From 3562e78743202e43aec8727005182a2558117eca Mon Sep 17 00:00:00 2001 From: marha Date: Sun, 28 Jun 2009 22:07:26 +0000 Subject: Checked in the following released items: xkeyboard-config-1.4.tar.gz ttf-bitstream-vera-1.10.tar.gz font-alias-1.0.1.tar.gz font-sun-misc-1.0.0.tar.gz font-sun-misc-1.0.0.tar.gz font-sony-misc-1.0.0.tar.gz font-schumacher-misc-1.0.0.tar.gz font-mutt-misc-1.0.0.tar.gz font-misc-misc-1.0.0.tar.gz font-misc-meltho-1.0.0.tar.gz font-micro-misc-1.0.0.tar.gz font-jis-misc-1.0.0.tar.gz font-isas-misc-1.0.0.tar.gz font-dec-misc-1.0.0.tar.gz font-daewoo-misc-1.0.0.tar.gz font-cursor-misc-1.0.0.tar.gz font-arabic-misc-1.0.0.tar.gz font-winitzki-cyrillic-1.0.0.tar.gz font-misc-cyrillic-1.0.0.tar.gz font-cronyx-cyrillic-1.0.0.tar.gz font-screen-cyrillic-1.0.1.tar.gz font-xfree86-type1-1.0.1.tar.gz font-adobe-utopia-type1-1.0.1.tar.gz font-ibm-type1-1.0.0.tar.gz font-bitstream-type1-1.0.0.tar.gz font-bitstream-speedo-1.0.0.tar.gz font-bh-ttf-1.0.0.tar.gz font-bh-type1-1.0.0.tar.gz font-bitstream-100dpi-1.0.0.tar.gz font-bh-lucidatypewriter-100dpi-1.0.0.tar.gz font-bh-100dpi-1.0.0.tar.gz font-adobe-utopia-100dpi-1.0.1.tar.gz font-adobe-100dpi-1.0.0.tar.gz font-util-1.0.1.tar.gz font-bitstream-75dpi-1.0.0.tar.gz font-bh-lucidatypewriter-75dpi-1.0.0.tar.gz font-adobe-utopia-75dpi-1.0.1.tar.gz font-bh-75dpi-1.0.0.tar.gz bdftopcf-1.0.1.tar.gz font-adobe-75dpi-1.0.0.tar.gz mkfontscale-1.0.6.tar.gz openssl-0.9.8k.tar.gz bigreqsproto-1.0.2.tar.gz xtrans-1.2.2.tar.gz resourceproto-1.0.2.tar.gz inputproto-1.4.4.tar.gz compositeproto-0.4.tar.gz damageproto-1.1.0.tar.gz zlib-1.2.3.tar.gz xkbcomp-1.0.5.tar.gz freetype-2.3.9.tar.gz pthreads-w32-2-8-0-release.tar.gz pixman-0.12.0.tar.gz kbproto-1.0.3.tar.gz evieext-1.0.2.tar.gz fixesproto-4.0.tar.gz recordproto-1.13.2.tar.gz randrproto-1.2.2.tar.gz scrnsaverproto-1.1.0.tar.gz renderproto-0.9.3.tar.gz xcmiscproto-1.1.2.tar.gz fontsproto-2.0.2.tar.gz xextproto-7.0.3.tar.gz xproto-7.0.14.tar.gz libXdmcp-1.0.2.tar.gz libxkbfile-1.0.5.tar.gz libfontenc-1.0.4.tar.gz libXfont-1.3.4.tar.gz libX11-1.1.5.tar.gz libXau-1.0.4.tar.gz libxcb-1.1.tar.gz xorg-server-1.5.3.tar.gz --- xorg-server/hw/xfree86/xaa/xaaWideLine.c | 921 +++++++++++++++++++++++++++++++ 1 file changed, 921 insertions(+) create mode 100644 xorg-server/hw/xfree86/xaa/xaaWideLine.c (limited to 'xorg-server/hw/xfree86/xaa/xaaWideLine.c') diff --git a/xorg-server/hw/xfree86/xaa/xaaWideLine.c b/xorg-server/hw/xfree86/xaa/xaaWideLine.c new file mode 100644 index 000000000..a684d6676 --- /dev/null +++ b/xorg-server/hw/xfree86/xaa/xaaWideLine.c @@ -0,0 +1,921 @@ +/* + +XAAPolylinesWideSolid does not maintain a span list and subsequently does +not follow the "touch-each-pixel-once" rules for wide lines and arcs. +This means it can only be used in the case where we have +miSpansEasyRop(pGC->alu). Since we clip spans on the fly, we +limited usage of this function to one rect situations. This +function is used only for solid lines. + + Adapted