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Diffstat (limited to 'src/ffb_wline.c')
| -rw-r--r-- | src/ffb_wline.c | 900 |
1 files changed, 0 insertions, 900 deletions
diff --git a/src/ffb_wline.c b/src/ffb_wline.c deleted file mode 100644 index 08afe8f..0000000 --- a/src/ffb_wline.c +++ /dev/null @@ -1,900 +0,0 @@ -/* - * Acceleration for the Creator and Creator3D framebuffer - Wide line rops. - * - * Copyright (C) 1999 David S. Miller (davem@redhat.com) - * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com) - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * JAKUB JELINEK OR DAVID MILLER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - * - */ -/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/sunffb/ffb_wline.c,v 1.2 2000/05/23 04:47:45 dawes Exp $ */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#define PSZ 32 - -#include "ffb.h" -#include "ffb_regs.h" -#include "ffb_rcache.h" -#include "ffb_fifo.h" - -#include "pixmapstr.h" -#include "scrnintstr.h" - -#include "cfb.h" - -#include "miwideline.h" - -#error If we start using this again, need to fixup FFB_WRITE_ATTRIBUTES for wids -DaveM - -/* Wheee, wide lines... */ -extern int miPolyBuildEdge(); - -static int LeftClip, RightClip, TopClip, BottomClip; - -#define Y_IN_BOX(y) (((y) >= TopClip) && ((y) <= BottomClip)) -#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; \ - } \ -} - -#define CreatorPointHelper(pFfb, x, y) \ -do { \ - ffb_fbcPtr ffb = (pFfb)->regs; \ - FFB_WRITE_DRAWOP((pFfb), ffb, FFB_DRAWOP_DOT); \ - FFBFifo(pFfb, 2); \ - FFB_WRITE64(&ffb->bh, (y), (x)); \ -} while (0) - -static void CreatorFillRectHelper(FFBPtr pFfb, - int x, int y, int dx, int dy) -{ - ffb_fbcPtr ffb = pFfb->regs; - int x2 = x + dx - 1; - int y2 = y + dy - 1; - - if(x < LeftClip) - x = LeftClip; - if(x2 > RightClip) - x2 = RightClip; - if(y < TopClip) - y = TopClip; - if(y2 > BottomClip) - y2 = BottomClip; - - dx = x2 - x + 1; - dy = y2 - y + 1; - - if((dx > 0) && (dy > 0)) { - FFB_WRITE_DRAWOP(pFfb, ffb, FFB_DRAWOP_RECTANGLE); - FFBFifo(pFfb, 4); - FFB_WRITE64(&ffb->by, y, x); - FFB_WRITE64_2(&ffb->bh, dy, dx); - } -} - -/* The span helper does not check for y being clipped, caller beware */ -static void CreatorSpanHelper(FFBPtr pFfb, - int x1, int y, int width) -{ - ffb_fbcPtr ffb = pFfb->regs; - int x2 = x1 + width - 1; - - if(x1 < LeftClip) - x1 = LeftClip; - if(x2 > RightClip) - x2 = RightClip; - width = x2 - x1 + 1; - - if(width > 0) { - FFB_WRITE_DRAWOP(pFfb, ffb, FFB_DRAWOP_RECTANGLE); - FFBFifo(pFfb, 4); - FFB_WRITE64(&ffb->by, y, x1); - FFB_WRITE64_2(&ffb->bh, 1, width); - } -} - -#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 -CreatorFillPolyHelper (DrawablePtr pDrawable, GCPtr pGC, - int y, int overall_height, - PolyEdgePtr left, PolyEdgePtr right, - int left_count, int right_count) -{ - FFBPtr pFfb = GET_FFB_FROM_SCREEN(pDrawable->pScreen); - 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, height; - int left_height = 0; - int right_height = 0; - int xorg = 0; - - if (pGC->miTranslate) { - y += pDrawable->y; - xorg = pDrawable->x; - } - - 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; - while (height--) { - if((right_x > left_x) && Y_IN_BOX(y)) - CreatorSpanHelper(pFfb, 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 -CreatorWideSegment (DrawablePtr pDrawable, GCPtr pGC, - int x1, int y1, int x2, int y2, - Bool projectLeft, Bool projectRight, - LineFacePtr leftFace, LineFacePtr rightFace) -{ - FFBPtr pFfb = GET_FFB_FROM_SCREEN(pDrawable->pScreen); - double