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-rw-r--r--nx-X11/programs/Xserver/fb/fbtrap.c3
-rw-r--r--nx-X11/programs/Xserver/fb/fbtrap.c.NX.original242
-rw-r--r--nx-X11/programs/Xserver/fb/fbtrap.c.X.original239
-rw-r--r--nx-X11/programs/Xserver/os/utils.c13
-rw-r--r--nx-X11/programs/Xserver/os/utils.c.NX.original13
-rw-r--r--nx-X11/programs/Xserver/render/renderedge.c1
-rw-r--r--nx-X11/programs/Xserver/render/renderedge.c.NX.original202
-rw-r--r--nx-X11/programs/Xserver/render/renderedge.c.X.original201
8 files changed, 914 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/fb/fbtrap.c b/nx-X11/programs/Xserver/fb/fbtrap.c
index 39483d8cd..1940bc209 100644
--- a/nx-X11/programs/Xserver/fb/fbtrap.c
+++ b/nx-X11/programs/Xserver/fb/fbtrap.c
@@ -115,6 +115,9 @@ fbRasterizeTrapezoid (PicturePtr pPicture,
RenderEdge l, r;
xFixed t, b;
+ if (!xTrapezoidValid (trap))
+ return;
+
fbGetDrawable (pPicture->pDrawable, buf, stride, bpp, pxoff, pyoff);
width = pPicture->pDrawable->width;
diff --git a/nx-X11/programs/Xserver/fb/fbtrap.c.NX.original b/nx-X11/programs/Xserver/fb/fbtrap.c.NX.original
new file mode 100644
index 000000000..1940bc209
--- /dev/null
+++ b/nx-X11/programs/Xserver/fb/fbtrap.c.NX.original
@@ -0,0 +1,242 @@
+/*
+ * $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 */
diff --git a/nx-X11/programs/Xserver/fb/fbtrap.c.X.original b/nx-X11/programs/Xserver/fb/fbtrap.c.X.original
new file mode 100644
index 000000000..39483d8cd
--- /dev/null
+++ b/nx-X11/programs/Xserver/fb/fbtrap.c.X.original
@@ -0,0 +1,239 @@
+/*
+ * $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;
+
+ 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 */
diff --git a/nx-X11/programs/Xserver/os/utils.c b/nx-X11/programs/Xserver/os/utils.c
index c806621ff..104ff86c6 100644
--- a/nx-X11/programs/Xserver/os/utils.c
+++ b/nx-X11/programs/Xserver/os/utils.c
@@ -1847,12 +1847,19 @@ Popen(char *command, char *type)
if (OsVendorStartRedirectErrorFProc != NULL) {
OsVendorStartRedirectErrorFProc();
}
+ OsBlockSignals ();
#endif
switch (pid = fork()) {
case -1: /* error */
close(pdes[0]);
close(pdes[1]);
xfree(cur);
+#ifdef NX_TRANS_EXIT
+ if (OsVendorEndRedirectErrorFProc != NULL) {
+ OsVendorEndRedirectErrorFProc();
+ }
+ OsReleaseSignals ();
+#endif
return NULL;
case 0: /* child */
if (setgid(getgid()) == -1)
@@ -1917,12 +1924,18 @@ Popen(char *command, char *type)
#endif
+ #ifdef NX_TRANS_EXIT
+ OsReleaseSignals ();
+ #endif
+
execl("/bin/sh", "sh", "-c", command, (char *)NULL);
_exit(127);
}
+#ifndef NX_TRANS_EXIT
/* Avoid EINTR during stdio calls */
OsBlockSignals ();
+#endif
/* parent */
if (*type == 'r') {
diff --git a/nx-X11/programs/Xserver/os/utils.c.NX.original b/nx-X11/programs/Xserver/os/utils.c.NX.original
