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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/randr/randrstr.h
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Diffstat (limited to 'xorg-server/randr/randrstr.h')
-rw-r--r--xorg-server/randr/randrstr.h852
1 files changed, 852 insertions, 0 deletions
diff --git a/xorg-server/randr/randrstr.h b/xorg-server/randr/randrstr.h
new file mode 100644
index 000000000..e8358bc0c
--- /dev/null
+++ b/xorg-server/randr/randrstr.h
@@ -0,0 +1,852 @@
+/*
+ * Copyright © 2000 Compaq Computer Corporation
+ * Copyright © 2002 Hewlett-Packard Company
+ * Copyright © 2006 Intel Corporation
+ *
+ * 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 the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS 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.
+ *
+ * Author: Jim Gettys, Hewlett-Packard Company, Inc.
+ * Keith Packard, Intel Corporation
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#ifndef _RANDRSTR_H_
+#define _RANDRSTR_H_
+
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include "misc.h"
+#include "os.h"
+#include "dixstruct.h"
+#include "resource.h"
+#include "scrnintstr.h"
+#include "windowstr.h"
+#include "pixmapstr.h"
+#include "extnsionst.h"
+#include "servermd.h"
+#include <X11/extensions/randr.h>
+#include <X11/extensions/randrproto.h>
+#ifdef RENDER
+#include <X11/extensions/render.h> /* we share subpixel order information */
+#include "picturestr.h"
+#endif
+#include <X11/Xfuncproto.h>
+
+/* required for ABI compatibility for now */
+#define RANDR_10_INTERFACE 1
+#define RANDR_12_INTERFACE 1
+
+typedef XID RRMode;
+typedef XID RROutput;
+typedef XID RRCrtc;
+
+extern int RREventBase, RRErrorBase;
+
+extern int (*ProcRandrVector[RRNumberRequests])(ClientPtr);
+extern int (*SProcRandrVector[RRNumberRequests])(ClientPtr);
+
+/*
+ * Modeline for a monitor. Name follows directly after this struct
+ */
+
+#define RRModeName(pMode) ((char *) (pMode + 1))
+typedef struct _rrMode RRModeRec, *RRModePtr;
+typedef struct _rrPropertyValue RRPropertyValueRec, *RRPropertyValuePtr;
+typedef struct _rrProperty RRPropertyRec, *RRPropertyPtr;
+typedef struct _rrCrtc RRCrtcRec, *RRCrtcPtr;
+typedef struct _rrOutput RROutputRec, *RROutputPtr;
+
+struct _rrMode {
+ int refcnt;
+ xRRModeInfo mode;
+ char *name;
+ ScreenPtr userScreen;
+};
+
+struct _rrPropertyValue {
+ Atom type; /* ignored by server */
+ short format; /* format of data for swapping - 8,16,32 */
+ long size; /* size of data in (format/8) bytes */
+ pointer data; /* private to client */
+};
+
+struct _rrProperty {
+ RRPropertyPtr next;
+ ATOM propertyName;
+ Bool is_pending;
+ Bool range;
+ Bool immutable;
+ int num_valid;
+ INT32 *valid_values;
+ RRPropertyValueRec current, pending;
+};
+
+struct _rrCrtc {
+ RRCrtc id;
+ ScreenPtr pScreen;
+ RRModePtr mode;
+ int x, y;
+ Rotation rotation;
+ Rotation rotations;
+ Bool changed;
+ int numOutputs;
+ RROutputPtr *outputs;
+ int gammaSize;
+ CARD16 *gammaRed;
+ CARD16 *gammaBlue;
+ CARD16 *gammaGreen;
+ void *devPrivate;
+};
+
+struct _rrOutput {
+ RROutput id;
+ ScreenPtr pScreen;
+ char *name;
+ int nameLength;
+ CARD8 connection;
+ CARD8 subpixelOrder;
+ int mmWidth;
+ int mmHeight;
+ RRCrtcPtr crtc;
+ int numCrtcs;
+ RRCrtcPtr *crtcs;
+ int numClones;
+ RROutputPtr *clones;
+ int numModes;
+ int numPreferred;
+ RRModePtr *modes;
+ int numUserModes;
+ RRModePtr *userModes;
