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-rw-r--r--xorg-server/dbe/dbe.c3319
1 files changed, 1658 insertions, 1661 deletions
diff --git a/xorg-server/dbe/dbe.c b/xorg-server/dbe/dbe.c
index d1074a2fb..51bbdc6c9 100644
--- a/xorg-server/dbe/dbe.c
+++ b/xorg-server/dbe/dbe.c
@@ -1,1661 +1,1658 @@
-/******************************************************************************
- *
- * 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.
- *
- * DIX DBE code
- *
- *****************************************************************************/
-
-
-/* INCLUDES */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <string.h>
-#if HAVE_STDINT_H
-#include <stdint.h>
-#elif !defined(UINT32_MAX)
-#define UINT32_MAX 0xffffffffU
-#endif
-
-#include <X11/X.h>
-#include <X11/Xproto.h>
-#include "scrnintstr.h"
-#include "extnsionst.h"
-#include "gcstruct.h"
-#include "dixstruct.h"
-#define NEED_DBE_PROTOCOL
-#include "dbestruct.h"
-#include "midbe.h"
-#include "xace.h"
-
-/* GLOBALS */
-
-/* These are globals for use by DDX */
-DevPrivateKeyRec dbeScreenPrivKeyRec;
-DevPrivateKeyRec dbeWindowPrivKeyRec;
-
-/* These are globals for use by DDX */
-RESTYPE dbeDrawableResType;
-RESTYPE dbeWindowPrivResType;
-
-/* Used to generate DBE's BadBuffer error. */
-static int dbeErrorBase;
-
-/******************************************************************************
- *
- * DBE DIX Procedure: DbeStubScreen
- *
- * Description:
- *
- * This is function stubs the function pointers in the given DBE screen
- * private and increments the number of stubbed screens.
- *
- *****************************************************************************/
-
-static void
-DbeStubScreen(DbeScreenPrivPtr pDbeScreenPriv, int *nStubbedScreens)
-{
- /* Stub DIX. */
- pDbeScreenPriv->SetupBackgroundPainter = NULL;
-
- /* Do not unwrap PositionWindow nor DestroyWindow. If the DDX
- * initialization function failed, we assume that it did not wrap
- * PositionWindow. Also, DestroyWindow is only wrapped if the DDX
- * initialization function succeeded.
- */
-
- /* Stub DDX. */
- pDbeScreenPriv->GetVisualInfo = NULL;
- pDbeScreenPriv->AllocBackBufferName = NULL;
- pDbeScreenPriv->SwapBuffers = NULL;
- pDbeScreenPriv->BeginIdiom = NULL;
- pDbeScreenPriv->EndIdiom = NULL;
- pDbeScreenPriv->WinPrivDelete = NULL;
- pDbeScreenPriv->ResetProc = NULL;
-
- (*nStubbedScreens)++;
-
-} /* DbeStubScreen() */
-
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: ProcDbeGetVersion
- *
- * Description:
- *
- * This function is for processing a DbeGetVersion request.
- * This request returns the major and minor version numbers of this
- * extension.
- *
- * Return Values:
- *
- * Success
- *
- *****************************************************************************/
-
-static int
-ProcDbeGetVersion(ClientPtr client)
-{
- /* REQUEST(xDbeGetVersionReq); */
- xDbeGetVersionReply rep;
- register int n;
-
-
- REQUEST_SIZE_MATCH(xDbeGetVersionReq);
-
- rep.type = X_Reply;
- rep.length = 0;
- rep.sequenceNumber = client->sequence;
- rep.majorVersion = DBE_MAJOR_VERSION;
- rep.minorVersion = DBE_MINOR_VERSION;
-
- if (client->swapped)
- {
- swaps(&rep.sequenceNumber, n);
- }
-
- WriteToClient(client, sizeof(xDbeGetVersionReply), (char *)&rep);
-
- return Success;
-
-} /* ProcDbeGetVersion() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: ProcDbeAllocateBackBufferName
- *
- * Description:
- *
- * This function is for processing a DbeAllocateBackBufferName request.
- * This request allocates a drawable ID used to refer to the back buffer
- * of a window.
- *
- * Return Values:
- *
- * BadAlloc - server can not allocate resources
- * BadIDChoice - id is out of range for client; id is already in use
- * BadMatch - window is not an InputOutput window;
- * visual of window is not on list returned by
- * DBEGetVisualInfo;
- * BadValue - invalid swap action is specified
- * BadWindow - window is not a valid window
- * Success
- *
- *****************************************************************************/
-
-static int
-ProcDbeAllocateBackBufferName(ClientPtr client)
-{
- REQUEST(xDbeAllocateBackBufferNameReq);
- WindowPtr pWin;
- DbeScreenPrivPtr pDbeScreenPriv;
- DbeWindowPrivPtr pDbeWindowPriv;
- XdbeScreenVisualInfo scrVisInfo;
- register int i;
- Bool visualMatched = FALSE;
- xDbeSwapAction swapAction;
- VisualID visual;
- int status;
- int add_index;
-
-
- REQUEST_SIZE_MATCH(xDbeAllocateBackBufferNameReq);
-
- /* The window must be valid. */
- status = dixLookupWindow(&pWin, stuff->window, client, DixManageAccess);
- if (status != Success)
- return status;
-
- /* The window must be InputOutput. */
- if (pWin->drawable.class != InputOutput)
- {
- return BadMatch;
- }
-
- /* The swap action must be valid. */
- swapAction = stuff->swapAction; /* use local var for performance. */
- if ((swapAction != XdbeUndefined ) &&
- (swapAction != XdbeBackground) &&
- (swapAction != XdbeUntouched ) &&
- (swapAction != XdbeCopied ))
- {
- return BadValue;
- }
-
- /* The id must be in range and not already in use. */
- LEGAL_NEW_RESOURCE(stuff->buffer, client);
-
- /* The visual of the window must be in the list returned by
- * GetVisualInfo.
- */
- pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW(pWin);
- if (!pDbeScreenPriv->GetVisualInfo)
- return BadMatch; /* screen doesn't support double buffering */
-
- if (!(*pDbeScreenPriv->GetVisualInfo)(pWin->drawable.pScreen, &scrVisInfo))
- {
- /* GetVisualInfo() failed to allocate visual info data. */
- return BadAlloc;
- }
-
- /* See if the window's visual is on the list. */
- visual = wVisual(pWin);
- for (i = 0; (i < scrVisInfo.count) && !visualMatched; i++)
- {
- if (scrVisInfo.visinfo[i].visual == visual)
- {
- visualMatched = TRUE;
- }
- }
-
- /* Free what was allocated by the GetVisualInfo() call above. */
- free(scrVisInfo.visinfo);
-
- if (!visualMatched)
- {
- return BadMatch;
- }
-
- if ((pDbeWindowPriv = DBE_WINDOW_PRIV(pWin)) == NULL)
- {
- /* There is no buffer associated with the window.
- * Allocate a window priv.
- */
-
- pDbeWindowPriv = dixAllocateObjectWithPrivates(DbeWindowPrivRec, PRIVATE_DBE_WINDOW);
- if (!pDbeWindowPriv)
- return BadAlloc;
-
- /* Fill out window priv information. */
- pDbeWindowPriv->pWindow = pWin;
- pDbeWindowPriv->width = pWin->drawable.width;
- pDbeWindowPriv->height = pWin->drawable.height;
- pDbeWindowPriv->x = pWin->drawable.x;
- pDbeWindowPriv->y = pWin->drawable.y;
- pDbeWindowPriv->nBufferIDs = 0;
-
- /* Set the buffer ID array pointer to the initial (static) array). */
- pDbeWindowPriv->IDs = pDbeWindowPriv->initIDs;
-
- /* Initialize the buffer ID list. */
- pDbeWindowPriv->maxAvailableIDs = DBE_INIT_MAX_IDS;
- pDbeWindowPriv->IDs[0] = stuff->buffer;
-
- add_index = 0;
- for (i = 0; i < DBE_INIT_MAX_IDS; i++)
- {
- pDbeWindowPriv->IDs[i] = DBE_FREE_ID_ELEMENT;
- }
-
- /* Actually connect the window priv to the window. */
- dixSetPrivate(&pWin->devPrivates, dbeWindowPrivKey, pDbeWindowPriv);
-
- } /* if -- There is no buffer associated with the window. */
-
- else
- {
- /* A buffer is already associated with the window.
- * Add the new buffer ID to the array, reallocating the array memory
- * if necessary.
- */
-
- /* Determine if there is a free element in the ID array. */
- for (i = 0; i < pDbeWindowPriv->maxAvailableIDs; i++)
- {
- if (pDbeWindowPriv->IDs[i] == DBE_FREE_ID_ELEMENT)
- {
- /* There is still room in the ID array. */
- break;
- }
- }
-
- if (i == pDbeWindowPriv->maxAvailableIDs)
- {
- /* No more room in the ID array -- reallocate another array. */
- XID *pIDs;
-
- /* Setup an array pointer for the realloc operation below. */
- if (pDbeWindowPriv->maxAvailableIDs == DBE_INIT_MAX_IDS)
- {
- /* We will malloc a new array. */
- pIDs = NULL;
- }
- else
- {
- /* We will realloc a new array. */
- pIDs = pDbeWindowPriv->IDs;
- }
-
- /* malloc/realloc a new array and initialize all elements to 0. */
- pDbeWindowPriv->IDs = (XID *)realloc(pIDs,
- (pDbeWindowPriv->maxAvailableIDs+DBE_INCR_MAX_IDS)*sizeof(XID));
- if (!pDbeWindowPriv->IDs)
- {
- return BadAlloc;
- }
- memset(&pDbeWindowPriv->IDs[pDbeWindowPriv->nBufferIDs], 0,
- (pDbeWindowPriv->maxAvailableIDs + DBE_INCR_MAX_IDS -
- pDbeWindowPriv->nBufferIDs) * sizeof(XID));
-
- if (pDbeWindowPriv->maxAvailableIDs == DBE_INIT_MAX_IDS)
- {
- /* We just went from using the initial (static) array to a
- * newly allocated array. Copy the IDs from the initial array
- * to the new array.
- */
- memcpy(pDbeWindowPriv->IDs, pDbeWindowPriv->initIDs,
- DBE_INIT_MAX_IDS * sizeof(XID));
- }
-
- pDbeWindowPriv->maxAvailableIDs += DBE_INCR_MAX_IDS;
- }
-
- add_index = i;
-
- } /* else -- A buffer is already associated with the window. */
-
-
- /* Call the DDX routine to allocate the back buffer. */
- status = (*pDbeScreenPriv->AllocBackBufferName)(pWin, stuff->buffer,
- stuff->swapAction);
-
- if (status == Success)
- {
- pDbeWindowPriv->IDs[add_index] = stuff->buffer;
- if (!AddResource(stuff->buffer, dbeWindowPrivResType,
- (pointer)pDbeWindowPriv))
- {
- pDbeWindowPriv->IDs[add_index] = DBE_FREE_ID_ELEMENT;
-
- if (pDbeWindowPriv->nBufferIDs == 0) {
- status = BadAlloc;
- goto out_free;
- }
- }
- } else {
- /* The DDX buffer allocation routine failed for the first buffer of
- * this window.
- */
- if (pDbeWindowPriv->nBufferIDs == 0) {
- goto out_free;
- }
- }
-
- /* Increment the number of buffers (XIDs) associated with this window. */
- pDbeWindowPriv->nBufferIDs++;
-
- /* Set swap action on all calls. */
- pDbeWindowPriv->swapAction = stuff->swapAction;
-
- return status;
-
-out_free:
- dixSetPrivate(&pWin->devPrivates, dbeWindowPrivKey, NULL);
- free(pDbeWindowPriv);
- return status;
-
-} /* ProcDbeAllocateBackBufferName() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: ProcDbeDeallocateBackBufferName
- *
- * Description:
- *
- * This function is for processing a DbeDeallocateBackBufferName request.
