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  1. /**************************************************************************
  2.  
  3. Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
  4. Copyright 2000 VA Linux Systems, Inc.
  5. All Rights Reserved.
  6.  
  7. Permission is hereby granted, free of charge, to any person obtaining a
  8. copy of this software and associated documentation files (the
  9. "Software"), to deal in the Software without restriction, including
  10. without limitation the rights to use, copy, modify, merge, publish,
  11. distribute, sub license, and/or sell copies of the Software, and to
  12. permit persons to whom the Software is furnished to do so, subject to
  13. the following conditions:
  14.  
  15. The above copyright notice and this permission notice (including the
  16. next paragraph) shall be included in all copies or substantial portions
  17. of the Software.
  18.  
  19. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20. OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21. MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22. IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  23. ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24. TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25. SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26.  
  27. **************************************************************************/
  28.  
  29. /*
  30.  * Authors:
  31.  *   Kevin E. Martin <martin@valinux.com>
  32.  *   Jens Owen <jens@tungstengraphics.com>
  33.  *   Rickard E. (Rik) Faith <faith@valinux.com>
  34.  *
  35.  */
  36.  
  37. /* THIS IS NOT AN X CONSORTIUM STANDARD */
  38.  
  39. #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
  40.  
  41. #include <X11/Xlibint.h>
  42. #include <X11/Xfuncproto.h>
  43. #include <X11/extensions/Xext.h>
  44. #include <X11/extensions/extutil.h>
  45. #include "xf86dristr.h"
  46. #include <limits.h>
  47.  
  48. static XExtensionInfo _xf86dri_info_data;
  49. static XExtensionInfo *xf86dri_info = &_xf86dri_info_data;
  50. static char xf86dri_extension_name[] = XF86DRINAME;
  51.  
  52. #define XF86DRICheckExtension(dpy,i,val) \
  53.   XextCheckExtension (dpy, i, xf86dri_extension_name, val)
  54.  
  55. /*****************************************************************************
  56.  *                                                                           *
  57.  *                         private utility routines                          *
  58.  *                                                                           *
  59.  *****************************************************************************/
  60.  
  61. static int close_display(Display * dpy, XExtCodes * extCodes);
  62. static /* const */ XExtensionHooks xf86dri_extension_hooks = {
  63.    NULL,                        /* create_gc */
  64.    NULL,                        /* copy_gc */
  65.    NULL,                        /* flush_gc */
  66.    NULL,                        /* free_gc */
  67.    NULL,                        /* create_font */
  68.    NULL,                        /* free_font */
  69.    close_display,               /* close_display */
  70.    NULL,                        /* wire_to_event */
  71.    NULL,                        /* event_to_wire */
  72.    NULL,                        /* error */
  73.    NULL,                        /* error_string */
  74. };
  75.  
  76. static
  77. XEXT_GENERATE_FIND_DISPLAY(find_display, xf86dri_info,
  78.                            xf86dri_extension_name,
  79.                            &xf86dri_extension_hooks, 0, NULL)
  80.  
  81. static
  82. XEXT_GENERATE_CLOSE_DISPLAY(close_display, xf86dri_info)
  83.  
  84.  
  85. /*****************************************************************************
  86.  *                                                                           *
  87.  *                  public XFree86-DRI Extension routines                    *
  88.  *                                                                           *
  89.  *****************************************************************************/
  90. #if 0
  91. #include <stdio.h>
  92. #define TRACE(msg)  fprintf(stderr,"XF86DRI%s\n", msg);
  93. #else
  94. #define TRACE(msg)
  95. #endif
  96.  
  97. Bool
  98. XF86DRIQueryExtension(Display * dpy, int *event_basep,
  99.                       int *error_basep)
  100. {
  101.    XExtDisplayInfo *info = find_display(dpy);
  102.  
  103.    TRACE("QueryExtension...");
  104.    if (XextHasExtension(info)) {
  105.       *event_basep = info->codes->first_event;
  106.       *error_basep = info->codes->first_error;
  107.       TRACE("QueryExtension... return True");
  108.       return True;
  109.    }
  110.    else {
  111.       TRACE("QueryExtension... return False");
  112.       return False;
  113.    }
  114. }
  115.  
