1 files changed, 74 insertions, 0 deletions
diff --git a/libXrender/src/Trap.c b/libXrender/src/Trap.c
new file mode 100644
index 000000000..919aaef53
--- /dev/null
+++ b/libXrender/src/Trap.c
@@ -0,0 +1,74 @@
+/*
+ *
+ * Copyright © 2002 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_CONFIG_H
+#include <config.h>
+#endif
+#include "Xrenderint.h"
+
+void
+XRenderCompositeTrapezoids (Display		*dpy,
+			    int			op,
+			    Picture		src,
+			    Picture		dst,
+			    _Xconst XRenderPictFormat	*maskFormat,
+			    int			xSrc,
+			    int			ySrc,
+			    _Xconst XTrapezoid	*traps,
+			    int			ntrap)
+{
+    XRenderExtDisplayInfo         *info = XRenderFindDisplay (dpy);
+    xRenderTrapezoidsReq    *req;
+    int			    n;
+    long    		    len;
+    unsigned long	    max_req = dpy->bigreq_size ? dpy->bigreq_size : dpy->max_request_size;
+
+    RenderSimpleCheckExtension (dpy, info);
+    LockDisplay(dpy);
+    while (ntrap)
+    {
+	GetReq(RenderTrapezoids, req);
+	req->reqType = info->codes->major_opcode;
+	req->renderReqType = X_RenderTrapezoids;
+	req->op = (CARD8) op;
+	req->src = src;
+	req->dst = dst;
+	req->maskFormat = maskFormat ? maskFormat->id : 0;
+	req->xSrc = xSrc;
+	req->ySrc = ySrc;
+	n = ntrap;
+	len = ((long) n) * (SIZEOF (xTrapezoid) >> 2);
+	if (len > (max_req - req->length)) {
+	    n = (max_req - req->length) / (SIZEOF (xTrapezoid) >> 2);
+	    len = ((long)n) * (SIZEOF (xTrapezoid) >> 2);
+	}
+	SetReqLen (req, len, len);
+	len <<= 2;
+	DataInt32 (dpy, (int *) traps, len);
+	ntrap -= n;
+	traps += n;
+    }
+    UnlockDisplay(dpy);
+    SyncHandle();
+}
+