- * This request frees a drawable ID that was obtained by a
- * DbeAllocateBackBufferName request.
- *
- * Return Values:
- *
- * BadBuffer - buffer to deallocate is not associated with a window
- * Success
- *
- *****************************************************************************/
-
-static int
-ProcDbeDeallocateBackBufferName(ClientPtr client)
-{
- REQUEST(xDbeDeallocateBackBufferNameReq);
- DbeWindowPrivPtr pDbeWindowPriv;
- int rc, i;
- pointer val;
-
-
- REQUEST_SIZE_MATCH(xDbeDeallocateBackBufferNameReq);
-
- /* Buffer name must be valid */
- rc = dixLookupResourceByType((pointer *)&pDbeWindowPriv, stuff->buffer,
- dbeWindowPrivResType, client,
- DixDestroyAccess);
- if (rc != Success)
- return rc;
-
- rc = dixLookupResourceByType(&val, stuff->buffer, dbeDrawableResType,
- client, DixDestroyAccess);
- if (rc != Success)
- return rc;
-
- /* Make sure that the id is valid for the window.
- * This is paranoid code since we already looked up the ID by type
- * above.
- */
-
- for (i = 0; i < pDbeWindowPriv->nBufferIDs; i++)
- {
- /* Loop through the ID list to find the ID. */
- if (pDbeWindowPriv->IDs[i] == stuff->buffer)
- {
- break;
- }
- }
-
- if (i == pDbeWindowPriv->nBufferIDs)
- {
- /* We did not find the ID in the ID list. */
- client->errorValue = stuff->buffer;
- return dbeErrorBase + DbeBadBuffer;
- }
-
- FreeResource(stuff->buffer, RT_NONE);
-
- return Success;
-
-} /* ProcDbeDeallocateBackBufferName() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: ProcDbeSwapBuffers
- *
- * Description:
- *
- * This function is for processing a DbeSwapBuffers request.
- * This request swaps the buffers for all windows listed, applying the
- * appropriate swap action for each window.
- *
- * Return Values:
- *
- * BadAlloc - local allocation failed; this return value is not defined
- * by the protocol
- * BadMatch - a window in request is not double-buffered; a window in
- * request is listed more than once
- * BadValue - invalid swap action is specified; no swap action is
- * specified
- * BadWindow - a window in request is not valid
- * Success
- *
- *****************************************************************************/
-
-static int
-ProcDbeSwapBuffers(ClientPtr client)
-{
- REQUEST(xDbeSwapBuffersReq);
- WindowPtr pWin;
- DbeScreenPrivPtr pDbeScreenPriv;
- DbeSwapInfoPtr swapInfo;
- xDbeSwapInfo *dbeSwapInfo;
- int error;
- register int i, j;
- int nStuff;
-
-
- REQUEST_AT_LEAST_SIZE(xDbeSwapBuffersReq);
- nStuff = stuff->n; /* use local variable for performance. */
-
- if (nStuff == 0)
- {
- return Success;
- }
-
- if (nStuff > UINT32_MAX / sizeof(DbeSwapInfoRec))
- return BadAlloc;
-
- /* Get to the swap info appended to the end of the request. */
- dbeSwapInfo = (xDbeSwapInfo *)&stuff[1];
-
- /* Allocate array to record swap information. */
- swapInfo = (DbeSwapInfoPtr)malloc(nStuff * sizeof(DbeSwapInfoRec));
- if (swapInfo == NULL)
- {
- return BadAlloc;
- }
-
-
- for (i = 0; i < nStuff; i++)
- {
- /* Check all windows to swap. */
-
- /* Each window must be a valid window - BadWindow. */
- error = dixLookupWindow(&pWin, dbeSwapInfo[i].window, client,
- DixWriteAccess);
- if (error != Success) {
- free(swapInfo);
- return error;
- }
-
- /* Each window must be double-buffered - BadMatch. */
- if (DBE_WINDOW_PRIV(pWin) == NULL)
- {
- free(swapInfo);
- return BadMatch;
- }
-
- /* Each window must only be specified once - BadMatch. */
- for (j = i + 1; j < nStuff; j++)
- {
- if (dbeSwapInfo[i].window == dbeSwapInfo[j].window)
- {
- free(swapInfo);
- return BadMatch;
- }
- }
-
- /* Each swap action must be valid - BadValue. */
- if ((dbeSwapInfo[i].swapAction != XdbeUndefined ) &&
- (dbeSwapInfo[i].swapAction != XdbeBackground) &&
- (dbeSwapInfo[i].swapAction != XdbeUntouched ) &&
- (dbeSwapInfo[i].swapAction != XdbeCopied ))
- {
- free(swapInfo);
- return BadValue;
- }
-
- /* Everything checks out OK. Fill in the swap info array. */
- swapInfo[i].pWindow = pWin;
- swapInfo[i].swapAction = dbeSwapInfo[i].swapAction;
-
- } /* for (i = 0; i < nStuff; i++) */
-
-
- /* Call the DDX routine to perform the swap(s). The DDX routine should
- * scan the swap list (swap info), swap any buffers that it knows how to
- * handle, delete them from the list, and update nStuff to indicate how
- * many windows it did not handle.
- *
- * This scheme allows a range of sophistication in the DDX SwapBuffers()
- * implementation. Naive implementations could just swap the first buffer
- * in the list, move the last buffer to the front, decrement nStuff, and
- * return. The next level of sophistication could be to scan the whole
- * list for windows on the same screen. Up another level, the DDX routine
- * could deal with cross-screen synchronization.
- */
-
- while (nStuff > 0)
- {
- pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW(swapInfo[0].pWindow);
- error = (*pDbeScreenPriv->SwapBuffers)(client, &nStuff, swapInfo);
- if (error != Success)
- {
- free(swapInfo);
- return error;
- }
- }
-
- free(swapInfo);
- return Success;
-
-} /* ProcDbeSwapBuffers() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: ProcDbeBeginIdiom
- *
- * Description:
- *
- * This function is for processing a DbeBeginIdiom request.
- * This request informs the server that a complex swap will immediately
- * follow this request.
- *
- * Return Values:
- *
- * Success
- *
- *****************************************************************************/
-
-static int
-ProcDbeBeginIdiom(ClientPtr client)
-{
- /* REQUEST(xDbeBeginIdiomReq); */
- DbeScreenPrivPtr pDbeScreenPriv;
- register int i;
-
-
- REQUEST_SIZE_MATCH(xDbeBeginIdiomReq);
-
- for (i = 0; i < screenInfo.numScreens; i++)
- {
- pDbeScreenPriv = DBE_SCREEN_PRIV(screenInfo.screens[i]);
-
- /* Call the DDX begin idiom procedure if there is one. */
- if (pDbeScreenPriv->BeginIdiom)
- {
- (*pDbeScreenPriv->BeginIdiom)(client);
- }
- }
-
- return Success;
-
-} /* ProcDbeBeginIdiom() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: ProcDbeGetVisualInfo
- *
- * Description:
- *
- * This function is for processing a ProcDbeGetVisualInfo request.
- * This request returns information about which visuals support
- * double buffering.
- *
- * Return Values:
- *
- * BadDrawable - value in screen specifiers is not a valid drawable
- * Success
- *
- *****************************************************************************/
-
-static int
-ProcDbeGetVisualInfo(ClientPtr client)
-{
- REQUEST(xDbeGetVisualInfoReq);
- DbeScreenPrivPtr pDbeScreenPriv;
- xDbeGetVisualInfoReply rep;
- Drawable *drawables;
- DrawablePtr *pDrawables = NULL;
- register int i, j, n, rc;
- register int count; /* number of visual infos in reply */
- register int length; /* length of reply */
- ScreenPtr pScreen;
- XdbeScreenVisualInfo *pScrVisInfo;
-
-
- REQUEST_AT_LEAST_SIZE(xDbeGetVisualInfoReq);
-
- if (stuff->n > UINT32_MAX / sizeof(DrawablePtr))
- return BadAlloc;
- /* Make sure any specified drawables are valid. */
- if (stuff->n != 0)
- {
- if (!(pDrawables = (DrawablePtr *)malloc(stuff->n *
- sizeof(DrawablePtr))))
- {
- return BadAlloc;
- }
-
- drawables = (Drawable *)&stuff[1];
-
- for (i = 0; i < stuff->n; i++)
- {
- rc = dixLookupDrawable(pDrawables+i, drawables[i], client, 0,
- DixGetAttrAccess);
- if (rc != Success) {
- free(pDrawables);
- return rc;
- }
- }
- }
-
- count = (stuff->n == 0) ? screenInfo.numScreens : stuff->n;
- if (!(pScrVisInfo = (XdbeScreenVisualInfo *)malloc(count *
- sizeof(XdbeScreenVisualInfo))))
- {
- free(pDrawables);
-
- return BadAlloc;
- }
-
- length = 0;
-
- for (i = 0; i < count; i++)
- {
- pScreen = (stuff->n == 0) ? screenInfo.screens[i] :
- pDrawables[i]->pScreen;
- pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
-
- rc = XaceHook(XACE_SCREEN_ACCESS, client, pScreen, DixGetAttrAccess);
- if ((rc != Success) ||
- !(*pDbeScreenPriv->GetVisualInfo)(pScreen, &pScrVisInfo[i]))
- {
- /* We failed to alloc pScrVisInfo[i].visinfo. */
-
- /* Free visinfos that we allocated for previous screen infos.*/
- for (j = 0; j < i; j++)
- {
- free(pScrVisInfo[j].visinfo);
- }
-
- /* Free pDrawables if we needed to allocate it above. */
- free(pDrawables);
-
- return (rc == Success) ? BadAlloc : rc;
- }
-
- /* Account for n, number of xDbeVisInfo items in list. */
- length += sizeof(CARD32);
-
- /* Account for n xDbeVisInfo items */
- length += pScrVisInfo[i].count * sizeof(xDbeVisInfo);
- }
-
- rep.type = X_Reply;
- rep.sequenceNumber = client->sequence;
- rep.length = bytes_to_int32(length);
- rep.m = count;
-
- if (client->swapped)
- {
- swaps(&rep.sequenceNumber, n);
- swapl(&rep.length, n);
- swapl(&rep.m, n);
- }
-
- /* Send off reply. */
- WriteToClient(client, sizeof(xDbeGetVisualInfoReply), (char *)&rep);
-
- for (i = 0; i < count; i++)
- {
- CARD32 data32;
-
- /* For each screen in the reply, send off the visual info */
-
- /* Send off number of visuals. */
- data32 = (CARD32)pScrVisInfo[i].count;
-
- if (client->swapped)
- {
- swapl(&data32, n);
- }
-
- WriteToClient(client, sizeof(CARD32), (char *)&data32);
-
- /* Now send off visual info items. */
- for (j = 0; j < pScrVisInfo[i].count; j++)
- {
- xDbeVisInfo visInfo;
-
- /* Copy the data in the client data structure to a protocol
- * data structure. We will send data to the client from the
- * protocol data structure.
- */
-
- visInfo.visualID = (CARD32)pScrVisInfo[i].visinfo[j].visual;
- visInfo.depth = (CARD8) pScrVisInfo[i].visinfo[j].depth;
- visInfo.perfLevel = (CARD8) pScrVisInfo[i].visinfo[j].perflevel;
-
- if (client->swapped)
- {
- swapl(&visInfo.visualID, n);
-
- /* We do not need to swap depth and perfLevel since they are
- * already 1 byte quantities.
- */
- }
-
- /* Write visualID(32), depth(8), perfLevel(8), and pad(16). */
- WriteToClient(client, 2*sizeof(CARD32), (char *)&visInfo.visualID);
- }
- }
-
- /* Clean up memory. */
- for (i = 0; i < count; i++)
- {
- free(pScrVisInfo[i].visinfo);
- }
- free(pScrVisInfo);
-
- free(pDrawables);
-
- return Success;
-
-} /* ProcDbeGetVisualInfo() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: ProcDbeGetbackBufferAttributes
- *
- * Description:
- *
- * This function is for processing a ProcDbeGetbackBufferAttributes
- * request. This request returns information about a back buffer.