index c806621ff..104ff86c6 100644
--- a/nx-X11/programs/Xserver/os/utils.c.NX.original
+++ b/nx-X11/programs/Xserver/os/utils.c.NX.original
@@ -1847,12 +1847,19 @@ Popen(char *command, char *type)
if (OsVendorStartRedirectErrorFProc != NULL) {
OsVendorStartRedirectErrorFProc();
}
+ OsBlockSignals ();
#endif
switch (pid = fork()) {
case -1: /* error */
close(pdes[0]);
close(pdes[1]);
xfree(cur);
+#ifdef NX_TRANS_EXIT
+ if (OsVendorEndRedirectErrorFProc != NULL) {
+ OsVendorEndRedirectErrorFProc();
+ }
+ OsReleaseSignals ();
+#endif
return NULL;
case 0: /* child */
if (setgid(getgid()) == -1)
@@ -1917,12 +1924,18 @@ Popen(char *command, char *type)
#endif
+ #ifdef NX_TRANS_EXIT
+ OsReleaseSignals ();
+ #endif
+
execl("/bin/sh", "sh", "-c", command, (char *)NULL);
_exit(127);
}
+#ifndef NX_TRANS_EXIT
/* Avoid EINTR during stdio calls */
OsBlockSignals ();
+#endif
/* parent */
if (*type == 'r') {
diff --git a/nx-X11/programs/Xserver/render/renderedge.c b/nx-X11/programs/Xserver/render/renderedge.c
index b4031944d..f095038e5 100644
--- a/nx-X11/programs/Xserver/render/renderedge.c
+++ b/nx-X11/programs/Xserver/render/renderedge.c
@@ -143,6 +143,7 @@ RenderEdgeInit (RenderEdge *e,
dx = x_bot - x_top;
dy = y_bot - y_top;
e->dy = dy;
+ e->dx = 0;
if (dy)
{
if (dx >= 0)
diff --git a/nx-X11/programs/Xserver/render/renderedge.c.NX.original b/nx-X11/programs/Xserver/render/renderedge.c.NX.original
new file mode 100644
index 000000000..f095038e5
--- /dev/null
+++ b/nx-X11/programs/Xserver/render/renderedge.c.NX.original
@@ -0,0 +1,202 @@
+/*
+ * $Id: renderedge.c,v 1.4 2005/07/03 07:02:08 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 "renderedge.h"
+
+/*
+ * Compute the smallest value no less than y which is on a
+ * grid row
+ */
+
+xFixed
+RenderSampleCeilY (xFixed y, int n)
+{
+ xFixed f = xFixedFrac(y);
+ xFixed i = xFixedFloor(y);
+
+ f = ((f + Y_FRAC_FIRST(n)) / STEP_Y_SMALL(n)) * STEP_Y_SMALL(n) + Y_FRAC_FIRST(n);
+ if (f > Y_FRAC_LAST(n))
+ {
+ f = Y_FRAC_FIRST(n);
+ i += xFixed1;
+ }
+ return (i | f);
+}
+
+#define _div(a,b) ((a) >= 0 ? (a) / (b) : -((-(a) + (b) - 1) / (b)))
+
+/*
+ * Compute the largest value no greater than y which is on a
+ * grid row
+ */
+xFixed
+RenderSampleFloorY (xFixed y, int n)
+{
+ xFixed f = xFixedFrac(y);
+ xFixed i = xFixedFloor (y);
+
+ f = _div(f - Y_FRAC_FIRST(n), STEP_Y_SMALL(n)) * STEP_Y_SMALL(n) + Y_FRAC_FIRST(n);
+ if (f < Y_FRAC_FIRST(n))
+ {
+ f = Y_FRAC_LAST(n);
+ i -= xFixed1;
+ }
+ return (i | f);
+}
+
+/*
+ * Step an edge by any amount (including negative values)
+ */
+void
+RenderEdgeStep (RenderEdge *e, int n)
+{
+ xFixed_48_16 ne;
+
+ e->x += n * e->stepx;
+
+ ne = e->e + n * (xFixed_48_16) e->dx;
+
+ if (n >= 0)
+ {
+ if (ne > 0)
+ {
