R6.6 is the Xorg base-lineXORG-MAIN

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diff --git a/dbe/dbestruct.h b/dbe/dbestruct.h
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+++ b/dbe/dbestruct.h
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+/* $Xorg: dbestruct.h,v 1.3 2000/08/17 19:48:16 cpqbld Exp $ */
+/******************************************************************************
+ * 
+ * Copyright (c) 1994, 1995  Hewlett-Packard Company
+ *
+ * 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 HEWLETT-PACKARD COMPANY 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 of the Hewlett-Packard
+ * Company shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the Hewlett-Packard Company.
+ * 
+ *     Header file for DIX-related DBE
+ *
+ *****************************************************************************/
+
+
+#ifndef DBE_STRUCT_H
+#define DBE_STRUCT_H
+
+
+/* INCLUDES */
+
+#define NEED_DBE_PROTOCOL
+#include "Xdbeproto.h"
+#include "windowstr.h"
+
+
+/* DEFINES */
+
+#define DBE_SCREEN_PRIV(pScreen) \
+    ((dbeScreenPrivIndex < 0) ? \
+     NULL : \
+     ((DbeScreenPrivPtr)((pScreen)->devPrivates[dbeScreenPrivIndex].ptr)))
+
+#define DBE_SCREEN_PRIV_FROM_DRAWABLE(pDrawable) \
+    DBE_SCREEN_PRIV((pDrawable)->pScreen)
+
+#define DBE_SCREEN_PRIV_FROM_WINDOW_PRIV(pDbeWindowPriv) \
+    DBE_SCREEN_PRIV((pDbeWindowPriv)->pWindow->drawable.pScreen)
+
+#define DBE_SCREEN_PRIV_FROM_WINDOW(pWindow) \
+    DBE_SCREEN_PRIV((pWindow)->drawable.pScreen)
+
+#define DBE_SCREEN_PRIV_FROM_PIXMAP(pPixmap) \
+    DBE_SCREEN_PRIV((pPixmap)->drawable.pScreen)
+
+#define DBE_SCREEN_PRIV_FROM_GC(pGC)\
+    DBE_SCREEN_PRIV((pGC)->pScreen)
+
+#define DBE_WINDOW_PRIV(pWindow)\
+    ((dbeWindowPrivIndex < 0) ? \
+     NULL : \
+     ((DbeWindowPrivPtr)(pWindow->devPrivates[dbeWindowPrivIndex].ptr)))
+
+/* Initial size of the buffer ID array in the window priv. */
+#define DBE_INIT_MAX_IDS	2
+
+/* Reallocation increment for the buffer ID array. */
+#define DBE_INCR_MAX_IDS	4
+
+/* Marker for free elements in the buffer ID array. */
+#define DBE_FREE_ID_ELEMENT	0
+
+
+/* TYPEDEFS */
+
+/* Record used to pass swap information between DIX and DDX swapping
+ * procedures.
+ */
+typedef struct _DbeSwapInfoRec
+{
+    WindowPtr		pWindow;
+    unsigned char	swapAction;
+
+} DbeSwapInfoRec, *DbeSwapInfoPtr;
+
+/*
+ ******************************************************************************
+ ** Per-window data
+ ******************************************************************************
+ */
+
+typedef struct _DbeWindowPrivRec
+{
+    /* A pointer to the window with which the DBE window private (buffer) is
+     * associated.
+     */
+    WindowPtr		pWindow;
+
+    /* Last known swap action for this buffer.  Legal values for this field
+     * are XdbeUndefined, XdbeBackground, XdbeUntouched, and XdbeCopied.
+     */
+    unsigned char	swapAction;
+
+    /* Last known buffer size.
+     */
+    unsigned short	width, height;
+
+    /* Coordinates used for static gravity when the window is positioned.
+     */
+    short		x, y;
+
+    /* Number of XIDs associated with this buffer.
+     */
+    int			nBufferIDs;
+
+    /* Capacity of the current buffer ID array, IDs. */
+    int			maxAvailableIDs;
+
+    /* Pointer to the array of buffer IDs.  This initially points to initIDs.
+     * When the static limit of the initIDs array is reached, the array is
+     * reallocated and this pointer is set to the new array instead of initIDs.