- *
- * Return Values:
- *
- * Success
- *
- *****************************************************************************/
-
-static int
-ProcDbeGetBackBufferAttributes(ClientPtr client)
-{
- REQUEST(xDbeGetBackBufferAttributesReq);
- xDbeGetBackBufferAttributesReply rep;
- DbeWindowPrivPtr pDbeWindowPriv;
- int rc, n;
-
-
- REQUEST_SIZE_MATCH(xDbeGetBackBufferAttributesReq);
-
- rc = dixLookupResourceByType((pointer *)&pDbeWindowPriv, stuff->buffer,
- dbeWindowPrivResType, client,
- DixGetAttrAccess);
- if (rc == Success)
- {
- rep.attributes = pDbeWindowPriv->pWindow->drawable.id;
- }
- else
- {
- rep.attributes = None;
- }
-
- rep.type = X_Reply;
- rep.sequenceNumber = client->sequence;
- rep.length = 0;
-
- if (client->swapped)
- {
- swaps(&rep.sequenceNumber, n);
- swapl(&rep.length, n);
- swapl(&rep.attributes, n);
- }
-
- WriteToClient(client, sizeof(xDbeGetBackBufferAttributesReply),
- (char *)&rep);
- return Success;
-
-} /* ProcDbeGetbackBufferAttributes() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: ProcDbeDispatch
- *
- * Description:
- *
- * This function dispatches DBE requests.
- *
- *****************************************************************************/
-
-static int
-ProcDbeDispatch(ClientPtr client)
-{
- REQUEST(xReq);
-
-
- switch (stuff->data)
- {
- case X_DbeGetVersion:
- return(ProcDbeGetVersion(client));
-
- case X_DbeAllocateBackBufferName:
- return(ProcDbeAllocateBackBufferName(client));
-
- case X_DbeDeallocateBackBufferName:
- return(ProcDbeDeallocateBackBufferName(client));
-
- case X_DbeSwapBuffers:
- return(ProcDbeSwapBuffers(client));
-
- case X_DbeBeginIdiom:
- return(ProcDbeBeginIdiom(client));
-
- case X_DbeEndIdiom:
- return Success;
-
- case X_DbeGetVisualInfo:
- return(ProcDbeGetVisualInfo(client));
-
- case X_DbeGetBackBufferAttributes:
- return(ProcDbeGetBackBufferAttributes(client));
-
- default:
- return BadRequest;
- }
-
-} /* ProcDbeDispatch() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: SProcDbeGetVersion
- *
- * Description:
- *
- * This function is for processing a DbeGetVersion request on a swapped
- * server. This request returns the major and minor version numbers of
- * this extension.
- *
- * Return Values:
- *
- * Success
- *
- *****************************************************************************/
-
-static int
-SProcDbeGetVersion(ClientPtr client)
-{
- REQUEST(xDbeGetVersionReq);
- register int n;
-
-
- swaps(&stuff->length, n);
- return(ProcDbeGetVersion(client));
-
-} /* SProcDbeGetVersion() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: SProcDbeAllocateBackBufferName
- *
- * Description:
- *
- * This function is for processing a DbeAllocateBackBufferName request on
- * a swapped server. This request allocates a drawable ID used to refer
- * to the back buffer of a window.
- *
- * Return Values:
- *
- * BadAlloc - server can not allocate resources
- * BadIDChoice - id is out of range for client; id is already in use
- * BadMatch - window is not an InputOutput window;
- * visual of window is not on list returned by
- * DBEGetVisualInfo;
- * BadValue - invalid swap action is specified
- * BadWindow - window is not a valid window
- * Success
- *
- *****************************************************************************/
-
-static int
-SProcDbeAllocateBackBufferName(ClientPtr client)
-{
- REQUEST(xDbeAllocateBackBufferNameReq);
- register int n;
-
- swaps(&stuff->length, n);
- REQUEST_SIZE_MATCH(xDbeAllocateBackBufferNameReq);
-
- swapl(&stuff->window, n);
- swapl(&stuff->buffer, n);
- /* stuff->swapAction is a byte. We do not need to swap this field. */
-
- return(ProcDbeAllocateBackBufferName(client));
-
-} /* SProcDbeAllocateBackBufferName() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: SProcDbeDeallocateBackBufferName
- *
- * Description:
- *
- * This function is for processing a DbeDeallocateBackBufferName request
- * on a swapped server. This request frees a drawable ID that was
- * obtained by a DbeAllocateBackBufferName request.
- *
- * Return Values:
- *
- * BadBuffer - buffer to deallocate is not associated with a window
- * Success
- *
- *****************************************************************************/
-
-static int
-SProcDbeDeallocateBackBufferName(ClientPtr client)
-{
- REQUEST (xDbeDeallocateBackBufferNameReq);
- register int n;
-
-
- swaps(&stuff->length, n);
- REQUEST_SIZE_MATCH(xDbeDeallocateBackBufferNameReq);
-
- swapl(&stuff->buffer, n);
-
- return(ProcDbeDeallocateBackBufferName(client));
-
-} /* SProcDbeDeallocateBackBufferName() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: SProcDbeSwapBuffers
- *
- * Description:
- *
- * This function is for processing a DbeSwapBuffers request on a swapped
- * server. This request swaps the buffers for all windows listed,
- * applying the appropriate swap action for each window.
- *
- * Return Values:
- *
- * BadMatch - a window in request is not double-buffered; a window in
- * request is listed more than once; all windows in request do
- * not have the same root
- * BadValue - invalid swap action is specified
- * BadWindow - a window in request is not valid
- * Success
- *
- *****************************************************************************/
-
-static int
-SProcDbeSwapBuffers(ClientPtr client)
-{
- REQUEST(xDbeSwapBuffersReq);
- register int i, n;
- xDbeSwapInfo *pSwapInfo;
-
-
- swaps(&stuff->length, n);
- REQUEST_AT_LEAST_SIZE(xDbeSwapBuffersReq);
-
- swapl(&stuff->n, n);
-
- if (stuff->n != 0)
- {
- pSwapInfo = (xDbeSwapInfo *)stuff+1;
-
- /* The swap info following the fix part of this request is a window(32)
- * followed by a 1 byte swap action and then 3 pad bytes. We only need
- * to swap the window information.
- */
- for (i = 0; i < stuff->n; i++)
- {
- swapl(&pSwapInfo->window, n);
- }
- }
-
- return(ProcDbeSwapBuffers(client));
-
-} /* SProcDbeSwapBuffers() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: SProcDbeBeginIdiom
- *
- * Description:
- *
- * This function is for processing a DbeBeginIdiom request on a swapped
- * server. This request informs the server that a complex swap will
- * immediately follow this request.
- *
- * Return Values:
- *
- * Success
- *
- *****************************************************************************/
-
-static int
-SProcDbeBeginIdiom(ClientPtr client)
-{
- REQUEST(xDbeBeginIdiomReq);
- register int n;
-
- swaps(&stuff->length, n);
- return(ProcDbeBeginIdiom(client));
-
-} /* SProcDbeBeginIdiom() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: SProcDbeGetVisualInfo
- *
- * Description:
- *
- * This function is for processing a ProcDbeGetVisualInfo request on a
- * swapped server. This request returns information about which visuals
- * support double buffering.
- *
- * Return Values:
- *
- * BadDrawable - value in screen specifiers is not a valid drawable
- * Success
- *
- *****************************************************************************/
-
-static int
-SProcDbeGetVisualInfo(ClientPtr client)
-{
- REQUEST(xDbeGetVisualInfoReq);
- register int n;
-
-
- swaps(&stuff->length, n);
- REQUEST_AT_LEAST_SIZE(xDbeGetVisualInfoReq);
-
- swapl(&stuff->n, n);
- SwapRestL(stuff);
-
- return(ProcDbeGetVisualInfo(client));
-
-} /* SProcDbeGetVisualInfo() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: SProcDbeGetbackBufferAttributes
- *
- * Description:
- *
- * This function is for processing a ProcDbeGetbackBufferAttributes
- * request on a swapped server. This request returns information about a
- * back buffer.
- *
- * Return Values:
- *
- * Success
- *
- *****************************************************************************/
-
-static int
-SProcDbeGetBackBufferAttributes(ClientPtr client)
-{
- REQUEST (xDbeGetBackBufferAttributesReq);
- register int n;
-
- swaps(&stuff->length, n);
- REQUEST_SIZE_MATCH(xDbeGetBackBufferAttributesReq);
-
- swapl(&stuff->buffer, n);
-
- return(ProcDbeGetBackBufferAttributes(client));
-
-} /* SProcDbeGetBackBufferAttributes() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: SProcDbeDispatch
- *
- * Description:
- *
- * This function dispatches DBE requests on a swapped server.
- *
- *****************************************************************************/
-
-static int
-SProcDbeDispatch(ClientPtr client)
-{
- REQUEST(xReq);
-
-
- switch (stuff->data)
- {
- case X_DbeGetVersion:
- return(SProcDbeGetVersion(client));
-
- case X_DbeAllocateBackBufferName:
- return(SProcDbeAllocateBackBufferName(client));
-
- case X_DbeDeallocateBackBufferName:
- return(SProcDbeDeallocateBackBufferName(client));
-
- case X_DbeSwapBuffers:
- return(SProcDbeSwapBuffers(client));
-
- case X_DbeBeginIdiom:
- return(SProcDbeBeginIdiom(client));
-
- case X_DbeEndIdiom:
- return Success;
-
- case X_DbeGetVisualInfo:
- return(SProcDbeGetVisualInfo(client));
-
- case X_DbeGetBackBufferAttributes:
- return(SProcDbeGetBackBufferAttributes(client));
-
- default:
- return BadRequest;
- }
-
-} /* SProcDbeDispatch() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: DbeSetupBackgroundPainter
- *
- * Description:
- *
- * This function sets up pGC to clear pixmaps.
- *
- * Return Values:
- *
- * TRUE - setup was successful
- * FALSE - the window's background state is NONE
- *
- *****************************************************************************/
-
-static Bool
-DbeSetupBackgroundPainter(WindowPtr pWin, GCPtr pGC)
-{
- ChangeGCVal gcvalues[4];
- int ts_x_origin, ts_y_origin;
- PixUnion background;
- int backgroundState;
- Mask gcmask;
-
-
- /* First take care of any ParentRelative stuff by altering the
- * tile/stipple origin to match the coordinates of the upper-left
- * corner of the first ancestor without a ParentRelative background.
- * This coordinate is, of course, negative.
- */
- ts_x_origin = ts_y_origin = 0;
- while (pWin->backgroundState == ParentRelative)
- {
- ts_x_origin -= pWin->origin.x;
- ts_y_origin -= pWin->origin.y;
-
- pWin = pWin->parent;
- }
- backgroundState = pWin->backgroundState;
- background = pWin->background;
-
- switch (backgroundState)
- {
- case BackgroundPixel:
- gcvalues[0].val = background.pixel;
- gcvalues[1].val = FillSolid;
- gcmask = GCForeground|GCFillStyle;
- break;
-
- case BackgroundPixmap:
- gcvalues[0].val = FillTiled;
- gcvalues[1].ptr = background.pixmap;
- gcvalues[2].val = ts_x_origin;
- gcvalues[3].val = ts_y_origin;
- gcmask = GCFillStyle|GCTile|GCTileStipXOrigin|GCTileStipYOrigin;
- break;
-
- default:
- /* pWin->backgroundState == None */
- return FALSE;
- }
-
- return ChangeGC(NullClient, pGC, gcmask, gcvalues) == 0;
-} /* DbeSetupBackgroundPainter() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: DbeDrawableDelete
- *
- * Description:
- *
- * This is the resource delete function for dbeDrawableResType.
- * It is registered when the drawable resource type is created in
- * DbeExtensionInit().