+ Bool changed;
+ RRPropertyPtr properties;
+ Bool pendingProperties;
+ void *devPrivate;
+};
+
+#if RANDR_12_INTERFACE
+typedef Bool (*RRScreenSetSizeProcPtr) (ScreenPtr pScreen,
+ CARD16 width,
+ CARD16 height,
+ CARD32 mmWidth,
+ CARD32 mmHeight);
+
+typedef Bool (*RRCrtcSetProcPtr) (ScreenPtr pScreen,
+ RRCrtcPtr crtc,
+ RRModePtr mode,
+ int x,
+ int y,
+ Rotation rotation,
+ int numOutputs,
+ RROutputPtr *outputs);
+
+typedef Bool (*RRCrtcSetGammaProcPtr) (ScreenPtr pScreen,
+ RRCrtcPtr crtc);
+
+typedef Bool (*RROutputSetPropertyProcPtr) (ScreenPtr pScreen,
+ RROutputPtr output,
+ Atom property,
+ RRPropertyValuePtr value);
+
+typedef Bool (*RROutputValidateModeProcPtr) (ScreenPtr pScreen,
+ RROutputPtr output,
+ RRModePtr mode);
+
+typedef void (*RRModeDestroyProcPtr) (ScreenPtr pScreen,
+ RRModePtr mode);
+
+#endif
+
+typedef Bool (*RRGetInfoProcPtr) (ScreenPtr pScreen, Rotation *rotations);
+typedef Bool (*RRCloseScreenProcPtr) ( int i, ScreenPtr pscreen);
+
+/* These are for 1.0 compatibility */
+
+typedef struct _rrRefresh {
+ CARD16 rate;
+ RRModePtr mode;
+} RRScreenRate, *RRScreenRatePtr;
+
+typedef struct _rrScreenSize {
+ int id;
+ short width, height;
+ short mmWidth, mmHeight;
+ int nRates;
+ RRScreenRatePtr pRates;
+} RRScreenSize, *RRScreenSizePtr;
+
+#ifdef RANDR_10_INTERFACE
+
+typedef Bool (*RRSetConfigProcPtr) (ScreenPtr pScreen,
+ Rotation rotation,
+ int rate,
+ RRScreenSizePtr pSize);
+
+#endif
+
+
+typedef struct _rrScrPriv {
+ /*
+ * 'public' part of the structure; DDXen fill this in
+ * as they initialize
+ */
+#if RANDR_10_INTERFACE
+ RRSetConfigProcPtr rrSetConfig;
+#endif
+ RRGetInfoProcPtr rrGetInfo;
+#if RANDR_12_INTERFACE
+ RRScreenSetSizeProcPtr rrScreenSetSize;
+ RRCrtcSetProcPtr rrCrtcSet;
+ RRCrtcSetGammaProcPtr rrCrtcSetGamma;
+ RROutputSetPropertyProcPtr rrOutputSetProperty;
+ RROutputValidateModeProcPtr rrOutputValidateMode;
+ RRModeDestroyProcPtr rrModeDestroy;
+#endif
+
+ /*
+ * Private part of the structure; not considered part of the ABI
+ */
+ TimeStamp lastSetTime; /* last changed by client */
+ TimeStamp lastConfigTime; /* possible configs changed */
+ RRCloseScreenProcPtr CloseScreen;
+
+ Bool changed; /* some config changed */
+ Bool configChanged; /* configuration changed */
+ Bool layoutChanged; /* screen layout changed */
+
+ CARD16 minWidth, minHeight;
+ CARD16 maxWidth, maxHeight;
+ CARD16 width, height; /* last known screen size */
+ CARD16 mmWidth, mmHeight; /* last known screen size */
+
+ int numOutputs;
+ RROutputPtr *outputs;
+
+ int numCrtcs;
+ RRCrtcPtr *crtcs;
+
+ /* Last known pointer position */
+ RRCrtcPtr pointerCrtc;
+
+#ifdef RANDR_10_INTERFACE
+ /*
+ * Configuration information
+ */
+ Rotation rotations;
+ CARD16 reqWidth, reqHeight;
+
+ int nSizes;
+ RRScreenSizePtr pSizes;
+
+ Rotation rotation;
+ int rate;
+ int size;
+#endif
+} rrScrPrivRec, *rrScrPrivPtr;
+
+extern DevPrivateKey rrPrivKey;
+
+#define rrGetScrPriv(pScr) ((rrScrPrivPtr)dixLookupPrivate(&(pScr)->devPrivates, rrPrivKey))
+#define rrScrPriv(pScr) rrScrPrivPtr pScrPriv = rrGetScrPriv(pScr)
+#define SetRRScreen(s,p) dixSetPrivate(&(s)->devPrivates, rrPrivKey, p)
+
+/*
+ * each window has a list of clients requesting
+ * RRNotify events. Each client has a resource
+ * for each window it selects RRNotify input for,
+ * this resource is used to delete the RRNotifyRec
+ * entry from the per-window queue.
