diff options
Diffstat (limited to 'nx-X11/programs/Xserver/fb/fbtrap.c.NX.original')
| -rw-r--r-- | nx-X11/programs/Xserver/fb/fbtrap.c.NX.original | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/nx-X11/programs/Xserver/fb/fbtrap.c.NX.original b/nx-X11/programs/Xserver/fb/fbtrap.c.NX.original deleted file mode 100644 index 1940bc209..000000000 --- a/nx-X11/programs/Xserver/fb/fbtrap.c.NX.original +++ /dev/null @@ -1,242 +0,0 @@ -/* - * $Id: fbtrap.c,v 1.5 2005/07/03 07:01:23 daniels Exp $ - * - * Copyright © 2004 Keith Packard - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation, and that the name of Keith Packard not be used in - * advertising or publicity pertaining to distribution of the software without - * specific, written prior permission. Keith Packard makes no - * representations about the suitability of this software for any purpose. It - * is provided "as is" without express or implied warranty. - * - * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, - * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO - * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR - * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, - * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER - * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. - */ - -#ifdef HAVE_DIX_CONFIG_H -#include <dix-config.h> -#endif - -#include "fb.h" - -#ifdef RENDER - -#include "picturestr.h" -#include "mipict.h" -#include "renderedge.h" -#include "fbpict.h" - -void -fbAddTraps (PicturePtr pPicture, - INT16 x_off, - INT16 y_off, - int ntrap, - xTrap *traps) -{ - FbBits *buf; - int bpp; - int width; - int stride; - int height; - int pxoff, pyoff; - - xFixed x_off_fixed; - xFixed y_off_fixed; - RenderEdge l, r; - xFixed t, b; - - fbGetDrawable (pPicture->pDrawable, buf, stride, bpp, pxoff, pyoff); - - width = pPicture->pDrawable->width; - height = pPicture->pDrawable->height; - x_off += pxoff; - y_off += pyoff; - - x_off_fixed = IntToxFixed(y_off); - y_off_fixed = IntToxFixed(y_off); - - while (ntrap--) - { - t = traps->top.y + y_off_fixed; - if (t < 0) - t = 0; - t = RenderSampleCeilY (t, bpp); - - b = traps->bot.y + y_off_fixed; - if (xFixedToInt (b) >= height) - b = IntToxFixed (height) - 1; - b = RenderSampleFloorY (b, bpp); - - if (b >= t) - { - /* initialize edge walkers */ - RenderEdgeInit (&l, bpp, t, - traps->top.l + x_off_fixed, - traps->top.y + y_off_fixed, - traps->bot.l + x_off_fixed, - traps->bot.y + y_off_fixed); - - RenderEdgeInit (&r, bpp, t, - traps->top.r + x_off_fixed, - traps->top.y + y_off_fixed, - traps->bot.r + x_off_fixed, - traps->bot.y + y_off_fixed); - - fbRasterizeEdges (buf, bpp, width, stride, &l, &r, t, b); - } - traps++; - } -} - -void -fbRasterizeTrapezoid (PicturePtr pPicture, - xTrapezoid *trap, - int x_off, - int y_off) -{ - FbBits *buf; - int bpp; - int width; - int stride; - int height; - int pxoff, pyoff; - - xFixed x_off_fixed; - xFixed y_off_fixed; - RenderEdge l, r; - xFixed t, b; - - if (!xTrapezoidValid (trap)) - return; - - fbGetDrawable (pPicture->pDrawable, buf, stride, bpp, pxoff, pyoff); - - width = pPicture->pDrawable->width; - height = pPicture->pDrawable->height; - x_off += pxoff; - y_off += pyoff; - - x_off_fixed = IntToxFixed(x_off); - y_off_fixed = IntToxFixed(y_off); - t = trap->top + y_off_fixed; - if (t < 0) - t = 0; - t = RenderSampleCeilY (t, bpp); - - b = trap->bottom + y_off_fixed; - if (xFixedToInt (b) >= height) - b = IntToxFixed (height) - 1; - b = RenderSampleFloorY (b, bpp); - - if (b >= t) - { - /* initialize edge walkers */ - RenderLineFixedEdgeInit (&l, bpp, t, &trap->left, x_off, y_off); - RenderLineFixedEdgeInit (&r, bpp, t, &trap->right, x_off, y_off); - - fbRasterizeEdges (buf, bpp, width, stride, &l, &r, t, b); - } -} - -static int -_GreaterY (xPointFixed *a, xPointFixed *b) -{ - if (a->y == b->y) - return a->x > b->x; - return a->y > b->y; -} - -/* - * Note that the definition of this function is a bit odd because - * of the X coordinate space (y increasing downwards). - */ -static int -_Clockwise (xPointFixed *ref, xPointFixed *a, xPointFixed *b) -{ - xPointFixed ad, bd; - - ad.x = a->x - ref->x; - ad.y = a->y - ref->y; - bd.x = b->x - ref->x; - bd.y = b->y - ref->y; - - return ((xFixed_32_32) bd.y * ad.x - (xFixed_32_32) ad.y * bd.x) < 0; -} - -/* FIXME -- this could be made more efficient */ -void -fbAddTriangles (PicturePtr pPicture, - INT16 x_off, - INT16 y_off, - int ntri, - xTriangle *tris) -{ - xPointFixed *top, *left, *right, *tmp; - xTrapezoid trap; - - for (; ntri; ntri--, tris++) - { - top = &tris->p1; - left = &tris->p2; - right = &tris->p3; - if (_GreaterY (top, left)) { - tmp = left; left = top; top = tmp; - } - if (_GreaterY (top, right)) { - tmp = right; right = top; top = tmp; - } - if (_Clockwise (top, right, left)) { - tmp = right; right = left; left = tmp; - } - - /* - * Two cases: - * - * + + - * / \ / \ - * / \ / \ - * / + + \ - * / -- -- \ - * / -- -- \ - * / --- --- \ - * +-- --+ - */ - - trap.top = top->y; - trap.left.p1 = *top; - trap.left.p2 = *left; - trap.right.p1 = *top; - trap.right.p2 = *right; - if (right->y < left->y) - trap.bottom = right->y; - else - trap.bottom = left->y; - fbRasterizeTrapezoid (pPicture, &trap, x_off, y_off); - if (right->y < left->y) - { - trap.top = right->y; - trap.bottom = left->y; - trap.right.p1 = *right; - trap.right.p2 = *left; - } - else - { - trap.top = left->y; - trap.bottom = right->y; - trap.left.p1 = *left; - trap.left.p2 = *right; - } - fbRasterizeTrapezoid (pPicture, &trap, x_off, y_off); - } -} - -#endif /* RENDER */ |