- *
- * To make resource deletion simple, we do not do anything in this function
- * and leave all resource deleteion to DbeWindowPrivDelete(), which will
- * eventually be called or already has been called. Deletion functions are
- * not guaranteed to be called in any particular order.
- *
- *****************************************************************************/
-static int
-DbeDrawableDelete(pointer pDrawable, XID id)
-{
- return Success;
-
-} /* DbeDrawableDelete() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: DbeWindowPrivDelete
- *
- * Description:
- *
- * This is the resource delete function for dbeWindowPrivResType.
- * It is registered when the drawable resource type is created in
- * DbeExtensionInit().
- *
- *****************************************************************************/
-static int
-DbeWindowPrivDelete(pointer pDbeWinPriv, XID id)
-{
- DbeScreenPrivPtr pDbeScreenPriv;
- DbeWindowPrivPtr pDbeWindowPriv = (DbeWindowPrivPtr)pDbeWinPriv;
- int i;
-
-
- /*
- **************************************************************************
- ** Remove the buffer ID from the ID array.
- **************************************************************************
- */
-
- /* Find the ID in the ID array. */
- i = 0;
- while ((i < pDbeWindowPriv->nBufferIDs) && (pDbeWindowPriv->IDs[i] != id))
- {
- i++;
- }
-
- if (i == pDbeWindowPriv->nBufferIDs)
- {
- /* We did not find the ID in the array. We should never get here. */
- return BadValue;
- }
-
- /* Remove the ID from the array. */
-
- if (i < (pDbeWindowPriv->nBufferIDs - 1))
- {
- /* Compress the buffer ID array, overwriting the ID in the process. */
- memmove(&pDbeWindowPriv->IDs[i], &pDbeWindowPriv->IDs[i+1],
- (pDbeWindowPriv->nBufferIDs - i - 1) * sizeof(XID));
- }
- else
- {
- /* We are removing the last ID in the array, in which case, the
- * assignement below is all that we need to do.
- */
- }
- pDbeWindowPriv->IDs[pDbeWindowPriv->nBufferIDs - 1] = DBE_FREE_ID_ELEMENT;
-
- pDbeWindowPriv->nBufferIDs--;
-
- /* If an extended array was allocated, then check to see if the remaining
- * buffer IDs will fit in the static array.
- */
-
- if ((pDbeWindowPriv->maxAvailableIDs > DBE_INIT_MAX_IDS) &&
- (pDbeWindowPriv->nBufferIDs == DBE_INIT_MAX_IDS))
- {
- /* Copy the IDs back into the static array. */
- memcpy(pDbeWindowPriv->initIDs, pDbeWindowPriv->IDs,
- DBE_INIT_MAX_IDS * sizeof(XID));
-
- /* Free the extended array; use the static array. */
- free(pDbeWindowPriv->IDs);
- pDbeWindowPriv->IDs = pDbeWindowPriv->initIDs;
- pDbeWindowPriv->maxAvailableIDs = DBE_INIT_MAX_IDS;
- }
-
-
- /*
- **************************************************************************
- ** Perform DDX level tasks.
- **************************************************************************
- */
-
- pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW_PRIV(
- (DbeWindowPrivPtr)pDbeWindowPriv);
- (*pDbeScreenPriv->WinPrivDelete)((DbeWindowPrivPtr)pDbeWindowPriv, id);
-
-
- /*
- **************************************************************************
- ** Perform miscellaneous tasks if this is the last buffer associated
- ** with the window.
- **************************************************************************
- */
-
- if (pDbeWindowPriv->nBufferIDs == 0)
- {
- /* Reset the DBE window priv pointer. */
- dixSetPrivate(&pDbeWindowPriv->pWindow->devPrivates, dbeWindowPrivKey,
- NULL);
-
- /* We are done with the window priv. */
- dixFreeObjectWithPrivates(pDbeWindowPriv, PRIVATE_DBE_WINDOW);
- }
-
- return Success;
-
-} /* DbeWindowPrivDelete() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: DbeResetProc
- *
- * Description:
- *
- * This routine is called at the end of every server generation.
- * It deallocates any memory reserved for the extension and performs any
- * other tasks related to shutting down the extension.
- *
- *****************************************************************************/
-static void
-DbeResetProc(ExtensionEntry *extEntry)
-{
- int i;
- ScreenPtr pScreen;
- DbeScreenPrivPtr pDbeScreenPriv;
-
- for (i = 0; i < screenInfo.numScreens; i++)
- {
- pScreen = screenInfo.screens[i];
- pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
-
- if (pDbeScreenPriv)
- {
- /* Unwrap DestroyWindow, which was wrapped in DbeExtensionInit().*/
- pScreen->DestroyWindow = pDbeScreenPriv->DestroyWindow;
-
- if (pDbeScreenPriv->ResetProc)
- (*pDbeScreenPriv->ResetProc)(pScreen);
-
- free(pDbeScreenPriv);
- }
- }
-} /* DbeResetProc() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: DbeDestroyWindow
- *
- * Description:
- *
- * This is the wrapper for pScreen->DestroyWindow.
- * This function frees buffer resources for a window before it is
- * destroyed.
- *
- *****************************************************************************/
-
-static Bool
-DbeDestroyWindow(WindowPtr pWin)
-{
- DbeScreenPrivPtr pDbeScreenPriv;
- DbeWindowPrivPtr pDbeWindowPriv;
- ScreenPtr pScreen;
- Bool ret;
-
-
- /*
- **************************************************************************
- ** 1. Unwrap the member routine.
- **************************************************************************
- */
-
- pScreen = pWin->drawable.pScreen;
- pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
- pScreen->DestroyWindow = pDbeScreenPriv->DestroyWindow;
-
- /*
- **************************************************************************
- ** 2. Do any work necessary before the member routine is called.
- **
- ** Call the window priv delete function for all buffer IDs associated
- ** with this window.
- **************************************************************************
- */
-
- if ((pDbeWindowPriv = DBE_WINDOW_PRIV(pWin)))
- {
- while (pDbeWindowPriv)
- {
- /* *DbeWinPrivDelete() will free the window private and set it to
- * NULL if there are no more buffer IDs associated with this
- * window.
- */
- FreeResource(pDbeWindowPriv->IDs[0], RT_NONE);
- pDbeWindowPriv = DBE_WINDOW_PRIV(pWin);
- }
- }
-
- /*
- **************************************************************************
- ** 3. Call the member routine, saving its result if necessary.
- **************************************************************************
- */
-
- ret = (*pScreen->DestroyWindow)(pWin);
-
- /*
- **************************************************************************
- ** 4. Rewrap the member routine, restoring the wrapper value first in case
- ** the wrapper (or something that it wrapped) change this value.
- **************************************************************************
- */
-
- pDbeScreenPriv->DestroyWindow = pScreen->DestroyWindow;
- pScreen->DestroyWindow = DbeDestroyWindow;
-
- /*
- **************************************************************************
- ** 5. Do any work necessary after the member routine has been called.
- **
- ** In this case we do not need to do anything.
- **************************************************************************
- */
-
- return ret;
-
-} /* DbeDestroyWindow() */
-
-
-/******************************************************************************
- *
- * DBE DIX Procedure: DbeExtensionInit
- *
- * Description:
- *
- * Called from InitExtensions in main()
- *
- *****************************************************************************/
-
-void
-DbeExtensionInit(void)
-{
- ExtensionEntry *extEntry;
- register int i, j;
- ScreenPtr pScreen = NULL;
- DbeScreenPrivPtr pDbeScreenPriv;
- int nStubbedScreens = 0;
- Bool ddxInitSuccess;
-
-#ifdef PANORAMIX
- if(!noPanoramiXExtension) return;
-#endif
-
- /* Create the resource types. */
- dbeDrawableResType =
- CreateNewResourceType(DbeDrawableDelete, "dbeDrawable");
- if (!dbeDrawableResType)
- return;
- dbeDrawableResType |= RC_DRAWABLE;
-
- dbeWindowPrivResType =
- CreateNewResourceType(DbeWindowPrivDelete, "dbeWindow");
- if (!dbeWindowPrivResType)
- return;
-
- if (!dixRegisterPrivateKey(&dbeScreenPrivKeyRec, PRIVATE_SCREEN, 0))
- return;
-
- if (!dixRegisterPrivateKey(&dbeWindowPrivKeyRec, PRIVATE_WINDOW, 0))
- return;
-
- for (i = 0; i < screenInfo.numScreens; i++)
- {
- /* For each screen, set up DBE screen privates and init DIX and DDX
- * interface.
- */
-
- pScreen = screenInfo.screens[i];
-
- if (!(pDbeScreenPriv = malloc (sizeof (DbeScreenPrivRec))))
- {
- /* If we can not alloc a window or screen private,
- * then free any privates that we already alloc'ed and return
- */
-
- for (j = 0; j < i; j++)
- {
- free(dixLookupPrivate(&screenInfo.screens[j]->devPrivates,
- dbeScreenPrivKey));
- dixSetPrivate(&screenInfo.screens[j]->devPrivates,
- dbeScreenPrivKey, NULL);
- }
- return;
- }
-
- dixSetPrivate(&pScreen->devPrivates, dbeScreenPrivKey, pDbeScreenPriv);
-
- {
- /* We don't have DDX support for DBE anymore */
-
-#ifndef DISABLE_MI_DBE_BY_DEFAULT
- /* Setup DIX. */
- pDbeScreenPriv->SetupBackgroundPainter = DbeSetupBackgroundPainter;
-
- /* Setup DDX. */
- ddxInitSuccess = miDbeInit(pScreen, pDbeScreenPriv);
-
- /* DDX DBE initialization may have the side affect of
- * reallocating pDbeScreenPriv, so we need to update it.
- */
- pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
-
- if (ddxInitSuccess)
- {
- /* Wrap DestroyWindow. The DDX initialization function
- * already wrapped PositionWindow for us.
- */
-
- pDbeScreenPriv->DestroyWindow = pScreen->DestroyWindow;
- pScreen->DestroyWindow = DbeDestroyWindow;
- }
- else
- {
- /* DDX initialization failed. Stub the screen. */
- DbeStubScreen(pDbeScreenPriv, &nStubbedScreens);
- }
-#else
- DbeStubScreen(pDbeScreenPriv, &nStubbedScreens);
-#endif
-
- }
-
- } /* for (i = 0; i < screenInfo.numScreens; i++) */
-
-
- if (nStubbedScreens == screenInfo.numScreens)
- {
- /* All screens stubbed. Clean up and return. */
-
- for (i = 0; i < screenInfo.numScreens; i++)
- {
- free(dixLookupPrivate(&screenInfo.screens[i]->devPrivates,
- dbeScreenPrivKey));
- dixSetPrivate(&pScreen->devPrivates, dbeScreenPrivKey, NULL);
- }
- return;
- }
-
-
- /* Now add the extension. */
- extEntry = AddExtension(DBE_PROTOCOL_NAME, DbeNumberEvents,
- DbeNumberErrors, ProcDbeDispatch, SProcDbeDispatch,
- DbeResetProc, StandardMinorOpcode);
-
- dbeErrorBase = extEntry->errorBase;
- SetResourceTypeErrorValue(dbeWindowPrivResType, dbeErrorBase + DbeBadBuffer);
- SetResourceTypeErrorValue(dbeDrawableResType, dbeErrorBase + DbeBadBuffer);
-
-} /* DbeExtensionInit() */
-
+/******************************************************************************
+ *
+ * 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.
+ *
+ * DIX DBE code
+ *
+ *****************************************************************************/
+
+
+/* INCLUDES */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <string.h>
+#if HAVE_STDINT_H
+#include <stdint.h>
+#elif !defined(UINT32_MAX)
+#define UINT32_MAX 0xffffffffU
+#endif
+
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include "scrnintstr.h"
+#include "extnsionst.h"
+#include "gcstruct.h"
+#include "dixstruct.h"
+#define NEED_DBE_PROTOCOL
+#include "dbestruct.h"
+#include "midbe.h"
+#include "xace.h"
+
+/* GLOBALS */
+
+/* These are globals for use by DDX */
+DevPrivateKeyRec dbeScreenPrivKeyRec;
+DevPrivateKeyRec dbeWindowPrivKeyRec;
+
+/* These are globals for use by DDX */
+RESTYPE dbeDrawableResType;
+RESTYPE dbeWindowPrivResType;
+
+/* Used to generate DBE's BadBuffer error. */
+static int dbeErrorBase;
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: DbeStubScreen
+ *
+ * Description:
+ *
+ * This is function stubs the function pointers in the given DBE screen
+ * private and increments the number of stubbed screens.
