/**************************************************************************/
/*                                                                        */
/* Copyright (c) 2001, 2011 NoMachine, http://www.nomachine.com/.         */
/*                                                                        */
/* NXAGENT, NX protocol compression and NX extensions to this software    */
/* are copyright of NoMachine. Redistribution and use of the present      */
/* software is allowed according to terms specified in the file LICENSE   */
/* which comes in the source distribution.                                */
/*                                                                        */
/* Check http://www.nomachine.com/licensing.html for applicability.       */
/*                                                                        */
/* NX and NoMachine are trademarks of Medialogic S.p.A.                   */
/*                                                                        */
/* All rights reserved.                                                   */
/*                                                                        */
/**************************************************************************/

/* $XFree86: xc/programs/Xserver/GL/glx/glxext.c,v 1.9 2003/09/28 20:15:43 alanh Exp $
** The contents of this file are subject to the GLX Public License Version 1.0
** (the "License"). You may not use this file except in compliance with the
** License. You may obtain a copy of the License at Silicon Graphics, Inc.,
** attn: Legal Services, 2011 N. Shoreline Blvd., Mountain View, CA 94043
** or at http://www.sgi.com/software/opensource/glx/license.html.
**
** Software distributed under the License is distributed on an "AS IS"
** basis. ALL WARRANTIES ARE DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY
** IMPLIED WARRANTIES OF MERCHANTABILITY, OF FITNESS FOR A PARTICULAR
** PURPOSE OR OF NON- INFRINGEMENT. See the License for the specific
** language governing rights and limitations under the License.
**
** The Original Software is GLX version 1.2 source code, released February,
** 1999. The developer of the Original Software is Silicon Graphics, Inc.
** Those portions of the Subject Software created by Silicon Graphics, Inc.
** are Copyright (c) 1991-9 Silicon Graphics, Inc. All Rights Reserved.
**
*/

#include "../../GL/glx/glxext.c"

#include "Trap.h"

#define PANIC
#define WARNING
#undef  TEST
#undef  DEBUG

/*
** Top level dispatcher; all commands are executed from here down.
*/
static int __glXDispatch(ClientPtr client)
{
    int result;

    REQUEST(xGLXSingleReq);
    CARD8 opcode;
    int (*proc)(__GLXclientState *cl, GLbyte *pc);
    __GLXclientState *cl;

    opcode = stuff->glxCode;
    cl = __glXClients[client->index];
    if (!cl) {
	cl = (__GLXclientState *) __glXMalloc(sizeof(__GLXclientState));
	 __glXClients[client->index] = cl;
	if (!cl) {
	    return BadAlloc;
	}
	__glXMemset(cl, 0, sizeof(__GLXclientState));
    }
    
    if (!cl->inUse) {
	/*
	** This is first request from this client.  Associate a resource
	** with the client so we will be notified when the client dies.
	*/
	XID xid = FakeClientID(client->index);
	if (!AddResource( xid, __glXClientRes, (void *)(long)client->index)) {
	    return BadAlloc;
	}
	ResetClientState(client->index);
	cl->inUse = GL_TRUE;
	cl->client = client;
    }

    /*
    ** Check for valid opcode.
    */
    if (opcode >= __GLX_SINGLE_TABLE_SIZE) {
	return BadRequest;
    }

    /*
    ** If we're expecting a glXRenderLarge request, this better be one.
    */
    if ((cl->largeCmdRequestsSoFar != 0) && (opcode != X_GLXRenderLarge)) {
	client->errorValue = stuff->glxCode;
	return __glXBadLargeRequest;
    }

    /*
    ** Use the opcode to index into the procedure table.
    */
    proc = __glXSingleTable[opcode];

    /*
     * Report upstream that we are
     * dispatching a GLX operation.
     */

    nxagentGlxTrap = 1;

    #ifdef TEST
    fprintf(stderr, "__glXDispatch: Going to dispatch GLX operation [%d] for client [%d].\n", 
                opcode, client -> index);
    #endif
    
    result = (*proc)(cl, (GLbyte *) stuff);

    nxagentGlxTrap = 0;

    #ifdef TEST
    fprintf(stderr, "__glXDispatch: Dispatched GLX operation [%d] for client [%d].\n", 
                opcode, client -> index);
    #endif

    return result;
}

static int __glXSwapDispatch(ClientPtr client)
{
    int result;

    REQUEST(xGLXSingleReq);
    CARD8 opcode;
    int (*proc)(__GLXclientState *cl, GLbyte *pc);
    __GLXclientState *cl;

    opcode = stuff->glxCode;
    cl = __glXClients[client->index];
    if (!cl) {
	cl = (__GLXclientState *) __glXMalloc(sizeof(__GLXclientState));
	 __glXClients[client->index] = cl;
	if (!cl) {
	    return BadAlloc;
	}
	__glXMemset(cl, 0, sizeof(__GLXclientState));
    }
    
    if (!cl->inUse) {
	/*
	** This is first request from this client.  Associate a resource
	** with the client so we will be notified when the client dies.
	*/
	XID xid = FakeClientID(client->index);
	if (!AddResource( xid, __glXClientRes, (void *)(long)client->index)) {
	    return BadAlloc;
	}
	ResetClientState(client->index);
	cl->inUse = GL_TRUE;
	cl->client = client;
    }

    /*
    ** Check for valid opcode.
    */
    if (opcode >= __GLX_SINGLE_TABLE_SIZE) {
	return BadRequest;
    }

    /*
    ** Use the opcode to index into the procedure table.
    */
    proc = __glXSwapSingleTable[opcode];

    /*
     * Report upstream that we are
     * dispatching a GLX operation.
     */

    nxagentGlxTrap = 1;

    #ifdef TEST
    fprintf(stderr, "__glXDispatch: Going to dispatch GLX operation [%d] for client [%d].\n", 
                opcode, client -> index);
    #endif
    
    result = (*proc)(cl, (GLbyte *) stuff);

    nxagentGlxTrap = 0;

    #ifdef TEST
    fprintf(stderr, "__glXDispatch: Dispatched GLX operation [%d] for client [%d].\n", 
                opcode, client -> index);
    #endif

    return result;
}