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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /xorg-server/fb/fbarc.c
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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
Diffstat (limited to 'xorg-server/fb/fbarc.c')
-rw-r--r--xorg-server/fb/fbarc.c147
1 files changed, 147 insertions, 0 deletions
diff --git a/xorg-server/fb/fbarc.c b/xorg-server/fb/fbarc.c
new file mode 100644
index 000000000..f89b81c52
--- /dev/null
+++ b/xorg-server/fb/fbarc.c
@@ -0,0 +1,147 @@
+/*
+ * Copyright © 1998 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"
+#include "mizerarc.h"
+#include <limits.h>
+
+typedef void (*FbArc) (FbBits *dst,
+ FbStride dstStride,
+ int dstBpp,
+ xArc *arc,
+ int dx,
+ int dy,
+ FbBits and,
+ FbBits xor);
+
+void
+fbPolyArc (DrawablePtr pDrawable,
+ GCPtr pGC,
+ int narcs,
+ xArc *parcs)
+{
+ FbArc arc;
+
+ if (pGC->lineWidth == 0)
+ {
+#ifndef FBNOPIXADDR
+ arc = 0;
+ if (pGC->lineStyle == LineSolid && pGC->fillStyle == FillSolid)
+ {
+ switch (pDrawable->bitsPerPixel)
+ {
+ case 8: arc = fbArc8; break;
+ case 16: arc = fbArc16; break;
+#ifdef FB_24BIT
+ case 24: arc = fbArc24; break;
+#endif
+ case 32: arc = fbArc32; break;
+ }
+ }
+ if (arc)
+ {
+ FbGCPrivPtr pPriv = fbGetGCPrivate (pGC);
+ FbBits *dst;
+ FbStride dstStride;
+ int dstBpp;
+ int dstXoff, dstYoff;
+ BoxRec box;
+ int x2, y2;
+ RegionPtr cclip;
+ int wrapped = 0;
+
+ cclip = fbGetCompositeClip (pGC);
+ fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
+#ifdef FB_ACCESS_WRAPPER
+ wrapped = 1;
+#endif
+ while (narcs--)
+ {
+ if (miCanZeroArc (parcs))
+ {
+ box.x1 = parcs->x + pDrawable->x;
+ box.y1 = parcs->y + pDrawable->y;
+ /*
+ * Because box.x2 and box.y2 get truncated to 16 bits, and the
+ * RECT_IN_REGION test treats the resulting number as a signed
+ * integer, the RECT_IN_REGION test alone can go the wrong way.
+ * This can result in a server crash because the rendering
+ * routines in this file deal directly with cpu addresses
+ * of pixels to be stored, and do not clip or otherwise check
+ * that all such addresses are within their respective pixmaps.
+ * So we only allow the RECT_IN_REGION test to be used for
+ * values that can be expressed correctly in a signed short.
+ */
+ x2 = box.x1 + (int)parcs->width + 1;
+ box.x2 = x2;
+ y2 = box.y1 + (int)parcs->height + 1;
+ box.y2 = y2;
+ if ( (x2 <= SHRT_MAX) && (y2 <= SHRT_MAX) &&
+ (RECT_IN_REGION(pDrawable->pScreen, cclip, &box) == rgnIN) ) {
+#ifdef FB_ACCESS_WRAPPER
+ if (!wrapped) {
+ fbPrepareAccess (pDrawable);
+ wrapped = 1;
+ }
+#endif
+ (*arc) (dst, dstStride, dstBpp,
+ parcs, pDrawable->x + dstXoff, pDrawable->y + dstYoff,
+ pPriv->and, pPriv->xor);
+ } else {
+#ifdef FB_ACCESS_WRAPPER
+ if (wrapped) {
+ fbFinishAccess (pDrawable);
+ wrapped = 0;
+ }
+#endif
+ miZeroPolyArc(pDrawable, pGC, 1, parcs);
+ }
+ }
+ else {
+#ifdef FB_ACCESS_WRAPPER
+ if (wrapped) {
+ fbFinishAccess (pDrawable);
+ wrapped = 0;
+ }
+#endif
+ miPolyArc(pDrawable, pGC, 1, parcs);
+ }
+ parcs++;
+ }
+#ifdef FB_ACCESS_WRAPPER
+ if (wrapped) {
+ fbFinishAccess (pDrawable);
+ wrapped = 0;
+ }
+#endif
+ }
+ else
+#endif
+ miZeroPolyArc (pDrawable, pGC, narcs, parcs);
+ }
+ else
+ miPolyArc (pDrawable, pGC, narcs, parcs);
+}