l, L, r, xa, ya, projectXoff, projectYoff, k, maxy; - int x, y, dx, dy, finaly, lefty, righty, topy, bottomy, signdx; - PolyEdgePtr left, right, top, bottom; - PolyEdgeRec lefts[2], rights[2]; - LineFacePtr tface; - int lw = pGC->lineWidth; - - /* 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; - if(pGC->miTranslate) { - x += pDrawable->x; - y += pDrawable->y; - } - CreatorFillRectHelper(pFfb, 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; - if(pGC->miTranslate) { - x += pDrawable->x; - y += pDrawable->y; - } - CreatorFillRectHelper(pFfb, 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; - - if (projectLeft | projectRight) { - 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; - CreatorFillPolyHelper (pDrawable, pGC, topy, - bottom->height + bottomy - topy, lefts, rights, 2, 2); - } -} - -static void -CreatorLineArcI (DrawablePtr pDraw, GCPtr pGC, int xorg, int yorg) -{ - FFBPtr pFfb = GET_FFB_FROM_SCREEN(pDraw->pScreen); - int x, y, e, ex, slw; - - if (pGC->miTranslate) { - xorg += pDraw->x; - yorg += pDraw->y; - } - - slw = pGC->lineWidth; - if (slw == 1) { - CreatorPointHelper(pFfb, xorg, yorg); - return; - } - - 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--; - - if(Y_IN_BOX(yorg - y)) - CreatorSpanHelper(pFfb, xorg - x, yorg - y, slw); - - if ((y != 0) && ((slw > 1) || (e != ex)) && Y_IN_BOX(yorg + y)) - CreatorSpanHelper(pFfb, xorg - x, yorg + y, slw); - } -} - -static void -CreatorLineArcD (DrawablePtr pDraw, GCPtr pGC, - double xorg, double yorg, - PolyEdgePtr edge1, int edgey1, Bool edgeleft1, - PolyEdgePtr edge2, int edgey2, Bool edgeleft2) -{ - FFBPtr pFfb = GET_FFB_FROM_SCREEN(pDraw->pScreen); - double radius, x0, y0, el, er, yk, xlk, xrk, k; - int xbase, ybase, y, boty, xl, xr, xcl, xcr, ymin, ymax, ymin1, ymin2; - Bool edge1IsMin, edge2IsMin; - - xbase = floor(xorg); - x0 = xorg - xbase; - ybase = ICEIL (yorg); - y0 = yorg - ybase; - if (pGC->miTranslate) { - xbase += pDraw->x; - ybase += pDraw->y; - edge1->x += pDraw->x; - edge2->x += pDraw->x; - edgey1 += pDraw->y; - edgey2 += pDraw->y; - } - - 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) && Y_IN_BOX(ybase)) - CreatorSpanHelper(pFfb, 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) && Y_IN_BOX(ybase)) - CreatorSpanHelper(pFfb, xcl, ybase, xcr - xcl + 1); - } -} - - -static void -CreatorLineArc (DrawablePtr pDraw, GCPtr pGC, - LineFacePtr leftFace, LineFacePtr rightFace, - double xorg, double yorg, - Bool isInt) -{ - int xorgi, yorgi, edgey1, edgey2; - PolyEdgeRec edge1, edge2; - Bool edgeleft1, edgeleft2; - - if (isInt) { - xorgi = leftFace ? leftFace->x : rightFace->x; - yorgi = leftFace ? leftFace->y : rightFace->y; - } - 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) - CreatorLineArcI(pDraw, pGC, xorgi, yorgi); - else - CreatorLineArcD(pDraw, pGC, xorg, yorg, - &edge1, edgey1, edgeleft1, - &edge2, edgey2, edgeleft2); -} - -static void -CreatorLineJoin (DrawablePtr pDrawable, GCPtr pGC, LineFacePtr pLeft, LineFacePtr pRight) -{ - FFBPtr pFfb = GET_FFB_FROM_SCREEN(pDrawable->pScreen); - double mx, my, denom; - PolyVertexRec vertices[4]; - PolySlopeRec slopes[4]; - PolyEdgeRec left[4], right[4]; - int edgecount, nleft, nright, y, height, 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) { - if(pGC->miTranslate) - CreatorPointHelper(pFfb, - pLeft->x + pDrawable->x, - pLeft->y + pDrawable->y); - else - CreatorPointHelper(pFfb, pLeft->x, pLeft->y); - return; - } - } else { - if (joinStyle == JoinRound) { - CreatorLineArc(pDrawable, 