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/**************************************************************************

Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.

Copyright 2000 VA Linux Systems, Inc.

All Rights Reserved.

Permission is hereby granted, free of charge, to any person obtaining a

copy of this software and associated documentation files (the

"Software"), to deal in the Software without restriction, including

without limitation the rights to use, copy, modify, merge, publish,

distribute, sub license, 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 (including the

next paragraph) 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 NON-INFRINGEMENT.

IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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.

**************************************************************************/

/*

 * Authors:

 *   Kevin E. Martin 

 *   Jens Owen 

 *   Rickard E. (Rik) Faith 

 *

 */

/* THIS IS NOT AN X CONSORTIUM STANDARD */

#if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)

#include 

#include 

#include 

#include 

#include "xf86dristr.h"

#include 

static XExtensionInfo _xf86dri_info_data;

static XExtensionInfo *xf86dri_info = &_xf86dri_info_data;

static char xf86dri_extension_name[] = XF86DRINAME;

#define XF86DRICheckExtension(dpy,i,val) \

  XextCheckExtension (dpy, i, xf86dri_extension_name, val)

/*****************************************************************************

 *                                                                           *

 *			   private utility routines                          *

 *                                                                           *

 *****************************************************************************/

static int close_display(Display * dpy, XExtCodes * extCodes);

static /* const */ XExtensionHooks xf86dri_extension_hooks = {

   NULL,                        /* create_gc */

   NULL,                        /* copy_gc */

   NULL,                        /* flush_gc */

   NULL,                        /* free_gc */

   NULL,                        /* create_font */

   NULL,                        /* free_font */

   close_display,               /* close_display */

   NULL,                        /* wire_to_event */

   NULL,                        /* event_to_wire */

   NULL,                        /* error */

   NULL,                        /* error_string */

};

static

XEXT_GENERATE_FIND_DISPLAY(find_display, xf86dri_info,

                           xf86dri_extension_name,

                           &xf86dri_extension_hooks, 0, NULL)

static

XEXT_GENERATE_CLOSE_DISPLAY(close_display, xf86dri_info)

/*****************************************************************************

 *                                                                           *

 *		    public XFree86-DRI Extension routines                    *

 *                                                                           *

 *****************************************************************************/

#if 0

#include 

#define TRACE(msg)  fprintf(stderr,"XF86DRI%s\n", msg);

#else

#define TRACE(msg)

#endif

Bool

XF86DRIQueryExtension(Display * dpy, int *event_basep,

                      int *error_basep)

{

   XExtDisplayInfo *info = find_display(dpy);

   TRACE("QueryExtension...");

   if (XextHasExtension(info)) {

      *event_basep = info->codes->first_event;

      *error_basep = info->codes->first_error;

      TRACE("QueryExtension... return True");

      return True;

   }

   else {

      TRACE("QueryExtension... return False");

      return False;

   }

}

Bool

XF86DRIQueryVersion(Display * dpy, int *majorVersion, int *minorVersion,

                    int *patchVersion)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRIQueryVersionReply rep;

   xXF86DRIQueryVersionReq *req;

   TRACE("QueryVersion...");

   XF86DRICheckExtension(dpy, info, False);

   LockDisplay(dpy);

   GetReq(XF86DRIQueryVersion, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRIQueryVersion;

   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

      UnlockDisplay(dpy);

      SyncHandle();

      TRACE("QueryVersion... return False");

      return False;

   }

   *majorVersion = rep.majorVersion;

   *minorVersion = rep.minorVersion;

   *patchVersion = rep.patchVersion;

   UnlockDisplay(dpy);

   SyncHandle();

   TRACE("QueryVersion... return True");

   return True;

}

Bool

XF86DRIQueryDirectRenderingCapable(Display * dpy, int screen,

                                   Bool * isCapable)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRIQueryDirectRenderingCapableReply rep;

   xXF86DRIQueryDirectRenderingCapableReq *req;

   TRACE("QueryDirectRenderingCapable...");

   XF86DRICheckExtension(dpy, info, False);

   LockDisplay(dpy);

   GetReq(XF86DRIQueryDirectRenderingCapable, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRIQueryDirectRenderingCapable;

   req->screen = screen;

   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

      UnlockDisplay(dpy);

      SyncHandle();

      TRACE("QueryDirectRenderingCapable... return False");

      return False;

   }

   *isCapable = rep.isCapable;

   UnlockDisplay(dpy);

   SyncHandle();

   TRACE("QueryDirectRenderingCapable... return True");

   return True;