  116. Bool
  117. XF86DRIQueryVersion(Display * dpy, int *majorVersion, int *minorVersion,
  118.                     int *patchVersion)
  119. {
  120.    XExtDisplayInfo *info = find_display(dpy);
  121.    xXF86DRIQueryVersionReply rep;
  122.    xXF86DRIQueryVersionReq *req;
  123.  
  124.    TRACE("QueryVersion...");
  125.    XF86DRICheckExtension(dpy, info, False);
  126.  
  127.    LockDisplay(dpy);
  128.    GetReq(XF86DRIQueryVersion, req);
  129.    req->reqType = info->codes->major_opcode;
  130.    req->driReqType = X_XF86DRIQueryVersion;
  131.    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
  132.       UnlockDisplay(dpy);
  133.       SyncHandle();
  134.       TRACE("QueryVersion... return False");
  135.       return False;
  136.    }
  137.    *majorVersion = rep.majorVersion;
  138.    *minorVersion = rep.minorVersion;
  139.    *patchVersion = rep.patchVersion;
  140.    UnlockDisplay(dpy);
  141.    SyncHandle();
  142.    TRACE("QueryVersion... return True");
  143.    return True;
  144. }
  145.  
  146. Bool
  147. XF86DRIQueryDirectRenderingCapable(Display * dpy, int screen,
  148.                                    Bool * isCapable)
  149. {
  150.    XExtDisplayInfo *info = find_display(dpy);
  151.    xXF86DRIQueryDirectRenderingCapableReply rep;
  152.    xXF86DRIQueryDirectRenderingCapableReq *req;
  153.  
  154.    TRACE("QueryDirectRenderingCapable...");
  155.    XF86DRICheckExtension(dpy, info, False);
  156.  
  157.    LockDisplay(dpy);
  158.    GetReq(XF86DRIQueryDirectRenderingCapable, req);
  159.    req->reqType = info->codes->major_opcode;
  160.    req->driReqType = X_XF86DRIQueryDirectRenderingCapable;
  161.    req->screen = screen;
  162.    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
  163.       UnlockDisplay(dpy);
  164.       SyncHandle();
  165.       TRACE("QueryDirectRenderingCapable... return False");
  166.       return False;
  167.    }
  168.    *isCapable = rep.isCapable;
  169.    UnlockDisplay(dpy);
  170.    SyncHandle();
  171.    TRACE("QueryDirectRenderingCapable... return True");
  172.    return True;
  173. }
  174.  
  175. Bool
  176. XF86DRIOpenConnection(Display * dpy, int screen, drm_handle_t * hSAREA,
  177.                       char **busIdString)
  178. {
  179.    XExtDisplayInfo *info = find_display(dpy);
  180.    xXF86DRIOpenConnectionReply rep;
  181.    xXF86DRIOpenConnectionReq *req;
  182.  
  183.    TRACE("OpenConnection...");
  184.    XF86DRICheckExtension(dpy, info, False);
  185.  
  186.    LockDisplay(dpy);
  187.    GetReq(XF86DRIOpenConnection, req);
  188.    req->reqType = info->codes->major_opcode;
  189.    req->driReqType = X_XF86DRIOpenConnection;
  190.    req->screen = screen;
  191.    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
  192.       UnlockDisplay(dpy);
  193.       SyncHandle();
  194.       TRACE("OpenConnection... return False");
  195.       return False;
  196.    }
  197.  
  198.    *hSAREA = rep.hSAREALow;
  199.    if (sizeof(drm_handle_t) == 8) {
  200.       int shift = 32;           /* var to prevent warning on next line */
  201.       *hSAREA |= ((drm_handle_t) rep.hSAREAHigh) << shift;
  202.    }
  203.  
  204.    if (rep.length) {
  205.       if (rep.busIdStringLength < INT_MAX)
  206.          *busIdString = calloc(rep.busIdStringLength + 1, 1);
  207.       else
  208.          *busIdString = NULL;
  209.       if (*busIdString == NULL) {
  210.          _XEatData(dpy, ((rep.busIdStringLength + 3) & ~3));
  211.          UnlockDisplay(dpy);
  212.          SyncHandle();
  213.          TRACE("OpenConnection... return False");
  214.          return False;
  215.       }
  216.       _XReadPad(dpy, *busIdString, rep.busIdStringLength);
  217.    }
  218.    else {
  219.       *busIdString = NULL;
  220.    }
  221.    UnlockDisplay(dpy);
  222.    SyncHandle();
  223.    TRACE("OpenConnection... return True");
  224.    return True;
  225. }
  226.  
