *pts = (INT32 *) ptsOrig;
+ int xoff = pDrawable->x;
+ int yoff = pDrawable->y;
+ unsigned int bias = miGetZeroLineBias(pDrawable->pScreen);
+ BoxPtr pBox = RegionExtents(fbGetCompositeClip(pGC));
+
+ FbBits *dst;
+ int dstStride;
+ int dstBpp;
+ int dstXoff, dstYoff;
+
+ UNIT *bits, *bitsBase;
+ FbStride bitsStride;
+ BITS xor = fbGetGCPrivate(pGC)->xor;
+ BITS and = fbGetGCPrivate(pGC)->and;
+ int dashoffset = 0;
+
+ INT32 ul, lr;
+ INT32 pt1, pt2;
+
+ int e, e1, e3, len;
+ int stepmajor, stepminor;
+ int octant;
+
+ if (mode == CoordModePrevious)
+ fbFixCoordModePrevious(npt, ptsOrig);
+
+ fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
+ bitsStride = dstStride * (sizeof(FbBits) / sizeof(UNIT));
+ bitsBase =
+ ((UNIT *) dst) + (yoff + dstYoff) * bitsStride + (xoff + dstXoff) * MUL;
+ ul = coordToInt(pBox->x1 - xoff, pBox->y1 - yoff);
+ lr = coordToInt(pBox->x2 - xoff - 1, pBox->y2 - yoff - 1);
+
+ pt1 = *pts++;
+ npt--;
+ pt2 = *pts++;
+ npt--;
+ for (;;) {
+ if (isClipped(pt1, ul, lr) | isClipped(pt2, ul, lr)) {
+ fbSegment(pDrawable, pGC,
+ intToX(pt1) + xoff, intToY(pt1) + yoff,
+ intToX(pt2) + xoff, intToY(pt2) + yoff,
+ npt == 0 && pGC->capStyle != CapNotLast, &dashoffset);
+ if (!npt) {
+ fbFinishAccess(pDrawable);
+ return;
+ }
+ pt1 = pt2;
+ pt2 = *pts++;
+ npt--;
+ }
+ else {
+ bits = bitsBase + intToY(pt1) * bitsStride + intToX(pt1) * MUL;
+ for (;;) {
+ CalcLineDeltas(intToX(pt1), intToY(pt1),
+ intToX(pt2), intToY(pt2),
+ len, e1, stepmajor, stepminor, 1, bitsStride,
+ octant);
+ stepmajor *= MUL;
+ if (len < e1) {
+ e3 = len;
+ len = e1;
+ e1 = e3;
+
+ e3 = stepminor;
+ stepminor = stepmajor;
+ stepmajor = e3;
+ SetYMajorOctant(octant);
+ }
+ e = -len;
+ e1 <<= 1;
+ e3 = e << 1;
+ FIXUP_ERROR(e, octant, bias);
+ if (and == 0) {
+ while (len--) {
+ STORE(bits, xor);
+ bits += stepmajor;
+ e += e1;
+ if (e >= 0) {
+ bits += stepminor;
+ e += e3;
+ }
+ }
+ }
+ else {
+ while (len--) {
+ RROP(bits, and, xor);
+ bits += stepmajor;
+ e += e1;
+ if (e >= 0) {
+ bits += stepminor;
+ e += e3;
+ }
+ }
+ }
+ if (!npt) {
+ if (pGC->capStyle != CapNotLast &&
+ pt2 != *((INT32 *) ptsOrig)) {
+ RROP(bits, and, xor);
+ }
+ fbFinishAccess(pDrawable);
+ return;
+ }
+ pt1 = pt2;
+ pt2 = *pts++;
+ --npt;
+ if (isClipped(pt2, ul, lr))
+ break;
+ }
+ }
+ }
+
+ fbFinishAccess(pDrawable);
+}
+#endif
+
+#ifdef POLYSEGMENT
+void
+POLYSEGMENT(DrawablePtr pDrawable, GCPtr pGC, int nseg, xSegment * pseg)
+{
+ INT32 *pts = (INT32 *) pseg;
+ int xoff = pDrawable->x;
+ int yoff = pDrawable->y;
+ unsigned int bias = miGetZeroLineBias(pDrawable->pScreen);
+ BoxPtr pBox = RegionExtents(fbGetCompositeClip(pGC));
+
+ FbBits *dst;
+ int dstStride;
+ int dstBpp;
+ int dstXoff, dstYoff;
+
+ UNIT *bits, *bitsBase;
+ FbStride bitsStride;
+ FbBits xorBits = fbGetGCPrivate(pGC)->xor;
+ FbBits andBits = fbGetGCPrivate(pGC)->and;