from miWideLine by Mark Vojkovich (mvojkovi@ucsd.edu) +Original mi code written by Keith Packard. + +*/ + +#ifdef HAVE_XORG_CONFIG_H +#include +#endif + +#include + +#include "misc.h" +#include "xf86.h" +#include "xf86_OSproc.h" + +#include +#include "windowstr.h" +#include "gcstruct.h" +#include "regionstr.h" +#include "miwideline.h" +#include "mi.h" +#include "xf86str.h" +#include "xaa.h" +#include "xaalocal.h" + +#define DRAW_POINT(pScrn, x, y) \ + if(hardClip) (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, 1, 1); \ + else XAAPointHelper(pScrn, x, y) + +#define FILL_RECT(pScrn, x, y, w, h) \ + if(hardClip) (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, w, h); \ + else XAAFillRectHelper(pScrn, x, y, w, h) + +#define FILL_SPAN(pScrn, x, y, w) \ + if(hardClip) (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, w, 1); \ + else XAASpanHelper(pScrn, x, y, w) + + +#define CLIPSTEPEDGE(edgey,edge,edgeleft) \ + if (ybase == edgey) { \ + if (edgeleft) { \ + if (edge->x > xcl) \ + xcl = edge->x; \ + } else { \ + if (edge->x < xcr) \ + xcr = edge->x; \ + } \ + edgey++; \ + edge->x += edge->stepx; \ + edge->e += edge->dx; \ + if (edge->e > 0) { \ + edge->x += edge->signdx; \ + edge->e -= edge->dy; \ + } \ + } + +static void +XAAPointHelper(ScrnInfoPtr pScrn, int x, int y) +{ + XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn); + BoxPtr extents = infoRec->ClipBox; + + if((x >= extents->x1) && (x < extents->x2) && + (y >= extents->y1) && (y < extents->y2)) + (*infoRec->SubsequentSolidFillRect)(pScrn, x, y, 1, 1); +} + +static void +XAAFillRectHelper(ScrnInfoPtr pScrn, int x1, int y1, int dx, int dy) +{ + XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn); + BoxPtr extents = infoRec->ClipBox; + int x2 = x1 + dx; + int y2 = y1 + dy; + + if(x1 < extents->x1) x1 = extents->x1; + if(x2 >= extents->x2) x2 = extents->x2; + if((dx = x2 - x1)<1) return; + if(y1 < extents->y1) y1 = extents->y1; + if(y2 >= extents->y2) y2 = extents->y2; + if((dy = y2 - y1)<1) return; + + (*infoRec->SubsequentSolidFillRect)(pScrn, x1, y1, dx, dy); +} + + +static void +XAASpanHelper(ScrnInfoPtr pScrn, int x1, int y, int width) +{ + XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_SCRNINFOPTR(pScrn); + BoxPtr extents = infoRec->ClipBox; + int x2; + + if((y < extents->y1) || (y >= extents->y2)) return; + + x2 = x1 + width; + if(x1 < extents->x1) x1 = extents->x1; + if(x2 > extents->x2) x2 = extents->x2; + width = x2 - x1; + + if(width > 0) + (*infoRec->SubsequentSolidFillRect)(pScrn, x1, y, width, 1); + +} + +#define FixError(x, dx, dy, e, sign, step, h) { \ + e += (h) * dx; \ + x += (h) * step; \ + if(e > 0) { \ + x += e * sign/dy; \ + e %= dy; \ + if(e) { \ + x += sign; \ + e -= dy; \ + } \ + } \ +} + + +static void +XAAFillPolyHelper ( + GCPtr pGC, + int y, /* start y coordinate */ + int overall_height, /* height of entire segment */ + PolyEdgePtr left, PolyEdgePtr right, + int left_count, int right_count ) +{ + XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC); + BoxPtr extents = infoRec->ClipBox; + int left_x, left_e, left_stepx, left_signdx, left_dy, left_dx; + int right_x, right_e, right_stepx, right_signdx, right_dy, right_dx; + int height, left_height, right_height; + int xorg; + Bool hardClip; + + if((y >= extents->y2) || ((y + overall_height) <= extents->y1)) + return; + + /* Muffle compiler */ + left_x = left_e = left_stepx = left_signdx = left_dy = left_dx = 0; + right_x = right_e = right_stepx = right_signdx = right_dy = right_dx = 0; + + left_height = right_height = 0; + xorg = 0; + + hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL); + + while ((left_count || left_height) && (right_count || right_height)) { + if (!left_height && left_count) { + left_height = left->height; + left_x = left->x + xorg; + left_stepx = left->stepx; + left_signdx = left->signdx; + left_e = left->e; + left_dy = left->dy; + left_dx = left->dx; + left_count--; + left++; + } + if (!right_height && right_count) { + right_height = right->height; + right_x = right->x + xorg + 1; + right_stepx = right->stepx; + right_signdx = right->signdx; + right_e = right->e; + right_dy = right->dy; + right_dx = right->dx; + right_count--; + right++; + } + + height = (left_height > right_height) ? right_height : left_height; + + left_height -= height; + right_height -= height; + + if(hardClip && infoRec->SubsequentSolidFillTrap && (height > 6)) { + int right_DX, left_DX; + + right_DX = (right_dx * right_signdx) + (right_stepx * right_dy); + left_DX = (left_dx * left_signdx) + (left_stepx * left_dy); + + (*infoRec->SubsequentSolidFillTrap)(infoRec->pScrn, y, height, + left_x, left_DX, left_dy, left_e, + right_x - 1, right_DX, right_dy, right_e); + + FixError(left_x, left_dx, left_dy, left_e, left_signdx, + left_stepx, height); + FixError(right_x, right_dx, right_dy, right_e, right_signdx, + right_stepx, height); + y += height; + continue; + } + + while (height--) { + if(right_x > left_x) { + FILL_SPAN(infoRec->pScrn, left_x, y, right_x - left_x); + } + y++; + + left_x += left_stepx; + left_e += left_dx; + if (left_e > 0) { + left_x += left_signdx; + left_e -= left_dy; + } + right_x += right_stepx; + right_e += right_dx; + if (right_e > 0) { + right_x += right_signdx; + right_e -= right_dy; + } + + } + } +} + + + +static void +XAAWideSegment ( + GCPtr pGC, + int x1, int y1, int x2, int y2, + Bool projectLeft, Bool projectRight, + LineFacePtr leftFace, LineFacePtr rightFace ) +{ + XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC); + double l, L, r; + double xa, ya; + double projectXoff, projectYoff; + double k; + double maxy; + int x, y; + int dx, dy; + int finaly; + PolyEdgePtr left, right; + PolyEdgePtr top, bottom; + int lefty, righty, topy, bottomy; + int signdx; + PolyEdgeRec lefts[2], rights[2]; + LineFacePtr tface; + int lw = pGC->lineWidth; + Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL); + + /* draw top-to-bottom always */ + if ((y2 < y1) || ((y2 == y1) && (x2 < x1))) { + x = x1; + x1 = x2; + x2 = x; + + y = y1; + y1 = y2; + y2 = y; + + x = projectLeft; + projectLeft = projectRight; + projectRight = x; + + tface = leftFace; + leftFace = rightFace; + rightFace = tface; + } + + dy = y2 - y1; + signdx = 1; + dx = x2 - x1; + if (dx < 0) + signdx = -1; + + leftFace->x = x1; + leftFace->y = y1; + leftFace->dx = dx; + leftFace->dy = dy; + + rightFace->x = x2; + rightFace->y = y2; + rightFace->dx = -dx; + rightFace->dy = -dy; + + if (!dy) { + rightFace->xa = 0; + rightFace->ya = (double) lw / 2.0; + rightFace->k = -(double) (lw * dx) / 2.0; + leftFace->xa = 0; + leftFace->ya = -rightFace->ya; + leftFace->k = rightFace->k; + x = x1; + if (projectLeft) + x -= (lw >> 1); + y = y1 - (lw >> 1); + dx = x2 - x; + if (projectRight) + dx += ((lw + 1) >> 1); + dy = lw; + FILL_RECT(infoRec->pScrn, x, y, dx, dy); + } else if (!dx) { + leftFace->xa = (double) lw / 2.0; + leftFace->ya = 0; + leftFace->k = (double) (lw * dy) / 2.0; + rightFace->xa = -leftFace->xa; + rightFace->ya = 0; + rightFace->k = leftFace->k; + y = y1; + if (projectLeft) + y -= lw >> 1; + x = x1 - (lw >> 1); + dy = y2 - y; + if (projectRight) + dy += ((lw + 1) >> 1); + dx = lw; + FILL_RECT(infoRec->pScrn, x, y, dx, dy); + } else { + l = ((double) lw) / 2.0; + L = sqrt((double)(dx*dx + dy*dy)); + + if (dx < 0) { + right = &rights[1]; + left = &lefts[0]; + top = &rights[0]; + bottom = &lefts[1]; + } else { + right = &rights[0]; + left = &lefts[1]; + top = &lefts[0]; + bottom = &rights[1]; + } + r = l / L; + + /* coord of upper bound at integral y */ + ya = -r * dx; + xa = r * dy; + + projectXoff = -ya; + projectYoff = xa; + + /* xa * dy - ya * dx */ + k = l * L; + + leftFace->xa = xa; + leftFace->ya = ya; + leftFace->k = k; + rightFace->xa = -xa; + rightFace->ya = -ya; + rightFace->k = k; + + if (projectLeft) + righty = miPolyBuildEdge (xa - projectXoff, ya - projectYoff, + k, dx, dy, x1, y1, 0, right); + else + righty = miPolyBuildEdge (xa, ya, + k, dx, dy, x1, y1, 0, right); + + /* coord of lower bound at integral y */ + ya = -ya; + xa = -xa; + + /* xa * dy - ya * dx */ + k = - k; + + if (projectLeft) + lefty = miPolyBuildEdge (xa - projectXoff, ya - projectYoff, + k, dx, dy, x1, y1, 1, left); + else + lefty = miPolyBuildEdge (xa, ya, + k, dx, dy, x1, y1, 1, left); + + /* coord of top face at integral y */ + + if (signdx > 0) { + ya = -ya; + xa = -xa; + } + + if (projectLeft) { + double xap = xa - projectXoff; + double yap = ya - projectYoff; + topy = miPolyBuildEdge (xap, yap, xap * dx + yap * dy, + -dy, dx, x1, y1, dx > 0, top); + } + else + topy = miPolyBuildEdge(xa, ya, 0.0, + -dy, dx, x1, y1, dx > 0, top); + + /* coord of bottom face at integral y */ + + if (projectRight) { + double xap = xa + projectXoff; + double yap = ya + projectYoff; + bottomy = miPolyBuildEdge (xap, yap, xap * dx + yap * dy, + -dy, dx, x2, y2, dx < 0, bottom); + maxy = -ya + projectYoff; + } else { + bottomy = miPolyBuildEdge (xa, ya, 0.0, + -dy, dx, x2, y2, dx < 0, bottom); + maxy = -ya; + } + + finaly = ICEIL (maxy) + y2; + + if (dx < 0) { + left->height = bottomy - lefty; + right->height = finaly - righty; + top->height = righty - topy; + } else { + right->height = bottomy - righty; + left->height = finaly - lefty; + top->height = lefty - topy; + } + bottom->height = finaly - bottomy; + XAAFillPolyHelper (pGC, topy, + bottom->height + bottomy - topy, lefts, rights, 2, 2); + } +} + + +static void +XAALineArcI (GCPtr pGC, int xorg, int yorg) +{ + XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC); + int x, y, e, ex; + int slw = pGC->lineWidth; + Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL); + + y = (slw >> 1) + 1; + if (slw & 1) + e = - ((y << 2) + 3); + else + e = - (y << 3); + ex = -4; + x = 0; + while (y) { + e += (y << 3) - 4; + while (e >= 0) { + x++; + e += (ex = -((x << 3) + 4)); + } + y--; + slw = (x << 1) + 1; + if ((e == ex) && (slw > 1)) + slw--; + + FILL_SPAN(infoRec->pScrn, xorg - x, yorg - y, slw); + + if ((y != 0) && ((slw > 1) || (e != ex))) { + FILL_SPAN(infoRec->pScrn, xorg - x, yorg + y, slw); + } + } +} + + +static void +XAALineArcD ( + GCPtr pGC, + double xorg, + double yorg, + PolyEdgePtr edge1, + int edgey1, + Bool edgeleft1, + PolyEdgePtr edge2, + int edgey2, + Bool edgeleft2 ) +{ + XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC); + double radius, x0, y0, el, er, yk, xlk, xrk, k; + int xbase, ybase, y, boty, xl, xr, xcl, xcr; + int ymin, ymax; + Bool edge1IsMin, edge2IsMin; + int ymin1, ymin2; + Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL); + + + xbase = floor(xorg); + x0 = xorg - xbase; + ybase = ICEIL (yorg); + y0 = yorg - ybase; + + xlk = x0 + x0 + 1.0; + xrk = x0 + x0 - 1.0; + yk = y0 + y0 - 1.0; + radius = ((double)pGC->lineWidth) / 2.0; + y = floor(radius - y0 + 1.0); + ybase -= y; + ymin = ybase; + ymax = 65536; + edge1IsMin = FALSE; + ymin1 = edgey1; + if (edge1->dy >= 0) { + if (!edge1->dy) { + if (edgeleft1) + edge1IsMin = TRUE; + else + ymax = edgey1; + edgey1 = 65536; + } else if ((edge1->signdx < 0) == edgeleft1) + edge1IsMin = TRUE; + } + edge2IsMin = FALSE; + ymin2 = edgey2; + if (edge2->dy >= 0) { + if (!edge2->dy) { + if (edgeleft2) + edge2IsMin = TRUE; + else + ymax = edgey2; + edgey2 = 65536; + } else if ((edge2->signdx < 0) == edgeleft2) + edge2IsMin = TRUE; + } + if (edge1IsMin) { + ymin = ymin1; + if (edge2IsMin && (ymin1 > ymin2)) + ymin = ymin2; + } else if (edge2IsMin) + ymin = ymin2; + el = radius * radius - ((y + y0) * (y + y0)) - (x0 * x0); + er = el + xrk; + xl = 1; + xr = 0; + if (x0 < 0.5) { + xl = 0; + el -= xlk; + } + boty = (y0 < -0.5) ? 