  227. Bool
  228. XF86DRIAuthConnection(Display * dpy, int screen, drm_magic_t magic)
  229. {
  230.    XExtDisplayInfo *info = find_display(dpy);
  231.    xXF86DRIAuthConnectionReq *req;
  232.    xXF86DRIAuthConnectionReply rep;
  233.  
  234.    TRACE("AuthConnection...");
  235.    XF86DRICheckExtension(dpy, info, False);
  236.  
  237.    LockDisplay(dpy);
  238.    GetReq(XF86DRIAuthConnection, req);
  239.    req->reqType = info->codes->major_opcode;
  240.    req->driReqType = X_XF86DRIAuthConnection;
  241.    req->screen = screen;
  242.    req->magic = magic;
  243.    rep.authenticated = 0;
  244.    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse) || !rep.authenticated) {
  245.       UnlockDisplay(dpy);
  246.       SyncHandle();
  247.       TRACE("AuthConnection... return False");
  248.       return False;
  249.    }
  250.    UnlockDisplay(dpy);
  251.    SyncHandle();
  252.    TRACE("AuthConnection... return True");
  253.    return True;
  254. }
  255.  
  256. Bool
  257. XF86DRICloseConnection(Display * dpy, int screen)
  258. {
  259.    XExtDisplayInfo *info = find_display(dpy);
  260.    xXF86DRICloseConnectionReq *req;
  261.  
  262.    TRACE("CloseConnection...");
  263.  
  264.    XF86DRICheckExtension(dpy, info, False);
  265.  
  266.    LockDisplay(dpy);
  267.    GetReq(XF86DRICloseConnection, req);
  268.    req->reqType = info->codes->major_opcode;
  269.    req->driReqType = X_XF86DRICloseConnection;
  270.    req->screen = screen;
  271.    UnlockDisplay(dpy);
  272.    SyncHandle();
  273.    TRACE("CloseConnection... return True");
  274.    return True;
  275. }
  276.  
  277. Bool
  278. XF86DRIGetClientDriverName(Display * dpy, int screen,
  279.                            int *ddxDriverMajorVersion,
  280.                            int *ddxDriverMinorVersion,
  281.                            int *ddxDriverPatchVersion,
  282.                            char **clientDriverName)
  283. {
  284.    XExtDisplayInfo *info = find_display(dpy);
  285.    xXF86DRIGetClientDriverNameReply rep;
  286.    xXF86DRIGetClientDriverNameReq *req;
  287.  
  288.    TRACE("GetClientDriverName...");
  289.    XF86DRICheckExtension(dpy, info, False);
  290.  
  291.    LockDisplay(dpy);
  292.    GetReq(XF86DRIGetClientDriverName, req);
  293.    req->reqType = info->codes->major_opcode;
  294.    req->driReqType = X_XF86DRIGetClientDriverName;
  295.    req->screen = screen;
  296.    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
  297.       UnlockDisplay(dpy);
  298.       SyncHandle();
  299.       TRACE("GetClientDriverName... return False");
  300.       return False;
  301.    }
  302.  
  303.    *ddxDriverMajorVersion = rep.ddxDriverMajorVersion;
  304.    *ddxDriverMinorVersion = rep.ddxDriverMinorVersion;
  305.    *ddxDriverPatchVersion = rep.ddxDriverPatchVersion;
  306.  
  307.    if (rep.length) {
  308.       if (rep.clientDriverNameLength < INT_MAX)
  309.          *clientDriverName = calloc(rep.clientDriverNameLength + 1, 1);
  310.       else
  311.          *clientDriverName = NULL;
  312.       if (*clientDriverName == NULL) {
  313.          _XEatData(dpy, ((rep.clientDriverNameLength + 3) & ~3));
  314.          UnlockDisplay(dpy);
  315.          SyncHandle();
  316.          TRACE("GetClientDriverName... return False");
  317.          return False;
  318.       }
  319.       _XReadPad(dpy, *clientDriverName, rep.clientDriverNameLength);
  320.    }
  321.    else {
  322.       *clientDriverName = NULL;
  323.    }
  324.    UnlockDisplay(dpy);
  325.    SyncHandle();
  326.    TRACE("GetClientDriverName... return True");
  327.    return True;
  328. }
  329.  