+ *
+ *****************************************************************************/
+
+static void
+DbeStubScreen(DbeScreenPrivPtr pDbeScreenPriv, int *nStubbedScreens)
+{
+ /* Stub DIX. */
+ pDbeScreenPriv->SetupBackgroundPainter = NULL;
+
+ /* Do not unwrap PositionWindow nor DestroyWindow. If the DDX
+ * initialization function failed, we assume that it did not wrap
+ * PositionWindow. Also, DestroyWindow is only wrapped if the DDX
+ * initialization function succeeded.
+ */
+
+ /* Stub DDX. */
+ pDbeScreenPriv->GetVisualInfo = NULL;
+ pDbeScreenPriv->AllocBackBufferName = NULL;
+ pDbeScreenPriv->SwapBuffers = NULL;
+ pDbeScreenPriv->BeginIdiom = NULL;
+ pDbeScreenPriv->EndIdiom = NULL;
+ pDbeScreenPriv->WinPrivDelete = NULL;
+ pDbeScreenPriv->ResetProc = NULL;
+
+ (*nStubbedScreens)++;
+
+} /* DbeStubScreen() */
+
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: ProcDbeGetVersion
+ *
+ * Description:
+ *
+ * This function is for processing a DbeGetVersion request.
+ * This request returns the major and minor version numbers of this
+ * extension.
+ *
+ * Return Values:
+ *
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+ProcDbeGetVersion(ClientPtr client)
+{
+ /* REQUEST(xDbeGetVersionReq); */
+ xDbeGetVersionReply rep;
+ register int n;
+
+
+ REQUEST_SIZE_MATCH(xDbeGetVersionReq);
+
+ rep.type = X_Reply;
+ rep.length = 0;
+ rep.sequenceNumber = client->sequence;
+ rep.majorVersion = DBE_MAJOR_VERSION;
+ rep.minorVersion = DBE_MINOR_VERSION;
+
+ if (client->swapped)
+ {
+ swaps(&rep.sequenceNumber, n);
+ }
+
+ WriteToClient(client, sizeof(xDbeGetVersionReply), (char *)&rep);
+
+ return Success;
+
+} /* ProcDbeGetVersion() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: ProcDbeAllocateBackBufferName
+ *
+ * Description:
+ *
+ * This function is for processing a DbeAllocateBackBufferName request.
+ * This request allocates a drawable ID used to refer to the back buffer
+ * of a window.
+ *
+ * Return Values:
+ *
+ * BadAlloc - server can not allocate resources
+ * BadIDChoice - id is out of range for client; id is already in use
+ * BadMatch - window is not an InputOutput window;
+ * visual of window is not on list returned by
+ * DBEGetVisualInfo;
+ * BadValue - invalid swap action is specified
+ * BadWindow - window is not a valid window
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+ProcDbeAllocateBackBufferName(ClientPtr client)
+{
+ REQUEST(xDbeAllocateBackBufferNameReq);
+ WindowPtr pWin;
+ DbeScreenPrivPtr pDbeScreenPriv;
+ DbeWindowPrivPtr pDbeWindowPriv;
+ XdbeScreenVisualInfo scrVisInfo;
+ register int i;
+ Bool visualMatched = FALSE;
+ xDbeSwapAction swapAction;
+ VisualID visual;
+ int status;
+ int add_index;
+
+
+ REQUEST_SIZE_MATCH(xDbeAllocateBackBufferNameReq);
+
+ /* The window must be valid. */
+ status = dixLookupWindow(&pWin, stuff->window, client, DixManageAccess);
+ if (status != Success)
+ return status;
+
+ /* The window must be InputOutput. */
+ if (pWin->drawable.class != InputOutput)
+ {
+ return BadMatch;
+ }
+
+ /* The swap action must be valid. */
+ swapAction = stuff->swapAction; /* use local var for performance. */
+ if ((swapAction != XdbeUndefined ) &&
+ (swapAction != XdbeBackground) &&
+ (swapAction != XdbeUntouched ) &&
+ (swapAction != XdbeCopied ))
+ {
+ return BadValue;
+ }
+
+ /* The id must be in range and not already in use. */
+ LEGAL_NEW_RESOURCE(stuff->buffer, client);
+
+ /* The visual of the window must be in the list returned by
+ * GetVisualInfo.
+ */
+ pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW(pWin);
+ if (!pDbeScreenPriv->GetVisualInfo)
+ return BadMatch; /* screen doesn't support double buffering */
+
+ if (!(*pDbeScreenPriv->GetVisualInfo)(pWin->drawable.pScreen, &scrVisInfo))
+ {
+ /* GetVisualInfo() failed to allocate visual info data. */
+ return BadAlloc;
+ }
+
+ /* See if the window's visual is on the list. */
+ visual = wVisual(pWin);
+ for (i = 0; (i < scrVisInfo.count) && !visualMatched; i++)
+ {
+ if (scrVisInfo.visinfo[i].visual == visual)
+ {
+ visualMatched = TRUE;
+ }
+ }
+
+ /* Free what was allocated by the GetVisualInfo() call above. */
+ free(scrVisInfo.visinfo);
+
+ if (!visualMatched)
+ {
+ return BadMatch;
+ }
+
+ if ((pDbeWindowPriv = DBE_WINDOW_PRIV(pWin)) == NULL)
+ {
+ /* There is no buffer associated with the window.
+ * Allocate a window priv.
+ */
+
+ pDbeWindowPriv = dixAllocateObjectWithPrivates(DbeWindowPrivRec, PRIVATE_DBE_WINDOW);
+ if (!pDbeWindowPriv)
+ return BadAlloc;
+
+ /* Fill out window priv information. */
+ pDbeWindowPriv->pWindow = pWin;
+ pDbeWindowPriv->width = pWin->drawable.width;
+ pDbeWindowPriv->height = pWin->drawable.height;
+ pDbeWindowPriv->x = pWin->drawable.x;
+ pDbeWindowPriv->y = pWin->drawable.y;
+ pDbeWindowPriv->nBufferIDs = 0;
+
+ /* Set the buffer ID array pointer to the initial (static) array). */
+ pDbeWindowPriv->IDs = pDbeWindowPriv->initIDs;
+
+ /* Initialize the buffer ID list. */
+ pDbeWindowPriv->maxAvailableIDs = DBE_INIT_MAX_IDS;
+ pDbeWindowPriv->IDs[0] = stuff->buffer;
+
+ add_index = 0;
+ for (i = 0; i < DBE_INIT_MAX_IDS; i++)
+ {
+ pDbeWindowPriv->IDs[i] = DBE_FREE_ID_ELEMENT;
+ }
+
+ /* Actually connect the window priv to the window. */
+ dixSetPrivate(&pWin->devPrivates, dbeWindowPrivKey, pDbeWindowPriv);
+
+ } /* if -- There is no buffer associated with the window. */
+
+ else
+ {
+ /* A buffer is already associated with the window.
+ * Add the new buffer ID to the array, reallocating the array memory
+ * if necessary.
+ */
+
+ /* Determine if there is a free element in the ID array. */
+ for (i = 0; i < pDbeWindowPriv->maxAvailableIDs; i++)
+ {
+ if (pDbeWindowPriv->IDs[i] == DBE_FREE_ID_ELEMENT)
+ {
+ /* There is still room in the ID array. */
+ break;
+ }
+ }
+
+ if (i == pDbeWindowPriv->maxAvailableIDs)
+ {
+ /* No more room in the ID array -- reallocate another array. */
+ XID *pIDs;
+
+ /* Setup an array pointer for the realloc operation below. */
+ if (pDbeWindowPriv->maxAvailableIDs == DBE_INIT_MAX_IDS)
+ {
+ /* We will malloc a new array. */
+ pIDs = NULL;
+ }
+ else
+ {
+ /* We will realloc a new array. */
+ pIDs = pDbeWindowPriv->IDs;
+ }
+
+ /* malloc/realloc a new array and initialize all elements to 0. */
+ pDbeWindowPriv->IDs = (XID *)realloc(pIDs,
+ (pDbeWindowPriv->maxAvailableIDs+DBE_INCR_MAX_IDS)*sizeof(XID));
+ if (!pDbeWindowPriv->IDs)
+ {
+ return BadAlloc;
+ }
+ memset(&pDbeWindowPriv->IDs[pDbeWindowPriv->nBufferIDs], 0,
+ (pDbeWindowPriv->maxAvailableIDs + DBE_INCR_MAX_IDS -
+ pDbeWindowPriv->nBufferIDs) * sizeof(XID));
+
+ if (pDbeWindowPriv->maxAvailableIDs == DBE_INIT_MAX_IDS)
+ {
+ /* We just went from using the initial (static) array to a
+ * newly allocated array. Copy the IDs from the initial array
+ * to the new array.
+ */
+ memcpy(pDbeWindowPriv->IDs, pDbeWindowPriv->initIDs,
+ DBE_INIT_MAX_IDS * sizeof(XID));
+ }
+
+ pDbeWindowPriv->maxAvailableIDs += DBE_INCR_MAX_IDS;
+ }
+
+ add_index = i;
+
+ } /* else -- A buffer is already associated with the window. */
+
+
+ /* Call the DDX routine to allocate the back buffer. */
+ status = (*pDbeScreenPriv->AllocBackBufferName)(pWin, stuff->buffer,
+ stuff->swapAction);
+
+ if (status == Success)
+ {
+ pDbeWindowPriv->IDs[add_index] = stuff->buffer;
+ if (!AddResource(stuff->buffer, dbeWindowPrivResType,
+ (pointer)pDbeWindowPriv))
+ {
+ pDbeWindowPriv->IDs[add_index] = DBE_FREE_ID_ELEMENT;
+
+ if (pDbeWindowPriv->nBufferIDs == 0) {
+ status = BadAlloc;
+ goto out_free;
+ }
+ }
+ } else {
+ /* The DDX buffer allocation routine failed for the first buffer of
+ * this window.
+ */
+ if (pDbeWindowPriv->nBufferIDs == 0) {
+ goto out_free;
+ }
+ }
+
+ /* Increment the number of buffers (XIDs) associated with this window. */
+ pDbeWindowPriv->nBufferIDs++;
+
+ /* Set swap action on all calls. */
+ pDbeWindowPriv->swapAction = stuff->swapAction;
+
+ return status;
+
+out_free:
+ dixSetPrivate(&pWin->devPrivates, dbeWindowPrivKey, NULL);
+ free(pDbeWindowPriv);
+ return status;
+
+} /* ProcDbeAllocateBackBufferName() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: ProcDbeDeallocateBackBufferName
+ *
+ * Description:
+ *
+ * This function is for processing a DbeDeallocateBackBufferName request.
+ * This request frees a drawable ID that was obtained by a
+ * DbeAllocateBackBufferName request.
+ *
+ * Return Values:
+ *
+ * BadBuffer - buffer to deallocate is not associated with a window
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+ProcDbeDeallocateBackBufferName(ClientPtr client)
+{
+ REQUEST(xDbeDeallocateBackBufferNameReq);
+ DbeWindowPrivPtr pDbeWindowPriv;
+ int rc, i;
+ pointer val;
+
+
+ REQUEST_SIZE_MATCH(xDbeDeallocateBackBufferNameReq);
+
+ /* Buffer name must be valid */
+ rc = dixLookupResourceByType((pointer *)&pDbeWindowPriv, stuff->buffer,
+ dbeWindowPrivResType, client,
+ DixDestroyAccess);
+ if (rc != Success)
+ return rc;
+
+ rc = dixLookupResourceByType(&val, stuff->buffer, dbeDrawableResType,
+ client, DixDestroyAccess);
+ if (rc != Success)
+ return rc;
+
+ /* Make sure that the id is valid for the window.