}

Bool

XF86DRIOpenConnection(Display * dpy, int screen, drm_handle_t * hSAREA,

                      char **busIdString)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRIOpenConnectionReply rep;

   xXF86DRIOpenConnectionReq *req;

   TRACE("OpenConnection...");

   XF86DRICheckExtension(dpy, info, False);

   LockDisplay(dpy);

   GetReq(XF86DRIOpenConnection, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRIOpenConnection;

   req->screen = screen;

   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

      UnlockDisplay(dpy);

      SyncHandle();

      TRACE("OpenConnection... return False");

      return False;

   }

   *hSAREA = rep.hSAREALow;

   if (sizeof(drm_handle_t) == 8) {

      int shift = 32;           /* var to prevent warning on next line */

      *hSAREA |= ((drm_handle_t) rep.hSAREAHigh) << shift;

   }

   if (rep.length) {

      if (rep.busIdStringLength < INT_MAX)

         *busIdString = calloc(rep.busIdStringLength + 1, 1);

      else

         *busIdString = NULL;

      if (*busIdString == NULL) {

         _XEatData(dpy, ((rep.busIdStringLength + 3) & ~3));

         UnlockDisplay(dpy);

         SyncHandle();

         TRACE("OpenConnection... return False");

         return False;

      }

      _XReadPad(dpy, *busIdString, rep.busIdStringLength);

   }

   else {

      *busIdString = NULL;

   }

   UnlockDisplay(dpy);

   SyncHandle();

   TRACE("OpenConnection... return True");

   return True;

}

Bool

XF86DRIAuthConnection(Display * dpy, int screen, drm_magic_t magic)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRIAuthConnectionReq *req;

   xXF86DRIAuthConnectionReply rep;

   TRACE("AuthConnection...");

   XF86DRICheckExtension(dpy, info, False);

   LockDisplay(dpy);

   GetReq(XF86DRIAuthConnection, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRIAuthConnection;

   req->screen = screen;

   req->magic = magic;

   rep.authenticated = 0;

   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse) || !rep.authenticated) {

      UnlockDisplay(dpy);

      SyncHandle();

      TRACE("AuthConnection... return False");

      return False;

   }

   UnlockDisplay(dpy);

   SyncHandle();

   TRACE("AuthConnection... return True");

   return True;

}

Bool

XF86DRICloseConnection(Display * dpy, int screen)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRICloseConnectionReq *req;

   TRACE("CloseConnection...");

   XF86DRICheckExtension(dpy, info, False);

   LockDisplay(dpy);

   GetReq(XF86DRICloseConnection, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRICloseConnection;

   req->screen = screen;

   UnlockDisplay(dpy);

   SyncHandle();

   TRACE("CloseConnection... return True");

   return True;

}

Bool

XF86DRIGetClientDriverName(Display * dpy, int screen,

                           int *ddxDriverMajorVersion,

                           int *ddxDriverMinorVersion,

                           int *ddxDriverPatchVersion,

                           char **clientDriverName)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRIGetClientDriverNameReply rep;

   xXF86DRIGetClientDriverNameReq *req;

   TRACE("GetClientDriverName...");

   XF86DRICheckExtension(dpy, info, False);

   LockDisplay(dpy);

   GetReq(XF86DRIGetClientDriverName, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRIGetClientDriverName;

   req->screen = screen;

   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

      UnlockDisplay(dpy);

      SyncHandle();

      TRACE("GetClientDriverName... return False");

      return False;

   }

   *ddxDriverMajorVersion = rep.ddxDriverMajorVersion;

   *ddxDriverMinorVersion = rep.ddxDriverMinorVersion;

   *ddxDriverPatchVersion = rep.ddxDriverPatchVersion;

   if (rep.length) {

      if (rep.clientDriverNameLength < INT_MAX)

         *clientDriverName = calloc(rep.clientDriverNameLength + 1, 1);

      else

         *clientDriverName = NULL;

      if (*clientDriverName == NULL) {

         _XEatData(dpy, ((rep.clientDriverNameLength + 3) & ~3));

         UnlockDisplay(dpy);

         SyncHandle();

         TRACE("GetClientDriverName... return False");

         return False;

      }

      _XReadPad(dpy, *clientDriverName, rep.clientDriverNameLength);

   }

   else {

      *clientDriverName = NULL;

   }

   UnlockDisplay(dpy);

   SyncHandle();

   TRACE("GetClientDriverName... return True");

   return True;

}

Bool

XF86DRICreateContextWithConfig(Display * dpy, int screen, int configID,

                               XID * context, drm_context_t * hHWContext)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRICreateContextReply rep;

   xXF86DRICreateContextReq *req;