+ */
+
+typedef struct _RREvent *RREventPtr;
+
+typedef struct _RREvent {
+ RREventPtr next;
+ ClientPtr client;
+ WindowPtr window;
+ XID clientResource;
+ int mask;
+} RREventRec;
+
+typedef struct _RRTimes {
+ TimeStamp setTime;
+ TimeStamp configTime;
+} RRTimesRec, *RRTimesPtr;
+
+typedef struct _RRClient {
+ int major_version;
+ int minor_version;
+/* RRTimesRec times[0]; */
+} RRClientRec, *RRClientPtr;
+
+extern RESTYPE RRClientType, RREventType; /* resource types for event masks */
+extern DevPrivateKey RRClientPrivateKey;
+extern RESTYPE RRCrtcType, RRModeType, RROutputType;
+
+#define LookupOutput(client,id,a) ((RROutputPtr) \
+ (SecurityLookupIDByType (client, id, \
+ RROutputType, a)))
+#define LookupCrtc(client,id,a) ((RRCrtcPtr) \
+ (SecurityLookupIDByType (client, id, \
+ RRCrtcType, a)))
+#define LookupMode(client,id,a) ((RRModePtr) \
+ (SecurityLookupIDByType (client, id, \
+ RRModeType, a)))
+
+#define GetRRClient(pClient) ((RRClientPtr)dixLookupPrivate(&(pClient)->devPrivates, RRClientPrivateKey))
+#define rrClientPriv(pClient) RRClientPtr pRRClient = GetRRClient(pClient)
+
+/* Initialize the extension */
+void
+RRExtensionInit (void);
+
+#ifdef RANDR_12_INTERFACE
+/*
+ * Set the range of sizes for the screen
+ */
+void
+RRScreenSetSizeRange (ScreenPtr pScreen,
+ CARD16 minWidth,
+ CARD16 minHeight,
+ CARD16 maxWidth,
+ CARD16 maxHeight);
+#endif
+
+/* rrscreen.c */
+/*
+ * Notify the extension that the screen size has been changed.
