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authorReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
committerReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
commitf4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch)
tree2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/programs/Xserver/miext/rootless/accel/rlAccel.c
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
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Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
Diffstat (limited to 'nx-X11/programs/Xserver/miext/rootless/accel/rlAccel.c')
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diff --git a/nx-X11/programs/Xserver/miext/rootless/accel/rlAccel.c b/nx-X11/programs/Xserver/miext/rootless/accel/rlAccel.c
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+/*
+ * Support for accelerated rootless code
+ */
+/*
+ * Copyright (c) 2004 Torrey T. Lyons. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name(s) of the above copyright
+ * holders shall not be used in advertising or otherwise to promote the sale,
+ * use or other dealings in this Software without prior written authorization.
+ */
+/* $XdotOrg: xc/programs/Xserver/miext/rootless/accel/rlAccel.c,v 1.5 2005/07/03 07:02:03 daniels Exp $ */
+
+/*
+ * The accelerated rootless code replaces some GC operations from fb with
+ * versions that call the rootless acceleration functions where appropriate.
+ * To work properly, this must be wrapped directly on top of fb. Nothing
+ * underneath this layer besides fb will get called.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "rootless.h"
+#include "rlAccel.h"
+
+typedef struct _rlAccelScreenRec {
+ CreateGCProcPtr CreateGC;
+ CloseScreenProcPtr CloseScreen;
+} rlAccelScreenRec, *rlAccelScreenPtr;
+
+static int rlAccelScreenPrivateIndex = -1;
+
+#define RLACCELREC(pScreen) \
+ ((rlAccelScreenRec *)(pScreen)->devPrivates[rlAccelScreenPrivateIndex].ptr)
+
+/* This is mostly identical to fbGCOps. */
+static GCOps rlAccelOps = {
+ rlFillSpans,
+ fbSetSpans,
+ fbPutImage,
+ rlCopyArea,
+ fbCopyPlane,
+ fbPolyPoint,
+ fbPolyLine,
+ fbPolySegment,
+ fbPolyRectangle,
+ fbPolyArc,
+ miFillPolygon,
+ rlPolyFillRect,
+ fbPolyFillArc,
+ miPolyText8,
+ miPolyText16,
+ miImageText8,
+ miImageText16,
+ rlImageGlyphBlt,
+ fbPolyGlyphBlt,
+ fbPushPixels
+#ifdef NEED_LINEHELPER
+ ,NULL
+#endif
+};
+
+
+/*
+ * Screen function to create a graphics context
+ */
+static Bool
+rlCreateGC(GCPtr pGC)
+{
+ ScreenPtr pScreen = pGC->pScreen;
+ rlAccelScreenRec *s = RLACCELREC(pScreen);
+ Bool result;
+
+ // Unwrap and call
+ pScreen->CreateGC = s->CreateGC;
+ result = s->CreateGC(pGC);
+
+ // Accelerated GC ops replace some fb GC ops
+ pGC->ops = &rlAccelOps;
+
+ // Rewrap
+ s->CreateGC = pScreen->CreateGC;
+ pScreen->CreateGC = rlCreateGC;
+
+ return result;
+}
+
+
+/*
+ * Clean up when closing a screen on server reset
+ */
+static Bool
+rlCloseScreen (int iScreen, ScreenPtr pScreen)
+{
+ rlAccelScreenRec *s = RLACCELREC(pScreen);
+ Bool result;
+
+ // Unwrap
+ pScreen->CloseScreen = s->CloseScreen;
+ result = pScreen->CloseScreen(iScreen, pScreen);
+
+ xfree(s);
+
+ return result;
+}
+
+
+/*
+ * RootlessAccelInit
+ * Called by the rootless implementation to initialize accelerated
+ * rootless drawing.
+ */
+Bool
+RootlessAccelInit(ScreenPtr pScreen)
+{
+ static unsigned long rlAccelGeneration = 0;
+ rlAccelScreenRec *s;
+
+ if (rlAccelGeneration != serverGeneration) {
+ rlAccelScreenPrivateIndex = AllocateScreenPrivateIndex();
+ if (rlAccelScreenPrivateIndex == -1) return FALSE;
+ rlAccelGeneration = serverGeneration;
+ }
+
+ s = xalloc(sizeof(rlAccelScreenRec));
+ if (!s) return FALSE;
+ RLACCELREC(pScreen) = s;
+
+ // Wrap the screen functions we need
+ s->CreateGC = pScreen->CreateGC;
+ pScreen->CreateGC = rlCreateGC;
+ s->CloseScreen = pScreen->CloseScreen;
+ pScreen->CloseScreen = rlCloseScreen;
+
+ return TRUE;
+}