xserver git update 15/5/2010

1 files changed, 1012 insertions, 1012 deletions

diff --git a/xorg-server/hw/dmx/glxProxy/glxsingle.c b/xorg-server/hw/dmx/glxProxy/glxsingle.c
index dcc604052..19f12ad58 100644
--- a/xorg-server/hw/dmx/glxProxy/glxsingle.c
+++ b/xorg-server/hw/dmx/glxProxy/glxsingle.c
@@ -1,1012 +1,1012 @@
-/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED */
-/*
- * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
- * Copyright (C) 1991-2000 Silicon Graphics, 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, 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 including the dates of first publication and
- * either this permission notice or a reference to
- * http://oss.sgi.com/projects/FreeB/
- * 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
- * SILICON GRAPHICS, INC. 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 Silicon Graphics, Inc.
- * shall not be used in advertising or otherwise to promote the sale, use or
- * other dealings in this Software without prior written authorization from
- * Silicon Graphics, Inc.
- */
-
-#ifdef HAVE_DMX_CONFIG_H
-#include <dmx-config.h>
-#endif
-
-#include "dmx.h"
-#include "dmxwindow.h"
-#include "dmxpixmap.h"
-#include "dmxfont.h"
-#include "dmxcb.h"
-
-#undef Xmalloc
-#undef Xcalloc
-#undef Xrealloc
-#undef Xfree
-
-#include "glxserver.h"
-#include "glxext.h"
-#include "g_disptab.h"
-/* #include "g_disptab_EXT.h" */
-#include "unpack.h"
-#include "glxutil.h"
-
-#include "GL/glxproto.h"
-
-#ifdef PANORAMIX
-#include "panoramiXsrv.h"
-#endif
-
-/*
- * GetReqSingle - this is the equivalent of GetReq macro
- *    from Xlibint.h but it does not set the reqType field (the opcode).
- *    this is because the GL single opcodes has different naming convension
- *    the other X opcodes (ie. X_GLsop_GetFloatv).
- */
-#if (defined(__STDC__) && !defined(UNIXCPP)) || defined(ANSICPP)
-#define GetReqSingle(name, req) \
-        WORD64ALIGN\
-	if ((dpy->bufptr + SIZEOF(x##name##Req)) > dpy->bufmax)\
-		_XFlush(dpy);\
-	req = (x##name##Req *)(dpy->last_req = dpy->bufptr);\
-	req->length = (SIZEOF(x##name##Req))>>2;\
-	dpy->bufptr += SIZEOF(x##name##Req);\
-	dpy->request++
-
-#else  /* non-ANSI C uses empty comment instead of "##" for token concatenation */
-#define GetReqSingle(name, req) \
-        WORD64ALIGN\
-	if ((dpy->bufptr + SIZEOF(x/**/name/**/Req)) > dpy->bufmax)\
-		_XFlush(dpy);\
-	req = (x/**/name/**/Req *)(dpy->last_req = dpy->bufptr);\
-	req->length = (SIZEOF(x/**/name/**/Req))>>2;\
-	dpy->bufptr += SIZEOF(x/**/name/**/Req);\
-	dpy->request++
-#endif
-
-#define X_GLXSingle 0   /* needed by GetReqExtra */
-
-extern Display *GetBackEndDisplay( __GLXclientState *cl, int s );
-extern int GetCurrentBackEndTag(__GLXclientState *cl, GLXContextTag tag, int s);
-
-static int swap_vec_element_size = 0;
-
-static void SendSwappedReply( ClientPtr client,
-                              xGLXSingleReply *reply, 
-			      char *buf,
-			      int   buf_size )
-{
-   __GLX_DECLARE_SWAP_VARIABLES;
-   __GLX_SWAP_SHORT(&reply->sequenceNumber);
-   __GLX_SWAP_INT(&reply->length);
-   __GLX_SWAP_INT(&reply->retval);
-   __GLX_SWAP_INT(&reply->size);
-
-   if ( (buf_size == 0) && (swap_vec_element_size > 0) ) {
-      /*
-       * the reply has single component - need to swap pad3
-       */
-      if (swap_vec_element_size == 2) {
-	 __GLX_SWAP_SHORT(&reply->pad3);
-      }
-      else if (swap_vec_element_size == 4) {
-	 __GLX_SWAP_INT(&reply->pad3);
-	 __GLX_SWAP_INT(&reply->pad4);    /* some requests use also pad4
-                                          * i.e GetConvolutionFilter
-					  */
-      }
-      else if (swap_vec_element_size == 8) {
-	 __GLX_SWAP_DOUBLE(&reply->pad3);
-      }
-   }
-   else if ( (buf_size > 0) && (swap_vec_element_size > 0) ) {
-      /*
-       * the reply has vector of elements which needs to be swapped
-       */
-      int vsize = buf_size / swap_vec_element_size;
-      char *p = buf;
-      int i;
-
-      for (i=0; i<vsize; i++) {
-	 if (swap_vec_element_size == 2) {
-	    __GLX_SWAP_SHORT(p);
-	 }
-	 else if (swap_vec_element_size == 4) {
-	    __GLX_SWAP_INT(p);
-	 }
-	 else if (swap_vec_element_size == 8) {
-	    __GLX_SWAP_DOUBLE(p);
-	 }
-
-	 p += swap_vec_element_size;
-      }
-
-      /*
-       * swap pad words as well - for case that some single reply uses
-       * them as well
-       */
-      __GLX_SWAP_INT(&reply->pad3);
-      __GLX_SWAP_INT(&reply->pad4);
-      __GLX_SWAP_INT(&reply->pad5);