+ * This is paranoid code since we already looked up the ID by type
+ * above.
+ */
+
+ for (i = 0; i < pDbeWindowPriv->nBufferIDs; i++)
+ {
+ /* Loop through the ID list to find the ID. */
+ if (pDbeWindowPriv->IDs[i] == stuff->buffer)
+ {
+ break;
+ }
+ }
+
+ if (i == pDbeWindowPriv->nBufferIDs)
+ {
+ /* We did not find the ID in the ID list. */
+ client->errorValue = stuff->buffer;
+ return dbeErrorBase + DbeBadBuffer;
+ }
+
+ FreeResource(stuff->buffer, RT_NONE);
+
+ return Success;
+
+} /* ProcDbeDeallocateBackBufferName() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: ProcDbeSwapBuffers
+ *
+ * Description:
+ *
+ * This function is for processing a DbeSwapBuffers request.
+ * This request swaps the buffers for all windows listed, applying the
+ * appropriate swap action for each window.
+ *
+ * Return Values:
+ *
+ * BadAlloc - local allocation failed; this return value is not defined
+ * by the protocol
+ * BadMatch - a window in request is not double-buffered; a window in
+ * request is listed more than once
+ * BadValue - invalid swap action is specified; no swap action is
+ * specified
+ * BadWindow - a window in request is not valid
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+ProcDbeSwapBuffers(ClientPtr client)
+{
+ REQUEST(xDbeSwapBuffersReq);
+ WindowPtr pWin;
+ DbeScreenPrivPtr pDbeScreenPriv;
+ DbeSwapInfoPtr swapInfo;
+ xDbeSwapInfo *dbeSwapInfo;
+ int error;
+ register int i, j;
+ int nStuff;
+
+
+ REQUEST_AT_LEAST_SIZE(xDbeSwapBuffersReq);
+ nStuff = stuff->n; /* use local variable for performance. */
+
+ if (nStuff == 0)
+ {
+ return Success;
+ }
+
+ if (nStuff > UINT32_MAX / sizeof(DbeSwapInfoRec))
+ return BadAlloc;
+
+ /* Get to the swap info appended to the end of the request. */
+ dbeSwapInfo = (xDbeSwapInfo *)&stuff[1];
+
+ /* Allocate array to record swap information. */
+ swapInfo = (DbeSwapInfoPtr)malloc(nStuff * sizeof(DbeSwapInfoRec));
+ if (swapInfo == NULL)
+ {
+ return BadAlloc;
+ }
+
+
+ for (i = 0; i < nStuff; i++)
+ {
+ /* Check all windows to swap. */
+
+ /* Each window must be a valid window - BadWindow. */
+ error = dixLookupWindow(&pWin, dbeSwapInfo[i].window, client,
+ DixWriteAccess);
+ if (error != Success) {
+ free(swapInfo);
+ return error;
+ }
+
+ /* Each window must be double-buffered - BadMatch. */
+ if (DBE_WINDOW_PRIV(pWin) == NULL)
+ {
+ free(swapInfo);
+ return BadMatch;
+ }
+
+ /* Each window must only be specified once - BadMatch. */
+ for (j = i + 1; j < nStuff; j++)
+ {
+ if (dbeSwapInfo[i].window == dbeSwapInfo[j].window)
+ {
+ free(swapInfo);
+ return BadMatch;
+ }
+ }
+
+ /* Each swap action must be valid - BadValue. */
+ if ((dbeSwapInfo[i].swapAction != XdbeUndefined ) &&
+ (dbeSwapInfo[i].swapAction != XdbeBackground) &&
+ (dbeSwapInfo[i].swapAction != XdbeUntouched ) &&
+ (dbeSwapInfo[i].swapAction != XdbeCopied ))
+ {
+ free(swapInfo);
+ return BadValue;
+ }
+
+ /* Everything checks out OK. Fill in the swap info array. */
+ swapInfo[i].pWindow = pWin;
+ swapInfo[i].swapAction = dbeSwapInfo[i].swapAction;
+
+ } /* for (i = 0; i < nStuff; i++) */
+
+
+ /* Call the DDX routine to perform the swap(s). The DDX routine should
+ * scan the swap list (swap info), swap any buffers that it knows how to
+ * handle, delete them from the list, and update nStuff to indicate how
+ * many windows it did not handle.
+ *
+ * This scheme allows a range of sophistication in the DDX SwapBuffers()
+ * implementation. Naive implementations could just swap the first buffer
+ * in the list, move the last buffer to the front, decrement nStuff, and
+ * return. The next level of sophistication could be to scan the whole
+ * list for windows on the same screen. Up another level, the DDX routine
+ * could deal with cross-screen synchronization.
+ */
+
+ while (nStuff > 0)
+ {
+ pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW(swapInfo[0].pWindow);
+ error = (*pDbeScreenPriv->SwapBuffers)(client, &nStuff, swapInfo);
+ if (error != Success)
+ {
+ free(swapInfo);
+ return error;
+ }
+ }
+
+ free(swapInfo);
+ return Success;
+
+} /* ProcDbeSwapBuffers() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: ProcDbeBeginIdiom
+ *
+ * Description:
+ *
+ * This function is for processing a DbeBeginIdiom request.
+ * This request informs the server that a complex swap will immediately
+ * follow this request.
+ *
+ * Return Values:
+ *
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+ProcDbeBeginIdiom(ClientPtr client)
+{
+ /* REQUEST(xDbeBeginIdiomReq); */
+ DbeScreenPrivPtr pDbeScreenPriv;
+ register int i;
+
+
+ REQUEST_SIZE_MATCH(xDbeBeginIdiomReq);
+
+ for (i = 0; i < screenInfo.numScreens; i++)
+ {
+ pDbeScreenPriv = DBE_SCREEN_PRIV(screenInfo.screens[i]);
+
+ /* Call the DDX begin idiom procedure if there is one. */
+ if (pDbeScreenPriv->BeginIdiom)
+ {
+ (*pDbeScreenPriv->BeginIdiom)(client);
+ }
+ }
+
+ return Success;
+
+} /* ProcDbeBeginIdiom() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: ProcDbeGetVisualInfo
+ *
+ * Description:
+ *
+ * This function is for processing a ProcDbeGetVisualInfo request.
+ * This request returns information about which visuals support
+ * double buffering.
+ *
+ * Return Values:
+ *
+ * BadDrawable - value in screen specifiers is not a valid drawable
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+ProcDbeGetVisualInfo(ClientPtr client)
+{
+ REQUEST(xDbeGetVisualInfoReq);
+ DbeScreenPrivPtr pDbeScreenPriv;
+ xDbeGetVisualInfoReply rep;
+ Drawable *drawables;
+ DrawablePtr *pDrawables = NULL;
+ register int i, j, n, rc;
+ register int count; /* number of visual infos in reply */
+ register int length; /* length of reply */
+ ScreenPtr pScreen;
+ XdbeScreenVisualInfo *pScrVisInfo;
+
+
+ REQUEST_AT_LEAST_SIZE(xDbeGetVisualInfoReq);
+
+ if (stuff->n > UINT32_MAX / sizeof(DrawablePtr))
+ return BadAlloc;
+ /* Make sure any specified drawables are valid. */
+ if (stuff->n != 0)
+ {
+ if (!(pDrawables = (DrawablePtr *)malloc(stuff->n *
+ sizeof(DrawablePtr))))
+ {
+ return BadAlloc;
+ }
+
+ drawables = (Drawable *)&stuff[1];
+
+ for (i = 0; i < stuff->n; i++)
+ {
+ rc = dixLookupDrawable(pDrawables+i, drawables[i], client, 0,
+ DixGetAttrAccess);
+ if (rc != Success) {
+ free(pDrawables);
+ return rc;
+ }
+ }
+ }
+
+ count = (stuff->n == 0) ? screenInfo.numScreens : stuff->n;
+ if (!(pScrVisInfo = calloc(count, sizeof(XdbeScreenVisualInfo))))
+ {
+ free(pDrawables);
+
+ return BadAlloc;
+ }
+
+ length = 0;
+
+ for (i = 0; i < count; i++)
+ {
+ pScreen = (stuff->n == 0) ? screenInfo.screens[i] :
+ pDrawables[i]->pScreen;
+ pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
+
+ rc = XaceHook(XACE_SCREEN_ACCESS, client, pScreen, DixGetAttrAccess);
+ if (rc != Success)
+ goto freeScrVisInfo;
+
+ if (!(*pDbeScreenPriv->GetVisualInfo)(pScreen, &pScrVisInfo[i]))
+ {
+ /* We failed to alloc pScrVisInfo[i].visinfo. */
+ rc = BadAlloc;
+
+ /* Free visinfos that we allocated for previous screen infos.*/
+ goto freeScrVisInfo;
+ }
+
+ /* Account for n, number of xDbeVisInfo items in list. */
+ length += sizeof(CARD32);
+
+ /* Account for n xDbeVisInfo items */
+ length += pScrVisInfo[i].count * sizeof(xDbeVisInfo);
+ }
+
+ rep.type = X_Reply;
+ rep.sequenceNumber = client->sequence;
+ rep.length = bytes_to_int32(length);
+ rep.m = count;
+
+ if (client->swapped)
+ {
+ swaps(&rep.sequenceNumber, n);
+ swapl(&rep.length, n);
+ swapl(&rep.m, n);
+ }
+
+ /* Send off reply. */
+ WriteToClient(client, sizeof(xDbeGetVisualInfoReply), (char *)&rep);
+
+ for (i = 0; i < count; i++)
+ {
+ CARD32 data32;
+
+ /* For each screen in the reply, send off the visual info */
+
+ /* Send off number of visuals. */
+ data32 = (CARD32)pScrVisInfo[i].count;
+
+ if (client->swapped)
+ {
+ swapl(&data32, n);
+ }
+
+ WriteToClient(client, sizeof(CARD32), (char *)&data32);
+
+ /* Now send off visual info items. */
+ for (j = 0; j < pScrVisInfo[i].count; j++)
+ {
+ xDbeVisInfo visInfo;
+
+ /* Copy the data in the client data structure to a protocol
+ * data structure. We will send data to the client from the
+ * protocol data structure.
+ */
+
+ visInfo.visualID = (CARD32)pScrVisInfo[i].visinfo[j].visual;
+ visInfo.depth = (CARD8) pScrVisInfo[i].visinfo[j].depth;
+ visInfo.perfLevel = (CARD8) pScrVisInfo[i].visinfo[j].perflevel;
+
+ if (client->swapped)
+ {
+ swapl(&visInfo.visualID, n);
+
+ /* We do not need to swap depth and perfLevel since they are
+ * already 1 byte quantities.
+ */
+ }
+
+ /* Write visualID(32), depth(8), perfLevel(8), and pad(16). */
+ WriteToClient(client, 2*sizeof(CARD32), (char *)&visInfo.visualID);
+ }
+ }
+
+ rc = Success;
+
+ freeScrVisInfo:
+ /* Clean up memory. */
+ for (i = 0; i < count; i++)
+ {
+ free(pScrVisInfo[i].visinfo);
+ }
+ free(pScrVisInfo);
+
+ free(pDrawables);
+
+ return rc;
+
+} /* ProcDbeGetVisualInfo() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: ProcDbeGetbackBufferAttributes
+ *
+ * Description:
+ *
+ * This function is for processing a ProcDbeGetbackBufferAttributes
+ * request. This request returns information about a back buffer.