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); - CreatorFillPolyHelper(pDrawable, pGC, y, height, left, right, nleft, nright); -} - -void -CreatorWideLineSolid (DrawablePtr pDrawable, GCPtr pGC, int mode, int npt, DDXPointPtr pPts) -{ - int x1, y1, x2, y2, first = TRUE; - Bool projectLeft, projectRight, somethingDrawn = FALSE, selfJoin = FALSE; - LineFaceRec leftFace, rightFace, prevRightFace, firstFace; - cfbPrivGCPtr devPriv = cfbGetGCPrivate(pGC); - FFBPtr pFfb = GET_FFB_FROM_SCREEN(pDrawable->pScreen); - ffb_fbcPtr ffb = pFfb->regs; - RegionPtr clip; - int numRects; - unsigned int ppc; - BoxPtr pbox; - - clip = ((cfbPrivGC *)(pGC->devPrivates[cfbGCPrivateIndex].ptr))->pCompositeClip; - numRects = REGION_NUM_RECTS(clip); - if (!numRects) - return; - if (!(ppc = FFBSetClip(pFfb, ffb, clip, numRects))) { - miWideLine(pDrawable, pGC, mode, npt, pPts); - return; - } - - LeftClip = 2048; TopClip = 2048; - RightClip = 0; BottomClip = 0; - for (pbox = REGION_RECTS(clip); numRects; numRects--, pbox++) { - if (pbox->x1 < LeftClip) LeftClip = pbox->x1; - if (pbox->x2 > RightClip) RightClip = pbox->x2 - 1; - if (pbox->y1 < TopClip) TopClip = pbox->y1; - if (pbox->y2 > BottomClip) BottomClip = pbox->y2 - 1; - } - - FFB_WRITE_ATTRIBUTES(pFfb, - ppc|FFB_PPC_APE_DISABLE|FFB_PPC_TBE_OPAQUE| - FFB_PPC_XS_CONST|FFB_PPC_YS_CONST|FFB_PPC_ZS_CONST|FFB_PPC_CS_CONST, - FFB_PPC_VCE_MASK|FFB_PPC_ACE_MASK|FFB_PPC_APE_MASK|FFB_PPC_TBE_MASK| - FFB_PPC_XS_MASK|FFB_PPC_YS_MASK|FFB_PPC_ZS_MASK|FFB_PPC_CS_MASK, - pGC->planemask, - FFB_ROP_EDIT_BIT|pGC->alu, - -1, pGC->fgPixel, - FFB_FBC_DEFAULT); - - 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; - - while (--npt) { - x1 = x2; - y1 = y2; - ++pPts; - x2 = pPts->x; - y2 = pPts->y; - if (mode == CoordModePrevious) { - x2 += x1; - y2 += y1; - } - if ((x1 != x2) || (y1 != y2)) { - somethingDrawn = TRUE; - if ((npt == 1) && (pGC->capStyle == CapProjecting) && !selfJoin) - projectRight = TRUE; - CreatorWideSegment(pDrawable, pGC, x1, y1, x2, y2, - projectLeft, projectRight, &leftFace, &rightFace); - if (first) { - if (selfJoin) - firstFace = leftFace; - else if (pGC->capStyle == CapRound) { - if (pGC->lineWidth == 1) { - if(pGC->miTranslate) - CreatorPointHelper(pFfb, - x1 + pDrawable->x, - y1 + pDrawable->y); - else - CreatorPointHelper(pFfb, x1, y1); - } else - CreatorLineArc(pDrawable, pGC, - &leftFace, (LineFacePtr) NULL, - (double)0.0, (double)0.0, - TRUE); - } - } else - CreatorLineJoin (pDrawable, pGC, &leftFace, &prevRightFace); - - prevRightFace = rightFace; - first = FALSE; - projectLeft = FALSE; - } - if (npt == 1 && somethingDrawn) { - if (selfJoin) - CreatorLineJoin (pDrawable, pGC, &firstFace, &rightFace); - else if (pGC->capStyle == CapRound) { - if (pGC->lineWidth == 1) { - if(pGC->miTranslate) - CreatorPointHelper(pFfb, - x2 + pDrawable->x, - y2 + pDrawable->y); - else - CreatorPointHelper(pFfb, x2, y2); - } else - CreatorLineArc (pDrawable, pGC, - (LineFacePtr) NULL, &rightFace, - (double)0.0, (double)0.0, - TRUE); - } - } - } - - /* handle crock where all points are coincedent */ - if (!somethingDrawn) { - projectLeft = (pGC->capStyle == CapProjecting); - CreatorWideSegment (pDrawable, pGC, - x2, y2, x2, y2, projectLeft, projectLeft, - &leftFace, &rightFace); - if (pGC->capStyle == CapRound) { - CreatorLineArc (pDrawable, pGC, - &leftFace, (LineFacePtr) NULL, - (double)0.0, (double)0.0, - TRUE); - rightFace.dx = -1; /* sleezy hack to make it work */ - CreatorLineArc (pDrawable, pGC, - (LineFacePtr) NULL, &rightFace, - (double)0.0, (double)0.0, - TRUE); - } - } - pFfb->rp_active = 1; -} |