+ int nx = (ne + e->dy - 1) / e->dy;
+ e->e = ne - nx * (xFixed_48_16) e->dy;
+ e->x += nx * e->signdx;
+ }
+ }
+ else
+ {
+ if (ne <= -e->dy)
+ {
+ int nx = (-ne) / e->dy;
+ e->e = ne + nx * (xFixed_48_16) e->dy;
+ e->x -= nx * e->signdx;
+ }
+ }
+}
+
+/*
+ * A private routine to initialize the multi-step
+ * elements of an edge structure
+ */
+static void
+_RenderEdgeMultiInit (RenderEdge *e, int n, xFixed *stepx_p, xFixed *dx_p)
+{
+ xFixed stepx;
+ xFixed_48_16 ne;
+
+ ne = n * (xFixed_48_16) e->dx;
+ stepx = n * e->stepx;
+ if (ne > 0)
+ {
+ int nx = ne / e->dy;
+ ne -= nx * e->dy;
+ stepx += nx * e->signdx;
+ }
+ *dx_p = ne;
+ *stepx_p = stepx;
+}
+
+/*
+ * Initialize one edge structure given the line endpoints and a
+ * starting y value
+ */
+void
+RenderEdgeInit (RenderEdge *e,
+ int n,
+ xFixed y_start,
+ xFixed x_top,
+ xFixed y_top,
+ xFixed x_bot,
+ xFixed y_bot)
+{
+ xFixed dx, dy;
+
+ e->x = x_top;
+ e->e = 0;
+ dx = x_bot - x_top;
+ dy = y_bot - y_top;
+ e->dy = dy;
+ e->dx = 0;
+ if (dy)
+ {
+ if (dx >= 0)
+ {
+ e->signdx = 1;
+ e->stepx = dx / dy;
+ e->dx = dx % dy;
+ e->e = -dy;
+ }
+ else
+ {
+ e->signdx = -1;
+ e->stepx = -(-dx / dy);
+ e->dx = -dx % dy;
+ e->e = 0;
+ }
+
+ _RenderEdgeMultiInit (e, STEP_Y_SMALL(n), &e->stepx_small, &e->dx_small);
+ _RenderEdgeMultiInit (e, STEP_Y_BIG(n), &e->stepx_big, &e->dx_big);
+ }
+ RenderEdgeStep (e, y_start - y_top);
+}
+
+/*
+ * Initialize one edge structure given a line, starting y value
+ * and a pixel offset for the line
+ */
+void
+RenderLineFixedEdgeInit (RenderEdge *e,
+ int n,
+ xFixed y,
+ xLineFixed *line,
+ int x_off,
+ int y_off)
+{
+ xFixed x_off_fixed = IntToxFixed(x_off);
+ xFixed y_off_fixed = IntToxFixed(y_off);
+ xPointFixed *top, *bot;
+
+ if (line->p1.y <= line->p2.y)
+ {
+ top = &line->p1;
+ bot = &line->p2;
+ }
+ else
+ {
+ top = &line->p2;
+ bot = &line->p1;
+ }
+ RenderEdgeInit (e, n, y,
+ top->x + x_off_fixed,
+ top->y + y_off_fixed,
+ bot->x + x_off_fixed,
+ bot->y + y_off_fixed);
+}
+
diff --git a/nx-X11/programs/Xserver/render/renderedge.c.X.original b/nx-X11/programs/Xserver/render/renderedge.c.X.original
new file mode 100644
index 000000000..b4031944d
--- /dev/null
+++ b/nx-X11/programs/Xserver/render/renderedge.c.X.original
@@ -0,0 +1,201 @@
+/*
+ * $Id: renderedge.c,v 1.4 2005/07/03 07:02:08 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 "renderedge.h"
+
+/*
+ * Compute the smallest value no less than y which is on a
+ * grid row
+ */
+
+xFixed
+RenderSampleCeilY (xFixed y, int n)
+{
+ xFixed f = xFixedFrac(y);
+ xFixed i = xFixedFloor(y);
+
+ f = ((f + Y_FRAC_FIRST(n)) / STEP_Y_SMALL(n)) * STEP_Y_SMALL(n) + Y_FRAC_FIRST(n);
+ if (f > Y_FRAC_LAST(n))
+ {
+ f = Y_FRAC_FIRST(n);
+ i += xFixed1;
+ }