+     */
+    XID			*IDs;
+
+    /* Initial array of buffer IDs.  We are defining the XID array within the
+     * window priv to optimize for data locality.  In most cases, only one
+     * buffer will be associated with a window.  Having the array declared
+     * here can prevent us from accessing the data in another memory page,
+     * possibly resulting in a page swap and loss of performance.  Initially we
+     * will use this array to store buffer IDs.  For situations where we have
+     * more IDs than can fit in this static array, we will allocate a larger
+     * array to use, possibly suffering a performance loss. 
+     */
+    XID			initIDs[DBE_INIT_MAX_IDS];
+
+    /* Device-specific private information.
+     */
+    DevUnion		*devPrivates;
+
+} DbeWindowPrivRec, *DbeWindowPrivPtr;
+
+
+/*
+ ******************************************************************************
+ ** Per-screen data
+ ******************************************************************************
+ */
+
+typedef struct _DbeScreenPrivRec
+{
+    /* Info for creating window privs */
+    int          winPrivPrivLen;    /* Length of privs in DbeWindowPrivRec   */
+    unsigned int *winPrivPrivSizes; /* Array of private record sizes         */
+    unsigned int totalWinPrivSize;  /* PrivRec + size of all priv priv ptrs  */
+
+    /* Resources created by DIX to be used by DDX */
+    RESTYPE	dbeDrawableResType;
+    RESTYPE	dbeWindowPrivResType;
+
+    /* Private indices created by DIX to be used by DDX */
+    int		dbeScreenPrivIndex;
+    int		dbeWindowPrivIndex;
+
+    /* Wrapped functions
+     * It is the responsibilty of the DDX layer to wrap PositionWindow().
+     * DbeExtensionInit wraps DestroyWindow().
+     */
+    PositionWindowProcPtr PositionWindow;
+    DestroyWindowProcPtr  DestroyWindow;
+
+    /* Per-screen DIX routines */
+    Bool	(*SetupBackgroundPainter)(
+#if NeedNestedPrototypes
+		WindowPtr /*pWin*/,
+		GCPtr /*pGC*/
+#endif
+);
+    DbeWindowPrivPtr (*AllocWinPriv)(
+#if NeedNestedPrototypes
+		ScreenPtr /*pScreen*/
+#endif
+);
+    int		(*AllocWinPrivPrivIndex)(
+#if NeedNestedPrototypes
+		void
+#endif
+);
+    Bool	(*AllocWinPrivPriv)(
+#if NeedNestedPrototypes
+		ScreenPtr /*pScreen*/,
+		int /*index*/,
+		unsigned /*amount*/
+#endif
+);
+
+    /* Per-screen DDX routines */
+    Bool	(*GetVisualInfo)(
+#if NeedNestedPrototypes
+		ScreenPtr /*pScreen*/,
+		XdbeScreenVisualInfo * /*pVisInfo*/
+#endif
+);
+    int		(*AllocBackBufferName)(
+#if NeedNestedPrototypes
+		WindowPtr /*pWin*/,
+		XID /*bufId*/,
+		int /*swapAction*/
+#endif
+);
+    int		(*SwapBuffers)(
+#if NeedNestedPrototypes
+		ClientPtr /*client*/,
+		int * /*pNumWindows*/,
+		DbeSwapInfoPtr /*swapInfo*/
+#endif
+);
+    void	(*BeginIdiom)(
+#if NeedNestedPrototypes
+		ClientPtr /*client*/
+#endif
+);
+    void	(*EndIdiom)(
+#if NeedNestedPrototypes
+		ClientPtr /*client*/
+#endif
+);
+    void	(*WinPrivDelete)(
+#if NeedNestedPrototypes
+		DbeWindowPrivPtr /*pDbeWindowPriv*/,
+		XID /*bufId*/
+#endif
+);
+    void	(*ResetProc)(
+#if NeedNestedPrototypes
+		ScreenPtr /*pScreen*/
+#endif
+);
+    void	(*ValidateBuffer)(
+#if NeedNestedPrototypes
+		WindowPtr /*pWin*/,
+		XID /*bufId*/,
+		Bool /*dstbuffer*/
+#endif
+);
+
+    /* Device-specific private information.
+     */
+    DevUnion	*devPrivates;
+
+} DbeScreenPrivRec, *DbeScreenPrivPtr;
+
+#endif /* DBE_STRUCT_H */