+ BITS xor = xorBits;
+ BITS and = andBits;
+ int dashoffset = 0;
+
+ INT32 ul, lr;
+ INT32 pt1, pt2;
+
+ int e, e1, e3, len;
+ int stepmajor, stepminor;
+ int octant;
+ Bool capNotLast;
+
+ fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
+ bitsStride = dstStride * (sizeof(FbBits) / sizeof(UNIT));
+ bitsBase =
+ ((UNIT *) dst) + (yoff + dstYoff) * bitsStride + (xoff + dstXoff) * MUL;
+ ul = coordToInt(pBox->x1 - xoff, pBox->y1 - yoff);
+ lr = coordToInt(pBox->x2 - xoff - 1, pBox->y2 - yoff - 1);
+
+ capNotLast = pGC->capStyle == CapNotLast;
+
+ while (nseg--) {
+ pt1 = *pts++;
+ pt2 = *pts++;
+ if (isClipped(pt1, ul, lr) | isClipped(pt2, ul, lr)) {
+ fbSegment(pDrawable, pGC,
+ intToX(pt1) + xoff, intToY(pt1) + yoff,
+ intToX(pt2) + xoff, intToY(pt2) + yoff,
+ !capNotLast, &dashoffset);
+ }
+ else {
+ CalcLineDeltas(intToX(pt1), intToY(pt1),
+ intToX(pt2), intToY(pt2),
+ len, e1, stepmajor, stepminor, 1, bitsStride,
+ octant);
+ if (e1 == 0 && len > 3
+#if MUL != 1
+ && FbCheck24Pix(and) && FbCheck24Pix(xor)
+#endif
+ ) {
+ int x1, x2;
+ FbBits *dstLine;
+ int dstX, width;
+ FbBits startmask, endmask;
+ int nmiddle;
+
+ if (stepmajor < 0) {
+ x1 = intToX(pt2);
+ x2 = intToX(pt1) + 1;
+ if (capNotLast)
+ x1++;
+ }
+ else {
+ x1 = intToX(pt1);
+ x2 = intToX(pt2);
+ if (!capNotLast)
+ x2++;
+ }
+ dstX = (x1 + xoff + dstXoff) * (sizeof(UNIT) * 8 * MUL);
+ width = (x2 - x1) * (sizeof(UNIT) * 8 * MUL);
+
+ dstLine = dst + (intToY(pt1) + yoff + dstYoff) * dstStride;
+ dstLine += dstX >> FB_SHIFT;
+ dstX &= FB_MASK;
+ FbMaskBits(dstX, width, startmask, nmiddle, endmask);
+ if (startmask) {
+ WRITE(dstLine,
+ FbDoMaskRRop(READ(dstLine), andBits, xorBits,
+ startmask));
+ dstLine++;
+ }
+ if (!andBits)
+ while (nmiddle--)
+ WRITE(dstLine++, xorBits);
+ else
+ while (nmiddle--) {
+ WRITE(dstLine,
+ FbDoRRop(READ(dstLine), andBits, xorBits));
+ dstLine++;
+ }
+ if (endmask)
+ WRITE(dstLine,
+ FbDoMaskRRop(READ(dstLine), andBits, xorBits,
+ endmask));
+ }
+ else {
+ stepmajor *= MUL;
+ bits = bitsBase + intToY(pt1) * bitsStride + intToX(pt1) * MUL;
+ if (len < e1) {
+ e3 = len;
+ len = e1;
+ e1 = e3;
+
+ e3 = stepminor;
+ stepminor = stepmajor;
+ stepmajor = e3;
+ SetYMajorOctant(octant);
+ }
+ e = -len;
+ e1 <<= 1;
+ e3 = e << 1;
+ FIXUP_ERROR(e, octant, bias);
+ if (!capNotLast)
+ len++;
+ if (and == 0) {
+ while (len--) {
+ STORE(bits, xor);
+ bits += stepmajor;
+ e += e1;
+ if (e >= 0) {
+ bits += stepminor;
+ e += e3;
+ }
+ }
+ }
+ else {
+ while (len--) {
+ RROP(bits, and, xor);
+ bits += stepmajor;
+ e += e1;
+ if (e >= 0) {
+ bits += stepminor;
+ e += e3;
+ }
+ }
+ }
+ }
+ }
+ }
+
+ fbFinishAccess(pDrawable);
+}
+#endif
+
+#undef MUL
+#undef STORE
+#undef RROP
+#undef UNIT
+#undef USE_SOLID
+
+#undef isClipped
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 21:51:36 +0000