1 : 0; + if (ybase + y - boty > ymax) + boty = ymax - ybase - y; + while (y > boty) { + k = (y << 1) + yk; + er += k; + while (er > 0.0) { + xr++; + er += xrk - (xr << 1); + } + el += k; + while (el >= 0.0) { + xl--; + el += (xl << 1) - xlk; + } + y--; + ybase++; + if (ybase < ymin) + continue; + xcl = xl + xbase; + xcr = xr + xbase; + CLIPSTEPEDGE(edgey1, edge1, edgeleft1); + CLIPSTEPEDGE(edgey2, edge2, edgeleft2); + if(xcr >= xcl) { + FILL_SPAN(infoRec->pScrn, xcl, ybase, xcr - xcl + 1); + } + } + er = xrk - (xr << 1) - er; + el = (xl << 1) - xlk - el; + boty = floor(-y0 - radius + 1.0); + if (ybase + y - boty > ymax) + boty = ymax - ybase - y; + while (y > boty) { + k = (y << 1) + yk; + er -= k; + while ((er >= 0.0) && (xr >= 0)) { + xr--; + er += xrk - (xr << 1); + } + el -= k; + while ((el > 0.0) && (xl <= 0)) { + xl++; + el += (xl << 1) - xlk; + } + y--; + ybase++; + if (ybase < ymin) + continue; + xcl = xl + xbase; + xcr = xr + xbase; + CLIPSTEPEDGE(edgey1, edge1, edgeleft1); + CLIPSTEPEDGE(edgey2, edge2, edgeleft2); + if(xcr >= xcl) { + FILL_SPAN(infoRec->pScrn, xcl, ybase, xcr - xcl + 1); + } + } +} + + +static void +XAALineArc ( + GCPtr pGC, + LineFacePtr leftFace, + LineFacePtr rightFace, + double xorg, + double yorg, + Bool isInt ) +{ + int xorgi, yorgi; + PolyEdgeRec edge1, edge2; + int edgey1, edgey2; + Bool edgeleft1, edgeleft2; + + if (isInt) { + xorgi = leftFace ? leftFace->x : rightFace->x; + yorgi = leftFace ? leftFace->y : rightFace->y; + } else { /* Muffle compiler */ + xorgi = yorgi = 0; + } + edgey1 = 65536; + edgey2 = 65536; + edge1.x = 0; /* not used, keep memory checkers happy */ + edge1.dy = -1; + edge2.x = 0; /* not used, keep memory checkers happy */ + edge2.dy = -1; + edgeleft1 = FALSE; + edgeleft2 = FALSE; + + if ((pGC->lineWidth > 2) && + ((pGC->capStyle == CapRound && pGC->joinStyle != JoinRound) || + (pGC->joinStyle == JoinRound && pGC->capStyle == CapButt))) { + if (isInt) { + xorg = (double) xorgi; + yorg = (double) yorgi; + } + + if (leftFace && rightFace) + miRoundJoinClip (leftFace, rightFace, &edge1, &edge2, + &edgey1, &edgey2, &edgeleft1, &edgeleft2); + else if (leftFace) + edgey1 = miRoundCapClip (leftFace, isInt, &edge1, &edgeleft1); + else if (rightFace) + edgey2 = miRoundCapClip (rightFace, isInt, &edge2, &edgeleft2); + + isInt = FALSE; + } + + if (isInt) { + if(pGC->lineWidth == 1) { + XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC); + Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL); + DRAW_POINT(infoRec->pScrn, xorgi, yorgi); + } else + XAALineArcI(pGC, xorgi, yorgi); + } else + XAALineArcD(pGC, xorg, yorg, &edge1, edgey1, edgeleft1, + &edge2, edgey2, edgeleft2); + +} + + +static void +XAALineJoin ( + GCPtr pGC, + LineFacePtr pLeft, + LineFacePtr pRight ) +{ + double mx = 0, my = 0; + double denom = 0; + PolyVertexRec vertices[4]; + PolySlopeRec slopes[4]; + int edgecount; + PolyEdgeRec left[4], right[4]; + int nleft, nright; + int y, height; + int swapslopes; + int joinStyle = pGC->joinStyle; + int lw = pGC->lineWidth; + + if (lw == 1) { + /* Lines going in the same direction have no join */ + if ((pLeft->dx >= 0) == (pRight->dx <= 0)) + return; + if (joinStyle != JoinRound) { + denom = - pLeft->dx * (double)pRight->dy + pRight->dx * + (double)pLeft->dy; + if (denom == 0.0) + return; /* no join to draw */ + } + if (joinStyle != JoinMiter) { + XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC); + Bool hardClip = (infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL); + DRAW_POINT(infoRec->pScrn, pLeft->x, pLeft->y); + return; + } + } else { + if (joinStyle == JoinRound) { + XAALineArc(pGC, pLeft, pRight,(double)0.0, (double)0.0, TRUE); + return; + } + denom = - pLeft->dx * (double)pRight->dy + pRight->dx * + (double)pLeft->dy; + if (denom == 0.0) + return; /* no join to draw */ + } + + swapslopes = 0; + if (denom > 0) { + pLeft->xa = -pLeft->xa; + pLeft->ya = -pLeft->ya; + pLeft->dx = -pLeft->dx; + pLeft->dy = -pLeft->dy; + } else { + swapslopes = 1; + pRight->xa = -pRight->xa; + pRight->ya = -pRight->ya; + pRight->dx = -pRight->dx; + pRight->dy = -pRight->dy; + } + + vertices[0].x = pRight->xa; + vertices[0].y = pRight->ya; + slopes[0].dx = -pRight->dy; + slopes[0].dy = pRight->dx; + slopes[0].k = 0; + + vertices[1].x = 0; + vertices[1].y = 0; + slopes[1].dx = pLeft->dy; + slopes[1].dy = -pLeft->dx; + slopes[1].k = 0; + + vertices[2].x = pLeft->xa; + vertices[2].y = pLeft->ya; + + if (joinStyle == JoinMiter) { + my = (pLeft->dy * (pRight->xa * pRight->dy - pRight->ya * pRight->dx) - + pRight->dy * (pLeft->xa * pLeft->dy - pLeft->ya * pLeft->dx ))/ + denom; + if (pLeft->dy != 0) + mx = pLeft->xa + (my - pLeft->ya) * + (double) pLeft->dx / (double) pLeft->dy; + else + mx = pRight->xa + (my - pRight->ya) * + (double) pRight->dx / (double) pRight->dy; + + /* check miter limit */ + if ((mx * mx + my * my) * 4 > SQSECANT * lw * lw) + joinStyle = JoinBevel; + } + + if (joinStyle == JoinMiter) { + slopes[2].dx = pLeft->dx; + slopes[2].dy = pLeft->dy; + slopes[2].k = pLeft->k; + if (swapslopes) { + slopes[2].dx = -slopes[2].dx; + slopes[2].dy = -slopes[2].dy; + slopes[2].k = -slopes[2].k; + } + vertices[3].x = mx; + vertices[3].y = my; + slopes[3].dx = pRight->dx; + slopes[3].dy = pRight->dy; + slopes[3].k = pRight->k; + if (swapslopes) { + slopes[3].dx = -slopes[3].dx; + slopes[3].dy = -slopes[3].dy; + slopes[3].k = -slopes[3].k; + } + edgecount = 4; + } else { + double scale, dx, dy, adx, ady; + + adx = dx = pRight->xa - pLeft->xa; + ady = dy = pRight->ya - pLeft->ya; + if (adx < 0) + adx = -adx; + if (ady < 0) + ady = -ady; + scale = ady; + if (adx > ady) + scale = adx; + slopes[2].dx = (dx * 65536) / scale; + slopes[2].dy = (dy * 65536) / scale; + slopes[2].k = ((pLeft->xa + pRight->xa) * slopes[2].dy - + (pLeft->ya + pRight->ya) * slopes[2].dx) / 2.0; + edgecount = 3; + } + + y = miPolyBuildPoly (vertices, slopes, edgecount, pLeft->x, pLeft->y, + left, right, &nleft, &nright, &height); + XAAFillPolyHelper(pGC, y, height, left, right, nleft, nright); +} + + +void +XAAPolylinesWideSolid ( + DrawablePtr pDrawable, + GCPtr pGC, + int mode, + int npt, + DDXPointPtr pPts ) +{ + XAAInfoRecPtr infoRec = GET_XAAINFORECPTR_FROM_GC(pGC); + int x1, y1, x2, y2; + Bool projectLeft, projectRight; + LineFaceRec leftFace, rightFace, prevRightFace, firstFace; + int