+ *
+ * Return Values:
+ *
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+ProcDbeGetBackBufferAttributes(ClientPtr client)
+{
+ REQUEST(xDbeGetBackBufferAttributesReq);
+ xDbeGetBackBufferAttributesReply rep;
+ DbeWindowPrivPtr pDbeWindowPriv;
+ int rc, n;
+
+
+ REQUEST_SIZE_MATCH(xDbeGetBackBufferAttributesReq);
+
+ rc = dixLookupResourceByType((pointer *)&pDbeWindowPriv, stuff->buffer,
+ dbeWindowPrivResType, client,
+ DixGetAttrAccess);
+ if (rc == Success)
+ {
+ rep.attributes = pDbeWindowPriv->pWindow->drawable.id;
+ }
+ else
+ {
+ rep.attributes = None;
+ }
+
+ rep.type = X_Reply;
+ rep.sequenceNumber = client->sequence;
+ rep.length = 0;
+
+ if (client->swapped)
+ {
+ swaps(&rep.sequenceNumber, n);
+ swapl(&rep.length, n);
+ swapl(&rep.attributes, n);
+ }
+
+ WriteToClient(client, sizeof(xDbeGetBackBufferAttributesReply),
+ (char *)&rep);
+ return Success;
+
+} /* ProcDbeGetbackBufferAttributes() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: ProcDbeDispatch
+ *
+ * Description:
+ *
+ * This function dispatches DBE requests.
+ *
+ *****************************************************************************/
+
+static int
+ProcDbeDispatch(ClientPtr client)
+{
+ REQUEST(xReq);
+
+
+ switch (stuff->data)
+ {
+ case X_DbeGetVersion:
+ return(ProcDbeGetVersion(client));
+
+ case X_DbeAllocateBackBufferName:
+ return(ProcDbeAllocateBackBufferName(client));
+
+ case X_DbeDeallocateBackBufferName:
+ return(ProcDbeDeallocateBackBufferName(client));
+
+ case X_DbeSwapBuffers:
+ return(ProcDbeSwapBuffers(client));
+
+ case X_DbeBeginIdiom:
+ return(ProcDbeBeginIdiom(client));
+
+ case X_DbeEndIdiom:
+ return Success;
+
+ case X_DbeGetVisualInfo:
+ return(ProcDbeGetVisualInfo(client));
+
+ case X_DbeGetBackBufferAttributes:
+ return(ProcDbeGetBackBufferAttributes(client));
+
+ default:
+ return BadRequest;
+ }
+
+} /* ProcDbeDispatch() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: SProcDbeGetVersion
+ *
+ * Description:
+ *
+ * This function is for processing a DbeGetVersion request on a swapped
+ * server. This request returns the major and minor version numbers of
+ * this extension.
+ *
+ * Return Values:
+ *
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+SProcDbeGetVersion(ClientPtr client)
+{
+ REQUEST(xDbeGetVersionReq);
+ register int n;
+
+
+ swaps(&stuff->length, n);
+ return(ProcDbeGetVersion(client));
+
+} /* SProcDbeGetVersion() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: SProcDbeAllocateBackBufferName
+ *
+ * Description:
+ *
+ * This function is for processing a DbeAllocateBackBufferName request on
+ * a swapped server. This request allocates a drawable ID used to refer
+ * to the back buffer of a window.
+ *
+ * Return Values:
+ *
+ * BadAlloc - server can not allocate resources
+ * BadIDChoice - id is out of range for client; id is already in use
+ * BadMatch - window is not an InputOutput window;
+ * visual of window is not on list returned by
+ * DBEGetVisualInfo;
+ * BadValue - invalid swap action is specified
+ * BadWindow - window is not a valid window
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+SProcDbeAllocateBackBufferName(ClientPtr client)
+{
+ REQUEST(xDbeAllocateBackBufferNameReq);
+ register int n;
+
+ swaps(&stuff->length, n);
+ REQUEST_SIZE_MATCH(xDbeAllocateBackBufferNameReq);
+
+ swapl(&stuff->window, n);
+ swapl(&stuff->buffer, n);
+ /* stuff->swapAction is a byte. We do not need to swap this field. */
+
+ return(ProcDbeAllocateBackBufferName(client));
+
+} /* SProcDbeAllocateBackBufferName() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: SProcDbeDeallocateBackBufferName
+ *
+ * Description:
+ *
+ * This function is for processing a DbeDeallocateBackBufferName request
+ * on a swapped server. This request frees a drawable ID that was
+ * obtained by a DbeAllocateBackBufferName request.
+ *
+ * Return Values:
+ *
+ * BadBuffer - buffer to deallocate is not associated with a window
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+SProcDbeDeallocateBackBufferName(ClientPtr client)
+{
+ REQUEST (xDbeDeallocateBackBufferNameReq);
+ register int n;
+
+
+ swaps(&stuff->length, n);
+ REQUEST_SIZE_MATCH(xDbeDeallocateBackBufferNameReq);
+
+ swapl(&stuff->buffer, n);
+
+ return(ProcDbeDeallocateBackBufferName(client));
+
+} /* SProcDbeDeallocateBackBufferName() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: SProcDbeSwapBuffers
+ *
+ * Description:
+ *
+ * This function is for processing a DbeSwapBuffers request on a swapped
+ * server. This request swaps the buffers for all windows listed,
+ * applying the appropriate swap action for each window.
+ *
+ * Return Values:
+ *
+ * BadMatch - a window in request is not double-buffered; a window in
+ * request is listed more than once; all windows in request do
+ * not have the same root
+ * BadValue - invalid swap action is specified
+ * BadWindow - a window in request is not valid
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+SProcDbeSwapBuffers(ClientPtr client)
+{
+ REQUEST(xDbeSwapBuffersReq);
+ register int i, n;
+ xDbeSwapInfo *pSwapInfo;
+
+
+ swaps(&stuff->length, n);
+ REQUEST_AT_LEAST_SIZE(xDbeSwapBuffersReq);
+
+ swapl(&stuff->n, n);
+
+ if (stuff->n != 0)
+ {
+ pSwapInfo = (xDbeSwapInfo *)stuff+1;
+
+ /* The swap info following the fix part of this request is a window(32)
+ * followed by a 1 byte swap action and then 3 pad bytes. We only need
+ * to swap the window information.
+ */
+ for (i = 0; i < stuff->n; i++)
+ {
+ swapl(&pSwapInfo->window, n);
+ }
+ }
+
+ return(ProcDbeSwapBuffers(client));
+
+} /* SProcDbeSwapBuffers() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: SProcDbeBeginIdiom
+ *
+ * Description:
+ *
+ * This function is for processing a DbeBeginIdiom request on a swapped
+ * server. This request informs the server that a complex swap will
+ * immediately follow this request.
+ *
+ * Return Values:
+ *
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+SProcDbeBeginIdiom(ClientPtr client)
+{
+ REQUEST(xDbeBeginIdiomReq);
+ register int n;
+
+ swaps(&stuff->length, n);
+ return(ProcDbeBeginIdiom(client));
+
+} /* SProcDbeBeginIdiom() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: SProcDbeGetVisualInfo
+ *
+ * Description:
+ *
+ * This function is for processing a ProcDbeGetVisualInfo request on a
+ * swapped server. This request returns information about which visuals
+ * support double buffering.
+ *
+ * Return Values:
+ *
+ * BadDrawable - value in screen specifiers is not a valid drawable
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+SProcDbeGetVisualInfo(ClientPtr client)
+{
+ REQUEST(xDbeGetVisualInfoReq);
+ register int n;
+
+
+ swaps(&stuff->length, n);
+ REQUEST_AT_LEAST_SIZE(xDbeGetVisualInfoReq);
+
+ swapl(&stuff->n, n);
+ SwapRestL(stuff);
+
+ return(ProcDbeGetVisualInfo(client));
+
+} /* SProcDbeGetVisualInfo() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: SProcDbeGetbackBufferAttributes
+ *
+ * Description:
+ *
+ * This function is for processing a ProcDbeGetbackBufferAttributes
+ * request on a swapped server. This request returns information about a
+ * back buffer.
+ *
+ * Return Values:
+ *
+ * Success
+ *
+ *****************************************************************************/
+
+static int
+SProcDbeGetBackBufferAttributes(ClientPtr client)
+{
+ REQUEST (xDbeGetBackBufferAttributesReq);
+ register int n;
+
+ swaps(&stuff->length, n);
+ REQUEST_SIZE_MATCH(xDbeGetBackBufferAttributesReq);
+
+ swapl(&stuff->buffer, n);
+
+ return(ProcDbeGetBackBufferAttributes(client));
+
+} /* SProcDbeGetBackBufferAttributes() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: SProcDbeDispatch
+ *
+ * Description:
+ *
+ * This function dispatches DBE requests on a swapped server.
+ *
+ *****************************************************************************/
+
+static int
+SProcDbeDispatch(ClientPtr client)
+{
+ REQUEST(xReq);
+
+
+ switch (stuff->data)
+ {
+ case X_DbeGetVersion:
+ return(SProcDbeGetVersion(client));
+
+ case X_DbeAllocateBackBufferName:
+ return(SProcDbeAllocateBackBufferName(client));
+
+ case X_DbeDeallocateBackBufferName:
+ return(SProcDbeDeallocateBackBufferName(client));
+
+ case X_DbeSwapBuffers:
+ return(SProcDbeSwapBuffers(client));
+
+ case X_DbeBeginIdiom:
+ return(SProcDbeBeginIdiom(client));
+
+ case X_DbeEndIdiom:
+ return Success;
+
+ case X_DbeGetVisualInfo:
+ return(SProcDbeGetVisualInfo(client));
+
+ case X_DbeGetBackBufferAttributes:
+ return(SProcDbeGetBackBufferAttributes(client));
+
+ default:
+ return BadRequest;
+ }
+
+} /* SProcDbeDispatch() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: DbeSetupBackgroundPainter
+ *
+ * Description:
+ *
+ * This function sets up pGC to clear pixmaps.
+ *
+ * Return Values:
+ *
+ * TRUE - setup was successful
+ * FALSE - the window's background state is NONE
+ *
+ *****************************************************************************/
+
+static Bool
+DbeSetupBackgroundPainter(WindowPtr pWin, GCPtr pGC)
+{
+ ChangeGCVal gcvalues[4];
+ int ts_x_origin, ts_y_origin;
+ PixUnion background;
+ int backgroundState;
+ Mask gcmask;
+
+
+ /* First take care of any ParentRelative stuff by altering the
+ * tile/stipple origin to match the coordinates of the upper-left
+ * corner of the first ancestor without a ParentRelative background.
+ * This coordinate is, of course, negative.
+ */
+ ts_x_origin = ts_y_origin = 0;
+ while (pWin->backgroundState == ParentRelative)
+ {
+ ts_x_origin -= pWin->origin.x;
+ ts_y_origin -= pWin->origin.y;
+
+ pWin = pWin->parent;
+ }
+ backgroundState = pWin->backgroundState;
+ background = pWin->background;
+
+ switch (backgroundState)
+ {
+ case BackgroundPixel:
+ gcvalues[0].val = background.pixel;
+ gcvalues[1].val = FillSolid;
+ gcmask = GCForeground|GCFillStyle;
+ break;
+
+ case BackgroundPixmap:
+ gcvalues[0].val = FillTiled;
+ gcvalues[1].ptr = background.pixmap;
+ gcvalues[2].val = ts_x_origin;
+ gcvalues[3].val = ts_y_origin;
+ gcmask = GCFillStyle|GCTile|GCTileStipXOrigin|GCTileStipYOrigin;
+ break;
+
+ default:
+ /* pWin->backgroundState == None */
+ return FALSE;
+ }
+
+ return ChangeGC(NullClient, pGC, gcmask, gcvalues) == 0;
+} /* DbeSetupBackgroundPainter() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: DbeDrawableDelete
+ *
+ * Description:
+ *
+ * This is the resource delete function for dbeDrawableResType.
+ * It is registered when the drawable resource type is created in
+ * DbeExtensionInit().
+ *
+ * To make resource deletion simple, we do not do anything in this function
+ * and leave all resource deleteion to DbeWindowPrivDelete(), which will
+ * eventually be called or already has been called. Deletion functions are
+ * not guaranteed to be called in any particular order.