+ * The driver is responsible for calling this whenever it has changed
+ * the size of the screen
+ */
+void
+RRScreenSizeNotify (ScreenPtr pScreen);
+
+/*
+ * Request that the screen be resized
+ */
+Bool
+RRScreenSizeSet (ScreenPtr pScreen,
+ CARD16 width,
+ CARD16 height,
+ CARD32 mmWidth,
+ CARD32 mmHeight);
+
+/*
+ * Send ConfigureNotify event to root window when 'something' happens
+ */
+void
+RRSendConfigNotify (ScreenPtr pScreen);
+
+/*
+ * screen dispatch
+ */
+int
+ProcRRGetScreenSizeRange (ClientPtr client);
+
+int
+ProcRRSetScreenSize (ClientPtr client);
+
+int
+ProcRRGetScreenResources (ClientPtr client);
+
+int
+ProcRRSetScreenConfig (ClientPtr client);
+
+int
+ProcRRGetScreenInfo (ClientPtr client);
+
+/*
+ * Deliver a ScreenNotify event
+ */
+void
+RRDeliverScreenEvent (ClientPtr client, WindowPtr pWin, ScreenPtr pScreen);
+
+/* mirandr.c */
+Bool
+miRandRInit (ScreenPtr pScreen);
+
+Bool
+miRRGetInfo (ScreenPtr pScreen, Rotation *rotations);
+
+Bool
+miRRGetScreenInfo (ScreenPtr pScreen);
+
+Bool
+miRRCrtcSet (ScreenPtr pScreen,
+ RRCrtcPtr crtc,
+ RRModePtr mode,
+ int x,
+ int y,
+ Rotation rotation,
+ int numOutput,
+ RROutputPtr *outputs);
+
+Bool
+miRROutputSetProperty (ScreenPtr pScreen,
+ RROutputPtr output,
+ Atom property,
+ RRPropertyValuePtr value);
+
+Bool
+miRROutputValidateMode (ScreenPtr pScreen,
+ RROutputPtr output,
+ RRModePtr mode);
+
+void
+miRRModeDestroy (ScreenPtr pScreen,
+ RRModePtr mode);
+
+/* randr.c */
+/*
+ * Send all pending events
+ */
+void
+RRTellChanged (ScreenPtr pScreen);
+
+/*
+ * Poll the driver for changed information
+ */
+Bool
+RRGetInfo (ScreenPtr pScreen);
+
+Bool RRInit (void);
+
+Bool RRScreenInit(ScreenPtr pScreen);
+
+RROutputPtr
+RRFirstOutput (ScreenPtr pScreen);
+
+Rotation
+RRGetRotation (ScreenPtr pScreen);
+
+CARD16
+RRVerticalRefresh (xRRModeInfo *mode);
+
+#ifdef RANDR_10_INTERFACE
+/*
+ * This is the old interface, deprecated but left
+ * around for compatibility
+ */
+
+/*
+ * Then, register the specific size with the screen
+ */
+
+RRScreenSizePtr
+RRRegisterSize (ScreenPtr pScreen,
+ short width,
+ short height,
+ short mmWidth,
+ short mmHeight);
+
+Bool RRRegisterRate (ScreenPtr pScreen,
+ RRScreenSizePtr pSize,
+ int rate);
+
+/*
+ * Finally, set the current configuration of the screen
+ */
+
+void
+RRSetCurrentConfig (ScreenPtr pScreen,
+ Rotation rotation,
+ int rate,
+ RRScreenSizePtr pSize);
+
+Bool RRScreenInit (ScreenPtr pScreen);
+
+Rotation
+RRGetRotation (ScreenPtr pScreen);
+
+int
+RRSetScreenConfig (ScreenPtr pScreen,
+ Rotation rotation,
+ int rate,
+ RRScreenSizePtr pSize);
+
+#endif
+
+/* rrcrtc.c */
+
+/*
+ * Notify the CRTC of some change; layoutChanged indicates that
+ * some position or size element changed
+ */
+void
+RRCrtcChanged (RRCrtcPtr crtc, Bool layoutChanged);
+
+/*
+ * Create a CRTC
+ */
+RRCrtcPtr
+RRCrtcCreate (ScreenPtr pScreen, void *devPrivate);
+
+/*
+ * Set the allowed rotations on a CRTC
+ */
+void
+RRCrtcSetRotations (RRCrtcPtr crtc, Rotation rotations);
+
+/*
+ * Notify the extension that the Crtc has been reconfigured,
+ * the driver calls this whenever it has updated the mode
+ */
+Bool
+RRCrtcNotify (RRCrtcPtr crtc,