first = TRUE; + Bool somethingDrawn = FALSE; + Bool selfJoin = FALSE; + int xorg = pDrawable->x; + int yorg = pDrawable->y; + Bool hardClip = FALSE; + + if(!REGION_NUM_RECTS(pGC->pCompositeClip)) + return; + + if(REGION_NUM_RECTS(pGC->pCompositeClip) != 1) { + miWideLine(pDrawable, pGC, mode, npt, pPts); + return; + } + + x2 = pPts->x; + y2 = pPts->y; + if (npt > 1) { + if (mode == CoordModePrevious) { + int nptTmp; + register DDXPointPtr pPtsTmp; + + x1 = x2; + y1 = y2; + nptTmp = npt; + pPtsTmp = pPts + 1; + while (--nptTmp) { + x1 += pPtsTmp->x; + y1 += pPtsTmp->y; + ++pPtsTmp; + } + if ((x2 == x1) && (y2 == y1)) + selfJoin = TRUE; + } else if ((x2 == pPts[npt-1].x) && (y2 == pPts[npt-1].y)) + selfJoin = TRUE; + } + + projectLeft = ((pGC->capStyle == CapProjecting) && !selfJoin); + projectRight = FALSE; + + (*infoRec->SetupForSolidFill)(infoRec->pScrn, pGC->fgPixel, pGC->alu, + pGC->planemask); + + infoRec->ClipBox = &pGC->pCompositeClip->extents; + + if(infoRec->ClippingFlags & HARDWARE_CLIP_SOLID_FILL) { + hardClip = TRUE; + (*infoRec->SetClippingRectangle)(infoRec->pScrn, + infoRec->ClipBox->x1, infoRec->ClipBox->y1, + infoRec->ClipBox->x2 - 1, infoRec->ClipBox->y2 - 1); + } + + x2 += xorg; + y2 += yorg; + while (--npt) { + x1 = x2; + y1 = y2; + ++pPts; + x2 = pPts->x; + y2 = pPts->y; + if (mode == CoordModePrevious) { + x2 += x1; + y2 += y1; + } else { + x2 += xorg; + y2 += yorg; + } + if ((x1 != x2) || (y1 != y2)) { + somethingDrawn = TRUE; + if ((npt == 1) && (pGC->capStyle == CapProjecting) && !selfJoin) + projectRight = TRUE; + XAAWideSegment(pGC, x1, y1, x2, y2, + projectLeft, projectRight, &leftFace, &rightFace); + if (first) { + if (selfJoin) + firstFace = leftFace; + else if (pGC->capStyle == CapRound) { + if (pGC->lineWidth == 1) { + DRAW_POINT(infoRec->pScrn, x1, y1); + } else + XAALineArc(pGC,&leftFace, (LineFacePtr) NULL, + (double)0.0, (double)0.0,TRUE); + } + } else + XAALineJoin (pGC, &leftFace, &prevRightFace); + + prevRightFace = rightFace; + first = FALSE; + projectLeft = FALSE; + } + if (npt == 1 && somethingDrawn) { + if (selfJoin) + XAALineJoin (pGC, &firstFace, &rightFace); + else if (pGC->capStyle == CapRound) { + if (pGC->lineWidth == 1) { + DRAW_POINT(infoRec->pScrn, x2, y2); + } else + XAALineArc (pGC, (LineFacePtr) NULL, &rightFace, + (double)0.0, (double)0.0,TRUE); + } + } + } + /* handle crock where all points are coincedent */ + if (!somethingDrawn) { + projectLeft = (pGC->capStyle == CapProjecting); + XAAWideSegment (pGC, x2, y2, x2, y2, projectLeft, projectLeft, + &leftFace, &rightFace); + if (pGC->capStyle == CapRound) { + XAALineArc (pGC, &leftFace, (LineFacePtr) NULL, + (double)0.0, (double)0.0, TRUE); + rightFace.dx = -1; /* sleezy hack to make it work */ + XAALineArc (pGC, (LineFacePtr) NULL, &rightFace, + (double)0.0, (double)0.0, TRUE); + } + } + + infoRec->ClipBox = NULL; + if(hardClip) + (*infoRec->DisableClipping)(infoRec->pScrn); + + SET_SYNC_FLAG(infoRec); +} -- cgit v1.2.3