  330. Bool
  331. XF86DRICreateContextWithConfig(Display * dpy, int screen, int configID,
  332.                                XID * context, drm_context_t * hHWContext)
  333. {
  334.    XExtDisplayInfo *info = find_display(dpy);
  335.    xXF86DRICreateContextReply rep;
  336.    xXF86DRICreateContextReq *req;
  337.  
  338.    TRACE("CreateContext...");
  339.    XF86DRICheckExtension(dpy, info, False);
  340.  
  341.    LockDisplay(dpy);
  342.    GetReq(XF86DRICreateContext, req);
  343.    req->reqType = info->codes->major_opcode;
  344.    req->driReqType = X_XF86DRICreateContext;
  345.    req->visual = configID;
  346.    req->screen = screen;
  347.    *context = XAllocID(dpy);
  348.    req->context = *context;
  349.    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
  350.       UnlockDisplay(dpy);
  351.       SyncHandle();
  352.       TRACE("CreateContext... return False");
  353.       return False;
  354.    }
  355.    *hHWContext = rep.hHWContext;
  356.    UnlockDisplay(dpy);
  357.    SyncHandle();
  358.    TRACE("CreateContext... return True");
  359.    return True;
  360. }
  361.  
  362. Bool
  363. XF86DRICreateContext(Display * dpy, int screen, Visual * visual,
  364.                      XID * context, drm_context_t * hHWContext)
  365. {
  366.    return XF86DRICreateContextWithConfig(dpy, screen, visual->visualid,
  367.                                          context, hHWContext);
  368. }
  369.  
  370. Bool
  371. XF86DRIDestroyContext(Display * dpy, int screen, XID context)
  372. {
  373.    XExtDisplayInfo *info = find_display(dpy);
  374.    xXF86DRIDestroyContextReq *req;
  375.  
  376.    TRACE("DestroyContext...");
  377.    XF86DRICheckExtension(dpy, info, False);
  378.  
  379.    LockDisplay(dpy);
  380.    GetReq(XF86DRIDestroyContext, req);
  381.    req->reqType = info->codes->major_opcode;
  382.    req->driReqType = X_XF86DRIDestroyContext;
  383.    req->screen = screen;
  384.    req->context = context;
  385.    UnlockDisplay(dpy);
  386.    SyncHandle();
  387.    TRACE("DestroyContext... return True");
  388.    return True;
  389. }
  390.  
  391. Bool
  392. XF86DRICreateDrawable(Display * dpy, int screen,
  393.                       XID drawable, drm_drawable_t * hHWDrawable)
  394. {
  395.    XExtDisplayInfo *info = find_display(dpy);
  396.    xXF86DRICreateDrawableReply rep;
  397.    xXF86DRICreateDrawableReq *req;
  398.  
  399.    TRACE("CreateDrawable...");
  400.    XF86DRICheckExtension(dpy, info, False);
  401.  
  402.    LockDisplay(dpy);
  403.    GetReq(XF86DRICreateDrawable, req);
  404.    req->reqType = info->codes->major_opcode;
  405.    req->driReqType = X_XF86DRICreateDrawable;
  406.    req->screen = screen;
  407.    req->drawable = drawable;
  408.    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
  409.       UnlockDisplay(dpy);
  410.       SyncHandle();
  411.       TRACE("CreateDrawable... return False");
  412.       return False;
  413.    }
  414.    *hHWDrawable = rep.hHWDrawable;
  415.    UnlockDisplay(dpy);
  416.    SyncHandle();
  417.    TRACE("CreateDrawable... return True");
  418.    return True;
  419. }
  420.  
  421. static int
  422. noopErrorHandler(Display * dpy, XErrorEvent * xerr)
  423. {
  424.    return 0;
  425. }
  426.  
  427. Bool
  428. XF86DRIDestroyDrawable(Display * dpy, int screen, XID drawable)
  429. {
  430.    XExtDisplayInfo *info = find_display(dpy);
  431.    xXF86DRIDestroyDrawableReq *req;
  432.    int (*oldXErrorHandler) (Display *, XErrorEvent *);
  433.  