+ RRModePtr mode,
+ int x,
+ int y,
+ Rotation rotation,
+ int numOutputs,
+ RROutputPtr *outputs);
+
+void
+RRDeliverCrtcEvent (ClientPtr client, WindowPtr pWin, RRCrtcPtr crtc);
+
+/*
+ * Request that the Crtc be reconfigured
+ */
+Bool
+RRCrtcSet (RRCrtcPtr crtc,
+ RRModePtr mode,
+ int x,
+ int y,
+ Rotation rotation,
+ int numOutput,
+ RROutputPtr *outputs);
+
+/*
+ * Request that the Crtc gamma be changed
+ */
+
+Bool
+RRCrtcGammaSet (RRCrtcPtr crtc,
+ CARD16 *red,
+ CARD16 *green,
+ CARD16 *blue);
+
+/*
+ * Notify the extension that the Crtc gamma has been changed
+ * The driver calls this whenever it has changed the gamma values
+ * in the RRCrtcRec
+ */
+
+Bool
+RRCrtcGammaNotify (RRCrtcPtr crtc);
+
+/*
+ * Set the size of the gamma table at server startup time
+ */
+
+Bool
+RRCrtcGammaSetSize (RRCrtcPtr crtc,
+ int size);
+
+/*
+ * Return the area of the frame buffer scanned out by the crtc,
+ * taking into account the current mode and rotation
+ */
+
+void
+RRCrtcGetScanoutSize(RRCrtcPtr crtc, int *width, int *height);
+
+/*
+ * Destroy a Crtc at shutdown
+ */
+void
+RRCrtcDestroy (RRCrtcPtr crtc);
+
+/*
+ * Initialize crtc type
+ */
+Bool
+RRCrtcInit (void);
+
+/*
+ * Crtc dispatch
+ */
+
+int
+ProcRRGetCrtcInfo (ClientPtr client);
+
+int
+ProcRRSetCrtcConfig (ClientPtr client);
+
+int
+ProcRRGetCrtcGammaSize (ClientPtr client);
+
+int
+ProcRRGetCrtcGamma (ClientPtr client);
+
+int
+ProcRRSetCrtcGamma (ClientPtr client);
+
+/* rrdispatch.c */
+Bool
+RRClientKnowsRates (ClientPtr pClient);
+
+/* rrmode.c */
+/*
+ * Find, and if necessary, create a mode
+ */
+
+RRModePtr
+RRModeGet (xRRModeInfo *modeInfo,
+ const char *name);
+
+void
+RRModePruneUnused (ScreenPtr pScreen);
+
+/*
+ * Destroy a mode.
+ */
+
+void
+RRModeDestroy (RRModePtr mode);
+
+/*
+ * Return a list of modes that are valid for some output in pScreen
+ */
+RRModePtr *
+RRModesForScreen (ScreenPtr pScreen, int *num_ret);
+
+/*
+ * Initialize mode type
+ */
+Bool
+RRModeInit (void);
+
+int
+ProcRRCreateMode (ClientPtr client);
+
+int
+ProcRRDestroyMode (ClientPtr client);
+
+int
+ProcRRAddOutputMode (ClientPtr client);
+
+int
+ProcRRDeleteOutputMode (ClientPtr client);
+
+/* rroutput.c */
+
+/*
+ * Notify the output of some change. configChanged indicates whether
+ * any external configuration (mode list, clones, connected status)
+ * has changed, or whether the change was strictly internal
+ * (which crtc is in use)
+ */
+void
+RROutputChanged (RROutputPtr output, Bool configChanged);
+
+/*
+ * Create an output
+ */
+
+RROutputPtr
+RROutputCreate (ScreenPtr pScreen,
+ const char *name,
+ int nameLength,
+ void *devPrivate);
+
+/*
+ * Notify extension that output parameters have been changed
+ */
+Bool
+RROutputSetClones (RROutputPtr output,
+ RROutputPtr *clones,
+ int numClones);
+
+Bool
+RROutputSetModes (RROutputPtr output,
+ RRModePtr *modes,
+ int numModes,
+ int numPreferred);
+
+int
+RROutputAddUserMode (RROutputPtr output,
+ RRModePtr mode);
+
+int
+RROutputDeleteUserMode (RROutputPtr output,
+ RRModePtr mode);
+
+Bool
+RROutputSetCrtcs (RROutputPtr output,
+ RRCrtcPtr *crtcs,
+ int numCrtcs);
+
+Bool
+RROutputSetConnection (RROutputPtr output,