   TRACE("CreateContext...");

   XF86DRICheckExtension(dpy, info, False);

   LockDisplay(dpy);

   GetReq(XF86DRICreateContext, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRICreateContext;

   req->visual = configID;

   req->screen = screen;

   *context = XAllocID(dpy);

   req->context = *context;

   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

      UnlockDisplay(dpy);

      SyncHandle();

      TRACE("CreateContext... return False");

      return False;

   }

   *hHWContext = rep.hHWContext;

   UnlockDisplay(dpy);

   SyncHandle();

   TRACE("CreateContext... return True");

   return True;

}

Bool

XF86DRICreateContext(Display * dpy, int screen, Visual * visual,

                     XID * context, drm_context_t * hHWContext)

{

   return XF86DRICreateContextWithConfig(dpy, screen, visual->visualid,

                                         context, hHWContext);

}

Bool

XF86DRIDestroyContext(Display * dpy, int screen, XID context)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRIDestroyContextReq *req;

   TRACE("DestroyContext...");

   XF86DRICheckExtension(dpy, info, False);

   LockDisplay(dpy);

   GetReq(XF86DRIDestroyContext, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRIDestroyContext;

   req->screen = screen;

   req->context = context;

   UnlockDisplay(dpy);

   SyncHandle();

   TRACE("DestroyContext... return True");

   return True;

}

Bool

XF86DRICreateDrawable(Display * dpy, int screen,

                      XID drawable, drm_drawable_t * hHWDrawable)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRICreateDrawableReply rep;

   xXF86DRICreateDrawableReq *req;

   TRACE("CreateDrawable...");

   XF86DRICheckExtension(dpy, info, False);

   LockDisplay(dpy);

   GetReq(XF86DRICreateDrawable, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRICreateDrawable;

   req->screen = screen;

   req->drawable = drawable;

   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

      UnlockDisplay(dpy);

      SyncHandle();

      TRACE("CreateDrawable... return False");

      return False;

   }

   *hHWDrawable = rep.hHWDrawable;

   UnlockDisplay(dpy);

   SyncHandle();

   TRACE("CreateDrawable... return True");

   return True;

}

static int

noopErrorHandler(Display * dpy, XErrorEvent * xerr)

{

   return 0;

}

Bool

XF86DRIDestroyDrawable(Display * dpy, int screen, XID drawable)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRIDestroyDrawableReq *req;

   int (*oldXErrorHandler) (Display *, XErrorEvent *);

   TRACE("DestroyDrawable...");

   XF86DRICheckExtension(dpy, info, False);

   /* This is called from the DRI driver, which used call it like this

    *

    *   if (windowExists(drawable))

    *     destroyDrawable(drawable);

    *

    * which is a textbook race condition - the window may disappear

    * from the server between checking for its existance and

    * destroying it.  Instead we change the semantics of

    * __DRIinterfaceMethodsRec::destroyDrawable() to succeed even if

    * the windows is gone, by wrapping the destroy call in an error

    * handler. */

   XSync(dpy, False);

   oldXErrorHandler = XSetErrorHandler(noopErrorHandler);

   LockDisplay(dpy);

   GetReq(XF86DRIDestroyDrawable, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRIDestroyDrawable;

   req->screen = screen;

   req->drawable = drawable;

   UnlockDisplay(dpy);

   SyncHandle();

   XSetErrorHandler(oldXErrorHandler);

   TRACE("DestroyDrawable... return True");

   return True;

}

Bool

XF86DRIGetDrawableInfo(Display * dpy, int screen, Drawable drawable,

                       unsigned int *index, unsigned int *stamp,

                       int *X, int *Y, int *W, int *H,

                       int *numClipRects, drm_clip_rect_t ** pClipRects,

                       int *backX, int *backY,

                       int *numBackClipRects,

                       drm_clip_rect_t ** pBackClipRects)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRIGetDrawableInfoReply rep;

   xXF86DRIGetDrawableInfoReq *req;

   int total_rects;

   TRACE("GetDrawableInfo...");

   XF86DRICheckExtension(dpy, info, False);

   LockDisplay(dpy);

   GetReq(XF86DRIGetDrawableInfo, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRIGetDrawableInfo;

   req->screen = screen;

   req->drawable = drawable;

   if (!_XReply(dpy, (xReply *) & rep, 1, xFalse)) {

      UnlockDisplay(dpy);

      SyncHandle();

      TRACE("GetDrawableInfo... return False");

      return False;