  434.    TRACE("DestroyDrawable...");
  435.    XF86DRICheckExtension(dpy, info, False);
  436.  
  437.    /* This is called from the DRI driver, which used call it like this
  438.     *
  439.     *   if (windowExists(drawable))
  440.     *     destroyDrawable(drawable);
  441.     *
  442.     * which is a textbook race condition - the window may disappear
  443.     * from the server between checking for its existance and
  444.     * destroying it.  Instead we change the semantics of
  445.     * __DRIinterfaceMethodsRec::destroyDrawable() to succeed even if
  446.     * the windows is gone, by wrapping the destroy call in an error
  447.     * handler. */
  448.  
  449.    XSync(dpy, False);
  450.    oldXErrorHandler = XSetErrorHandler(noopErrorHandler);
  451.  
  452.    LockDisplay(dpy);
  453.    GetReq(XF86DRIDestroyDrawable, req);
  454.    req->reqType = info->codes->major_opcode;
  455.    req->driReqType = X_XF86DRIDestroyDrawable;
  456.    req->screen = screen;
  457.    req->drawable = drawable;
  458.    UnlockDisplay(dpy);
  459.    SyncHandle();
  460.  
  461.    XSetErrorHandler(oldXErrorHandler);
  462.  
  463.    TRACE("DestroyDrawable... return True");
  464.    return True;
  465. }
  466.  
  467. Bool
  468. XF86DRIGetDrawableInfo(Display * dpy, int screen, Drawable drawable,
  469.                        unsigned int *index, unsigned int *stamp,
  470.                        int *X, int *Y, int *W, int *H,
  471.                        int *numClipRects, drm_clip_rect_t ** pClipRects,
  472.                        int *backX, int *backY,
  473.                        int *numBackClipRects,
  474.                        drm_clip_rect_t ** pBackClipRects)
  475. {
  476.    XExtDisplayInfo *info = find_display(dpy);
  477.    xXF86DRIGetDrawableInfoReply rep;
  478.    xXF86DRIGetDrawableInfoReq *req;
  479.    int total_rects;
  480.  
  481.    TRACE("GetDrawableInfo...");
  482.    XF86DRICheckExtension(dpy, info, False);
  483.  
  484.    LockDisplay(dpy);
  485.    GetReq(XF86DRIGetDrawableInfo, req);
  486.    req->reqType = info->codes->major_opcode;
  487.    req->driReqType = X_XF86DRIGetDrawableInfo;
  488.    req->screen = screen;
  489.    req->drawable = drawable;
  490.  
  491.    if (!_XReply(dpy, (xReply *) & rep, 1, xFalse)) {
  492.       UnlockDisplay(dpy);
  493.       SyncHandle();
  494.       TRACE("GetDrawableInfo... return False");
  495.       return False;
  496.    }
  497.    *index = rep.drawableTableIndex;
  498.    *stamp = rep.drawableTableStamp;
  499.    *X = (int) rep.drawableX;
  500.    *Y = (int) rep.drawableY;
  501.    *W = (int) rep.drawableWidth;
  502.    *H = (int) rep.drawableHeight;
  503.    *numClipRects = rep.numClipRects;
  504.    total_rects = *numClipRects;
  505.  
  506.    *backX = rep.backX;
  507.    *backY = rep.backY;
  508.    *numBackClipRects = rep.numBackClipRects;
  509.    total_rects += *numBackClipRects;
  510.  
  511. #if 0
  512.    /* Because of the fix in Xserver/GL/dri/xf86dri.c, this check breaks
  513.     * backwards compatibility (Because of the >> 2 shift) but the fix
  514.     * enables multi-threaded apps to work.
  515.     */
  516.    if (rep.length != ((((SIZEOF(xXF86DRIGetDrawableInfoReply) -
  517.                          SIZEOF(xGenericReply) +
  518.                          total_rects * sizeof(drm_clip_rect_t)) +
  519.                         3) & ~3) >> 2)) {
  520.       _XEatData(dpy, rep.length);
  521.       UnlockDisplay(dpy);
  522.       SyncHandle();
  523.       TRACE("GetDrawableInfo... return False");
  524.       return False;
  525.    }
  526. #endif
  527.  