+ CARD8 connection);
+
+Bool
+RROutputSetSubpixelOrder (RROutputPtr output,
+ int subpixelOrder);
+
+Bool
+RROutputSetPhysicalSize (RROutputPtr output,
+ int mmWidth,
+ int mmHeight);
+
+void
+RRDeliverOutputEvent(ClientPtr client, WindowPtr pWin, RROutputPtr output);
+
+void
+RROutputDestroy (RROutputPtr output);
+
+int
+ProcRRGetOutputInfo (ClientPtr client);
+
+/*
+ * Initialize output type
+ */
+Bool
+RROutputInit (void);
+
+/* rrpointer.c */
+void
+RRPointerMoved (ScreenPtr pScreen, int x, int y);
+
+void
+RRPointerScreenConfigured (ScreenPtr pScreen);
+
+/* rrproperty.c */
+
+void
+RRDeleteAllOutputProperties (RROutputPtr output);
+
+RRPropertyValuePtr
+RRGetOutputProperty (RROutputPtr output, Atom property, Bool pending);
+
+RRPropertyPtr
+RRQueryOutputProperty (RROutputPtr output, Atom property);
+
+void
+RRDeleteOutputProperty (RROutputPtr output, Atom property);
+
+Bool
+RRPostPendingProperties (RROutputPtr output);
+
+int
+RRChangeOutputProperty (RROutputPtr output, Atom property, Atom type,
+ int format, int mode, unsigned long len,
+ pointer value, Bool sendevent, Bool pending);
+
+int
+RRConfigureOutputProperty (RROutputPtr output, Atom property,
+ Bool pending, Bool range, Bool immutable,
+ int num_values, INT32 *values);
+int
+ProcRRChangeOutputProperty (ClientPtr client);
+
+int
+ProcRRGetOutputProperty (ClientPtr client);
+
+int
+ProcRRListOutputProperties (ClientPtr client);
+
+int
+ProcRRQueryOutputProperty (ClientPtr client);
+
+int
+ProcRRConfigureOutputProperty (ClientPtr client);
+
+int
+ProcRRDeleteOutputProperty (ClientPtr client);
+
+/* rrxinerama.c */
+void
+RRXineramaExtensionInit(void);
+
+#endif /* _RANDRSTR_H_ */
+
+/*
+
+randr extension implementation structure
+
+Query state:
+ ProcRRGetScreenInfo/ProcRRGetScreenResources
+ RRGetInfo
+
+ • Request configuration from driver, either 1.0 or 1.2 style
+ • These functions only record state changes, all
+ other actions are pended until RRTellChanged is called
+
+ ->rrGetInfo
+ 1.0:
+ RRRegisterSize
+ RRRegisterRate
+ RRSetCurrentConfig
+ 1.2:
+ RRScreenSetSizeRange
+ RROutputSetCrtcs
+ RRModeGet
+ RROutputSetModes
+ RROutputSetConnection
+ RROutputSetSubpixelOrder
+ RROutputSetClones
+ RRCrtcNotify
+
+ • Must delay scanning configuration until after ->rrGetInfo returns
+ because some drivers will call SetCurrentConfig in the middle
+ of the ->rrGetInfo operation.
+
+ 1.0:
+
+ • Scan old configuration, mirror to new structures
+
+ RRScanOldConfig
+ RRCrtcCreate
+ RROutputCreate
+ RROutputSetCrtcs
+ RROutputSetConnection
+ RROutputSetSubpixelOrder
+ RROldModeAdd • This adds modes one-at-a-time
+ RRModeGet
+ RRCrtcNotify
+
+ • send events, reset pointer if necessary
+
+ RRTellChanged
+ WalkTree (sending events)
+
+ • when layout has changed:
+ RRPointerScreenConfigured
+ RRSendConfigNotify
+
+Asynchronous state setting (1.2 only)
+ When setting state asynchronously, the driver invokes the
+ ->rrGetInfo function and then calls RRTellChanged to flush
+ the changes to the clients and reset pointer if necessary
+
+Set state
+
+ ProcRRSetScreenConfig
+ RRCrtcSet
+ 1.2:
+ ->rrCrtcSet
+ RRCrtcNotify
+ 1.0:
+ ->rrSetConfig
+ RRCrtcNotify
+ RRTellChanged
+ */