diff options
Diffstat (limited to 'xorg-server/render/mitrap.c')
| -rw-r--r-- | xorg-server/render/mitrap.c | 158 |
1 files changed, 79 insertions, 79 deletions
diff --git a/xorg-server/render/mitrap.c b/xorg-server/render/mitrap.c index 445f23630..37d917451 100644 --- a/xorg-server/render/mitrap.c +++ b/xorg-server/render/mitrap.c @@ -1,79 +1,79 @@ -/* - * - * Copyright © 2002 Keith Packard, member of The XFree86 Project, Inc. - * - * 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 "scrnintstr.h" -#include "gcstruct.h" -#include "pixmapstr.h" -#include "windowstr.h" -#include "servermd.h" -#include "mi.h" -#include "picturestr.h" -#include "mipict.h" - -static xFixed -miLineFixedX (xLineFixed *l, xFixed y, Bool ceil) -{ - xFixed dx = l->p2.x - l->p1.x; - xFixed_32_32 ex = (xFixed_32_32) (y - l->p1.y) * dx; - xFixed dy = l->p2.y - l->p1.y; - if (ceil) - ex += (dy - 1); - return l->p1.x + (xFixed) (ex / dy); -} - -void -miTrapezoidBounds (int ntrap, xTrapezoid *traps, BoxPtr box) -{ - box->y1 = MAXSHORT; - box->y2 = MINSHORT; - box->x1 = MAXSHORT; - box->x2 = MINSHORT; - for (; ntrap; ntrap--, traps++) - { - INT16 x1, y1, x2, y2; - - if (!xTrapezoidValid(traps)) - continue; - y1 = xFixedToInt (traps->top); - if (y1 < box->y1) - box->y1 = y1; - - y2 = xFixedToInt (xFixedCeil (traps->bottom)); - if (y2 > box->y2) - box->y2 = y2; - - x1 = xFixedToInt (min (miLineFixedX (&traps->left, traps->top, FALSE), - miLineFixedX (&traps->left, traps->bottom, FALSE))); - if (x1 < box->x1) - box->x1 = x1; - - x2 = xFixedToInt (xFixedCeil (max (miLineFixedX (&traps->right, traps->top, TRUE), - miLineFixedX (&traps->right, traps->bottom, TRUE)))); - if (x2 > box->x2) - box->x2 = x2; - } -} +/*
+ *
+ * Copyright © 2002 Keith Packard, member of The XFree86 Project, Inc.
+ *
+ * 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 "scrnintstr.h"
+#include "gcstruct.h"
+#include "pixmapstr.h"
+#include "windowstr.h"
+#include "servermd.h"
+#include "mi.h"
+#include "picturestr.h"
+#include "mipict.h"
+
+static xFixed
+miLineFixedX (xLineFixed *l, xFixed y, Bool ceil)
+{
+ xFixed dx = l->p2.x - l->p1.x;
+ xFixed_32_32 ex = (xFixed_32_32) (y - l->p1.y) * dx;
+ xFixed dy = l->p2.y - l->p1.y;
+ if (ceil)
+ ex += (dy - 1);
+ return l->p1.x + (xFixed) (ex / dy);
+}
+
+void
+miTrapezoidBounds (int ntrap, xTrapezoid *traps, BoxPtr box)
+{
+ box->y1 = MAXSHORT;
+ box->y2 = MINSHORT;
+ box->x1 = MAXSHORT;
+ box->x2 = MINSHORT;
+ for (; ntrap; ntrap--, traps++)
+ {
+ INT16 x1, y1, x2, y2;
+
+ if (!xTrapezoidValid(traps))
+ continue;
+ y1 = xFixedToInt (traps->top);
+ if (y1 < box->y1)
+ box->y1 = y1;
+
+ y2 = xFixedToInt (xFixedCeil (traps->bottom));
+ if (y2 > box->y2)
+ box->y2 = y2;
+
+ x1 = xFixedToInt (min (miLineFixedX (&traps->left, traps->top, FALSE),
+ miLineFixedX (&traps->left, traps->bottom, FALSE)));
+ if (x1 < box->x1)
+ box->x1 = x1;
+
+ x2 = xFixedToInt (xFixedCeil (max (miLineFixedX (&traps->right, traps->top, TRUE),
+ miLineFixedX (&traps->right, traps->bottom, TRUE))));
+ if (x2 > box->x2)
+ box->x2 = x2;
+ }
+}
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