   }

   *index = rep.drawableTableIndex;

   *stamp = rep.drawableTableStamp;

   *X = (int) rep.drawableX;

   *Y = (int) rep.drawableY;

   *W = (int) rep.drawableWidth;

   *H = (int) rep.drawableHeight;

   *numClipRects = rep.numClipRects;

   total_rects = *numClipRects;

   *backX = rep.backX;

   *backY = rep.backY;

   *numBackClipRects = rep.numBackClipRects;

   total_rects += *numBackClipRects;

#if 0

   /* Because of the fix in Xserver/GL/dri/xf86dri.c, this check breaks

    * backwards compatibility (Because of the >> 2 shift) but the fix

    * enables multi-threaded apps to work.

    */

   if (rep.length != ((((SIZEOF(xXF86DRIGetDrawableInfoReply) -

                         SIZEOF(xGenericReply) +

                         total_rects * sizeof(drm_clip_rect_t)) +

                        3) & ~3) >> 2)) {

      _XEatData(dpy, rep.length);

      UnlockDisplay(dpy);

      SyncHandle();

      TRACE("GetDrawableInfo... return False");

      return False;

   }

#endif

   if (*numClipRects) {

      int len = sizeof(drm_clip_rect_t) * (*numClipRects);

      *pClipRects = calloc(len, 1);

      if (*pClipRects)

         _XRead(dpy, (char *) *pClipRects, len);

   }

   else {

      *pClipRects = NULL;

   }

   if (*numBackClipRects) {

      int len = sizeof(drm_clip_rect_t) * (*numBackClipRects);

      *pBackClipRects = calloc(len, 1);

      if (*pBackClipRects)

         _XRead(dpy, (char *) *pBackClipRects, len);

   }

   else {

      *pBackClipRects = NULL;

   }

   UnlockDisplay(dpy);

   SyncHandle();

   TRACE("GetDrawableInfo... return True");

   return True;

}

Bool

XF86DRIGetDeviceInfo(Display * dpy, int screen, drm_handle_t * hFrameBuffer,

                     int *fbOrigin, int *fbSize, int *fbStride,

                     int *devPrivateSize, void **pDevPrivate)

{

   XExtDisplayInfo *info = find_display(dpy);

   xXF86DRIGetDeviceInfoReply rep;

   xXF86DRIGetDeviceInfoReq *req;

   TRACE("GetDeviceInfo...");

   XF86DRICheckExtension(dpy, info, False);

   LockDisplay(dpy);

   GetReq(XF86DRIGetDeviceInfo, req);

   req->reqType = info->codes->major_opcode;

   req->driReqType = X_XF86DRIGetDeviceInfo;

   req->screen = screen;

   if (!_XReply(dpy, (xReply *) & rep, 0, xFalse)) {

      UnlockDisplay(dpy);

      SyncHandle();

      TRACE("GetDeviceInfo... return False");

      return False;

   }

   *hFrameBuffer = rep.hFrameBufferLow;

   if (sizeof(drm_handle_t) == 8) {

      int shift = 32;           /* var to prevent warning on next line */

      *hFrameBuffer |= ((drm_handle_t) rep.hFrameBufferHigh) << shift;

   }

   *fbOrigin = rep.framebufferOrigin;

   *fbSize = rep.framebufferSize;

   *fbStride = rep.framebufferStride;

   *devPrivateSize = rep.devPrivateSize;

   if (rep.length) {

      if (!(*pDevPrivate = calloc(rep.devPrivateSize, 1))) {

         _XEatData(dpy, ((rep.devPrivateSize + 3) & ~3));

         UnlockDisplay(dpy);

         SyncHandle();

         TRACE("GetDeviceInfo... return False");

         return False;

      }

      _XRead(dpy, (char *) *pDevPrivate, rep.devPrivateSize);

   }

   else {

      *pDevPrivate = NULL;

   }

   UnlockDisplay(dpy);

   SyncHandle();

   TRACE("GetDeviceInfo... return True");

   return True;

}

Bool

XF86DRIOpenFullScreen(Display * dpy, int screen, Drawable drawable)

{

   /* This function and the underlying X protocol are deprecated.

    */

   (void) dpy;

   (void) screen;

   (void) drawable;

   return False;

}

Bool

XF86DRICloseFullScreen(Display * dpy, int screen, Drawable drawable)

{

   /* This function and the underlying X protocol are deprecated.

    */

   (void) dpy;

   (void) screen;

   (void) drawable;

   return True;

}

#endif /* GLX_DIRECT_RENDERING */