+ return (i | f);
+}
+
+#define _div(a,b) ((a) >= 0 ? (a) / (b) : -((-(a) + (b) - 1) / (b)))
+
+/*
+ * Compute the largest value no greater than y which is on a
+ * grid row
+ */
+xFixed
+RenderSampleFloorY (xFixed y, int n)
+{
+ xFixed f = xFixedFrac(y);
+ xFixed i = xFixedFloor (y);
+
+ f = _div(f - Y_FRAC_FIRST(n), STEP_Y_SMALL(n)) * STEP_Y_SMALL(n) + Y_FRAC_FIRST(n);
+ if (f < Y_FRAC_FIRST(n))
+ {
+ f = Y_FRAC_LAST(n);
+ i -= xFixed1;
+ }
+ return (i | f);
+}
+
+/*
+ * Step an edge by any amount (including negative values)
+ */
+void
+RenderEdgeStep (RenderEdge *e, int n)
+{
+ xFixed_48_16 ne;
+
+ e->x += n * e->stepx;
+
+ ne = e->e + n * (xFixed_48_16) e->dx;
+
+ if (n >= 0)
+ {
+ if (ne > 0)
+ {
+ int nx = (ne + e->dy - 1) / e->dy;
+ e->e = ne - nx * (xFixed_48_16) e->dy;
+ e->x += nx * e->signdx;
+ }
+ }
+ else
+ {
+ if (ne <= -e->dy)
+ {
+ int nx = (-ne) / e->dy;
+ e->e = ne + nx * (xFixed_48_16) e->dy;
+ e->x -= nx * e->signdx;
+ }
+ }
+}
+
+/*
+ * A private routine to initialize the multi-step
+ * elements of an edge structure
+ */
+static void
+_RenderEdgeMultiInit (RenderEdge *e, int n, xFixed *stepx_p, xFixed *dx_p)
+{
+ xFixed stepx;
+ xFixed_48_16 ne;
+
+ ne = n * (xFixed_48_16) e->dx;
+ stepx = n * e->stepx;
+ if (ne > 0)
+ {
+ int nx = ne / e->dy;
+ ne -= nx * e->dy;
+ stepx += nx * e->signdx;
+ }
+ *dx_p = ne;
+ *stepx_p = stepx;
+}
+
+/*
+ * Initialize one edge structure given the line endpoints and a
+ * starting y value
+ */
+void
+RenderEdgeInit (RenderEdge *e,
+ int n,
+ xFixed y_start,
+ xFixed x_top,
+ xFixed y_top,
+ xFixed x_bot,
+ xFixed y_bot)
+{
+ xFixed dx, dy;
+
+ e->x = x_top;
+ e->e = 0;
+ dx = x_bot - x_top;
+ dy = y_bot - y_top;
+ e->dy = dy;
+ if (dy)
+ {
+ if (dx >= 0)
+ {
+ e->signdx = 1;
+ e->stepx = dx / dy;
+ e->dx = dx % dy;
+ e->e = -dy;
+ }
+ else
+ {
+ e->signdx = -1;
+ e->stepx = -(-dx / dy);
+ e->dx = -dx % dy;
+ e->e = 0;
+ }
+
+ _RenderEdgeMultiInit (e, STEP_Y_SMALL(n), &e->stepx_small, &e->dx_small);
+ _RenderEdgeMultiInit (e, STEP_Y_BIG(n), &e->stepx_big, &e->dx_big);
+ }
+ RenderEdgeStep (e, y_start - y_top);
+}
+
+/*
+ * Initialize one edge structure given a line, starting y value
+ * and a pixel offset for the line
+ */
+void
+RenderLineFixedEdgeInit (RenderEdge *e,
+ int n,
+ xFixed y,
+ xLineFixed *line,
+ int x_off,
+ int y_off)
+{
+ xFixed x_off_fixed = IntToxFixed(x_off);
+ xFixed y_off_fixed = IntToxFixed(y_off);
+ xPointFixed *top, *bot;
+
+ if (line->p1.y <= line->p2.y)
+ {
+ top = &line->p1;
+ bot = &line->p2;
+ }
+ else
+ {
+ top = &line->p2;
+ bot = &line->p1;
+ }
+ RenderEdgeInit (e, n, y,
+ top->x + x_off_fixed,
+ top->y + y_off_fixed,
+ bot->x + x_off_fixed,
+ bot->y + y_off_fixed);
+}
+
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