+ *
+ *****************************************************************************/
+static int
+DbeDrawableDelete(pointer pDrawable, XID id)
+{
+ return Success;
+
+} /* DbeDrawableDelete() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: DbeWindowPrivDelete
+ *
+ * Description:
+ *
+ * This is the resource delete function for dbeWindowPrivResType.
+ * It is registered when the drawable resource type is created in
+ * DbeExtensionInit().
+ *
+ *****************************************************************************/
+static int
+DbeWindowPrivDelete(pointer pDbeWinPriv, XID id)
+{
+ DbeScreenPrivPtr pDbeScreenPriv;
+ DbeWindowPrivPtr pDbeWindowPriv = (DbeWindowPrivPtr)pDbeWinPriv;
+ int i;
+
+
+ /*
+ **************************************************************************
+ ** Remove the buffer ID from the ID array.
+ **************************************************************************
+ */
+
+ /* Find the ID in the ID array. */
+ i = 0;
+ while ((i < pDbeWindowPriv->nBufferIDs) && (pDbeWindowPriv->IDs[i] != id))
+ {
+ i++;
+ }
+
+ if (i == pDbeWindowPriv->nBufferIDs)
+ {
+ /* We did not find the ID in the array. We should never get here. */
+ return BadValue;
+ }
+
+ /* Remove the ID from the array. */
+
+ if (i < (pDbeWindowPriv->nBufferIDs - 1))
+ {
+ /* Compress the buffer ID array, overwriting the ID in the process. */
+ memmove(&pDbeWindowPriv->IDs[i], &pDbeWindowPriv->IDs[i+1],
+ (pDbeWindowPriv->nBufferIDs - i - 1) * sizeof(XID));
+ }
+ else
+ {
+ /* We are removing the last ID in the array, in which case, the
+ * assignement below is all that we need to do.
+ */
+ }
+ pDbeWindowPriv->IDs[pDbeWindowPriv->nBufferIDs - 1] = DBE_FREE_ID_ELEMENT;
+
+ pDbeWindowPriv->nBufferIDs--;
+
+ /* If an extended array was allocated, then check to see if the remaining
+ * buffer IDs will fit in the static array.
+ */
+
+ if ((pDbeWindowPriv->maxAvailableIDs > DBE_INIT_MAX_IDS) &&
+ (pDbeWindowPriv->nBufferIDs == DBE_INIT_MAX_IDS))
+ {
+ /* Copy the IDs back into the static array. */
+ memcpy(pDbeWindowPriv->initIDs, pDbeWindowPriv->IDs,
+ DBE_INIT_MAX_IDS * sizeof(XID));
+
+ /* Free the extended array; use the static array. */
+ free(pDbeWindowPriv->IDs);
+ pDbeWindowPriv->IDs = pDbeWindowPriv->initIDs;
+ pDbeWindowPriv->maxAvailableIDs = DBE_INIT_MAX_IDS;
+ }
+
+
+ /*
+ **************************************************************************
+ ** Perform DDX level tasks.
+ **************************************************************************
+ */
+
+ pDbeScreenPriv = DBE_SCREEN_PRIV_FROM_WINDOW_PRIV(
+ (DbeWindowPrivPtr)pDbeWindowPriv);
+ (*pDbeScreenPriv->WinPrivDelete)((DbeWindowPrivPtr)pDbeWindowPriv, id);
+
+
+ /*
+ **************************************************************************
+ ** Perform miscellaneous tasks if this is the last buffer associated
+ ** with the window.
+ **************************************************************************
+ */
+
+ if (pDbeWindowPriv->nBufferIDs == 0)
+ {
+ /* Reset the DBE window priv pointer. */
+ dixSetPrivate(&pDbeWindowPriv->pWindow->devPrivates, dbeWindowPrivKey,
+ NULL);
+
+ /* We are done with the window priv. */
+ dixFreeObjectWithPrivates(pDbeWindowPriv, PRIVATE_DBE_WINDOW);
+ }
+
+ return Success;
+
+} /* DbeWindowPrivDelete() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: DbeResetProc
+ *
+ * Description:
+ *
+ * This routine is called at the end of every server generation.
+ * It deallocates any memory reserved for the extension and performs any
+ * other tasks related to shutting down the extension.
+ *
+ *****************************************************************************/
+static void
+DbeResetProc(ExtensionEntry *extEntry)
+{
+ int i;
+ ScreenPtr pScreen;
+ DbeScreenPrivPtr pDbeScreenPriv;
+
+ for (i = 0; i < screenInfo.numScreens; i++)
+ {
+ pScreen = screenInfo.screens[i];
+ pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
+
+ if (pDbeScreenPriv)
+ {
+ /* Unwrap DestroyWindow, which was wrapped in DbeExtensionInit().*/
+ pScreen->DestroyWindow = pDbeScreenPriv->DestroyWindow;
+
+ if (pDbeScreenPriv->ResetProc)
+ (*pDbeScreenPriv->ResetProc)(pScreen);
+
+ free(pDbeScreenPriv);
+ }
+ }
+} /* DbeResetProc() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: DbeDestroyWindow
+ *
+ * Description:
+ *
+ * This is the wrapper for pScreen->DestroyWindow.
+ * This function frees buffer resources for a window before it is
+ * destroyed.
+ *
+ *****************************************************************************/
+
+static Bool
+DbeDestroyWindow(WindowPtr pWin)
+{
+ DbeScreenPrivPtr pDbeScreenPriv;
+ DbeWindowPrivPtr pDbeWindowPriv;
+ ScreenPtr pScreen;
+ Bool ret;
+
+
+ /*
+ **************************************************************************
+ ** 1. Unwrap the member routine.
+ **************************************************************************
+ */
+
+ pScreen = pWin->drawable.pScreen;
+ pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
+ pScreen->DestroyWindow = pDbeScreenPriv->DestroyWindow;
+
+ /*
+ **************************************************************************
+ ** 2. Do any work necessary before the member routine is called.
+ **
+ ** Call the window priv delete function for all buffer IDs associated
+ ** with this window.
+ **************************************************************************
+ */
+
+ if ((pDbeWindowPriv = DBE_WINDOW_PRIV(pWin)))
+ {
+ while (pDbeWindowPriv)
+ {
+ /* *DbeWinPrivDelete() will free the window private and set it to
+ * NULL if there are no more buffer IDs associated with this
+ * window.
+ */
+ FreeResource(pDbeWindowPriv->IDs[0], RT_NONE);
+ pDbeWindowPriv = DBE_WINDOW_PRIV(pWin);
+ }
+ }
+
+ /*
+ **************************************************************************
+ ** 3. Call the member routine, saving its result if necessary.
+ **************************************************************************
+ */
+
+ ret = (*pScreen->DestroyWindow)(pWin);
+
+ /*
+ **************************************************************************
+ ** 4. Rewrap the member routine, restoring the wrapper value first in case
+ ** the wrapper (or something that it wrapped) change this value.
+ **************************************************************************
+ */
+
+ pDbeScreenPriv->DestroyWindow = pScreen->DestroyWindow;
+ pScreen->DestroyWindow = DbeDestroyWindow;
+
+ /*
+ **************************************************************************
+ ** 5. Do any work necessary after the member routine has been called.
+ **
+ ** In this case we do not need to do anything.
+ **************************************************************************
+ */
+
+ return ret;
+
+} /* DbeDestroyWindow() */
+
+
+/******************************************************************************
+ *
+ * DBE DIX Procedure: DbeExtensionInit
+ *
+ * Description:
+ *
+ * Called from InitExtensions in main()
+ *
+ *****************************************************************************/
+
+void
+DbeExtensionInit(void)
+{
+ ExtensionEntry *extEntry;
+ register int i, j;
+ ScreenPtr pScreen = NULL;
+ DbeScreenPrivPtr pDbeScreenPriv;
+ int nStubbedScreens = 0;
+ Bool ddxInitSuccess;
+
+#ifdef PANORAMIX
+ if(!noPanoramiXExtension) return;
+#endif
+
+ /* Create the resource types. */
+ dbeDrawableResType =
+ CreateNewResourceType(DbeDrawableDelete, "dbeDrawable");
+ if (!dbeDrawableResType)
+ return;
+ dbeDrawableResType |= RC_DRAWABLE;
+
+ dbeWindowPrivResType =
+ CreateNewResourceType(DbeWindowPrivDelete, "dbeWindow");
+ if (!dbeWindowPrivResType)
+ return;
+
+ if (!dixRegisterPrivateKey(&dbeScreenPrivKeyRec, PRIVATE_SCREEN, 0))
+ return;
+
+ if (!dixRegisterPrivateKey(&dbeWindowPrivKeyRec, PRIVATE_WINDOW, 0))
+ return;
+
+ for (i = 0; i < screenInfo.numScreens; i++)
+ {
+ /* For each screen, set up DBE screen privates and init DIX and DDX
+ * interface.
+ */
+
+ pScreen = screenInfo.screens[i];
+
+ if (!(pDbeScreenPriv = malloc (sizeof (DbeScreenPrivRec))))
+ {
+ /* If we can not alloc a window or screen private,
+ * then free any privates that we already alloc'ed and return
+ */
+
+ for (j = 0; j < i; j++)
+ {
+ free(dixLookupPrivate(&screenInfo.screens[j]->devPrivates,
+ dbeScreenPrivKey));
+ dixSetPrivate(&screenInfo.screens[j]->devPrivates,
+ dbeScreenPrivKey, NULL);
+ }
+ return;
+ }
+
+ dixSetPrivate(&pScreen->devPrivates, dbeScreenPrivKey, pDbeScreenPriv);
+
+ {
+ /* We don't have DDX support for DBE anymore */
+
+#ifndef DISABLE_MI_DBE_BY_DEFAULT
+ /* Setup DIX. */
+ pDbeScreenPriv->SetupBackgroundPainter = DbeSetupBackgroundPainter;
+
+ /* Setup DDX. */
+ ddxInitSuccess = miDbeInit(pScreen, pDbeScreenPriv);
+
+ /* DDX DBE initialization may have the side affect of
+ * reallocating pDbeScreenPriv, so we need to update it.
+ */
+ pDbeScreenPriv = DBE_SCREEN_PRIV(pScreen);
+
+ if (ddxInitSuccess)
+ {
+ /* Wrap DestroyWindow. The DDX initialization function
+ * already wrapped PositionWindow for us.
+ */
+
+ pDbeScreenPriv->DestroyWindow = pScreen->DestroyWindow;
+ pScreen->DestroyWindow = DbeDestroyWindow;
+ }
+ else
+ {
+ /* DDX initialization failed. Stub the screen. */
+ DbeStubScreen(pDbeScreenPriv, &nStubbedScreens);
+ }
+#else
+ DbeStubScreen(pDbeScreenPriv, &nStubbedScreens);
+#endif
+
+ }
+
+ } /* for (i = 0; i < screenInfo.numScreens; i++) */
+
+
+ if (nStubbedScreens == screenInfo.numScreens)
+ {
+ /* All screens stubbed. Clean up and return. */
+
+ for (i = 0; i < screenInfo.numScreens; i++)
+ {
+ free(dixLookupPrivate(&screenInfo.screens[i]->devPrivates,
+ dbeScreenPrivKey));
+ dixSetPrivate(&pScreen->devPrivates, dbeScreenPrivKey, NULL);
+ }
+ return;
+ }
+
+
+ /* Now add the extension. */
+ extEntry = AddExtension(DBE_PROTOCOL_NAME, DbeNumberEvents,
+ DbeNumberErrors, ProcDbeDispatch, SProcDbeDispatch,
+ DbeResetProc, StandardMinorOpcode);
+
+ dbeErrorBase = extEntry->errorBase;
+ SetResourceTypeErrorValue(dbeWindowPrivResType, dbeErrorBase + DbeBadBuffer);
+ SetResourceTypeErrorValue(dbeDrawableResType, dbeErrorBase + DbeBadBuffer);
+
+} /* DbeExtensionInit() */
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 21:28:39 +0000