  528.    if (*numClipRects) {
  529.       int len = sizeof(drm_clip_rect_t) * (*numClipRects);
  530.  
  531.       *pClipRects = calloc(len, 1);
  532.       if (*pClipRects)
  533.          _XRead(dpy, (char *) *pClipRects, len);
  534.    }
  535.    else {
  536.       *pClipRects = NULL;
  537.    }
  538.  
  539.    if (*numBackClipRects) {
  540.       int len = sizeof(drm_clip_rect_t) * (*numBackClipRects);
  541.  
  542.       *pBackClipRects = calloc(len, 1);
  543.       if (*pBackClipRects)
  544.          _XRead(dpy, (char *) *pBackClipRects, len);
  545.    }
  546.    else {
  547.       *pBackClipRects = NULL;
  548.    }
  549.  
  550.    UnlockDisplay(dpy);
  551.    SyncHandle();
  552.    TRACE("GetDrawableInfo... return True");
  553.    return True;
  554. }
  555.  
  556. Bool
  557. XF86DRIGetDeviceInfo(Display * dpy, int screen, drm_handle_t * hFrameBuffer,
  558.                      int *fbOrigin, int *fbSize, int *fbStride,
  559.                      int *devPrivateSize, void **pDevPrivate)
  560. {
  561.    XExtDisplayInfo *info = find_display(dpy);
  562.    xXF86DRIGetDeviceInfoReply rep;
  563.    xXF86DRIGetDeviceInfoReq *req;
  564.  
  565.    TRACE("GetDeviceInfo...");
  566.    XF86DRICheckExtension(dpy, info, False);
  567.  
  568.    LockDisplay(dpy);
  569.    GetReq(XF86DRIGetDeviceInfo, req);
  570.    req->reqType = info->codes->major_opcode;
  571.    req->driReqType = X_XF86DRIGetDeviceInfo;
  572.    req->screen = screen;
  573.    if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {
  574.       UnlockDisplay(dpy);
  575.       SyncHandle();
  576.       TRACE("GetDeviceInfo... return False");
  577.       return False;
  578.    }
  579.  
  580.    *hFrameBuffer = rep.hFrameBufferLow;
  581.    if (sizeof(drm_handle_t) == 8) {
  582.       int shift = 32;           /* var to prevent warning on next line */
  583.       *hFrameBuffer |= ((drm_handle_t) rep.hFrameBufferHigh) << shift;
  584.    }
  585.  
  586.    *fbOrigin = rep.framebufferOrigin;
  587.    *fbSize = rep.framebufferSize;
  588.    *fbStride = rep.framebufferStride;
  589.    *devPrivateSize = rep.devPrivateSize;
  590.  
  591.    if (rep.length) {
  592.       if (!(*pDevPrivate = calloc(rep.devPrivateSize, 1))) {
  593.          _XEatData(dpy, ((rep.devPrivateSize + 3) & ~3));
  594.          UnlockDisplay(dpy);
  595.          SyncHandle();
  596.          TRACE("GetDeviceInfo... return False");
  597.          return False;
  598.       }
  599.       _XRead(dpy, (char *) *pDevPrivate, rep.devPrivateSize);
  600.    }
  601.    else {
  602.       *pDevPrivate = NULL;
  603.    }
  604.  
  605.    UnlockDisplay(dpy);
  606.    SyncHandle();
  607.    TRACE("GetDeviceInfo... return True");
  608.    return True;
  609. }
  610.  
  611. Bool
  612. XF86DRIOpenFullScreen(Display * dpy, int screen, Drawable drawable)
  613. {
  614.    /* This function and the underlying X protocol are deprecated.
  615.     */
  616.    (void) dpy;
  617.    (void) screen;
  618.    (void) drawable;
  619.    return False;
  620. }
  621.  
  622. Bool
  623. XF86DRICloseFullScreen(Display * dpy, int screen, Drawable drawable)
  624. {
  625.    /* This function and the underlying X protocol are deprecated.
  626.     */
  627.    (void) dpy;
  628.    (void) screen;
  629.    (void) drawable;
  630.    return True;
  631. }
  632.  
  633. #endif /* GLX_DIRECT_RENDERING */
  634.