-      __GLX_SWAP_INT(&reply->pad6);
-
-   }
-
-    WriteToClient(client, sizeof(xGLXSingleReply),(char *)reply);
-    if (buf_size > 0)
-       WriteToClient(client, buf_size, (char *)buf);
-
-}
-
-int __glXForwardSingleReq( __GLXclientState *cl, GLbyte *pc )
-{
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   xGLXSingleReq *be_req;
-    __GLXcontext *glxc;
-   int from_screen = 0;
-   int to_screen = 0;
-   int buf_size;
-   int s;
-
-    glxc = __glXLookupContextByTag(cl, req->contextTag);
-    if (!glxc) {
-	return 0;
-    }
-    from_screen = to_screen = glxc->pScreen->myNum;
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    pc += sz_xGLXSingleReq;
-    buf_size = (req->length << 2) - sz_xGLXSingleReq;
-
-    /*
-     * just forward the request to back-end server(s)
-     */
-    for (s=from_screen; s<=to_screen; s++) {
-       DMXScreenInfo *dmxScreen = &dmxScreens[s];
-       Display *dpy = GetBackEndDisplay(cl,s);
-
-       LockDisplay(dpy);
-       GetReqSingle(GLXSingle,be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = req->glxCode;
-       be_req->length = req->length;
-       be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,s);
-       if (buf_size > 0) 
-	  _XSend(dpy, (const char *)pc, buf_size);
-       UnlockDisplay(dpy);
-       SyncHandle();
-
-       if (req->glxCode == X_GLsop_Flush) {
-	  XFlush(dpy);
-       }
-
-    }
-
-    return Success;
-}
-
-int __glXForwardPipe0WithReply( __GLXclientState *cl, GLbyte *pc )
-{
-   ClientPtr client = cl->client;
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   xGLXSingleReq *be_req;
-   xGLXSingleReply reply;
-   xGLXSingleReply be_reply;
-    __GLXcontext *glxc;
-   int buf_size;
-   char *be_buf;
-   int   be_buf_size;
-   DMXScreenInfo *dmxScreen;
-   Display *dpy;
-
-    glxc = __glXLookupContextByTag(cl, req->contextTag);
-    if (!glxc) {
-	return __glXBadContext;
-    }
-
-    pc += sz_xGLXSingleReq;
-    buf_size = (req->length << 2) - sz_xGLXSingleReq;
-
-    dmxScreen = &dmxScreens[glxc->pScreen->myNum];
-    dpy = GetBackEndDisplay(cl, glxc->pScreen->myNum);
-
-    /* 
-     * send the request to the first back-end server
-     */
-    LockDisplay(dpy);
-    GetReqSingle(GLXSingle,be_req);
-    be_req->reqType = dmxScreen->glxMajorOpcode;
-    be_req->glxCode = req->glxCode;
-    be_req->length = req->length;
-    be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,glxc->pScreen->myNum);
-    if (buf_size > 0) 
-       _XSend(dpy, (const char *)pc, buf_size);
-
-    /*
-     * get the reply from the back-end server
-     */
-    _XReply(dpy, (xReply*) &be_reply, 0, False);
-    be_buf_size = be_reply.length << 2;
-    if (be_buf_size > 0) {
-       be_buf = (char *)Xalloc( be_buf_size );
-       if (be_buf) {
-	  _XRead(dpy, be_buf, be_buf_size);
-       }
-       else {
-	  /* Throw data on the floor */
-	  _XEatData(dpy, be_buf_size);
-	  return BadAlloc;
-       }
-    }
-
-    UnlockDisplay(dpy);
-    SyncHandle();
-
-    /*
-     * send the reply to the client
-     */
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = be_reply.length;
-    reply.retval = be_reply.retval;
-    reply.size = be_reply.size;
-    reply.pad3 = be_reply.pad3;
-    reply.pad4 = be_reply.pad4;
-
-    if (client->swapped) {
-       SendSwappedReply( client, &reply, be_buf, be_buf_size );
-    }
-    else {
-       WriteToClient(client, sizeof(xGLXSingleReply),(char *)&reply);
-       if (be_buf_size > 0)
-	  WriteToClient(client, be_buf_size, (char *)be_buf);
-    }
-
-    if (be_buf_size > 0) Xfree(be_buf);
-
-    return Success;
-}
-
-int __glXForwardAllWithReply( __GLXclientState *cl, GLbyte *pc )
-{
-   ClientPtr client = cl->client;
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   xGLXSingleReq *be_req;
-   xGLXSingleReply reply;
-   xGLXSingleReply be_reply;
-    __GLXcontext *glxc;
-   int buf_size;
-   char *be_buf;
-   int   be_buf_size;
-   int from_screen = 0;
-   int to_screen = 0;
-   int s;
-
-   DMXScreenInfo *dmxScreen;
-   Display *dpy;
-
-    glxc = __glXLookupContextByTag(cl, req->contextTag);
-    if (!glxc) {
-	return 0;
-    }
-    from_screen = to_screen = glxc->pScreen->myNum;
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    pc += sz_xGLXSingleReq;
-    buf_size = (req->length << 2) - sz_xGLXSingleReq;
-
-    /* 
-     * send the request to the first back-end server(s)
-     */
-    for (s=to_screen; s>=from_screen; s--) {
-       dmxScreen = &dmxScreens[s];
-       dpy = GetBackEndDisplay(cl,s);
-
-       LockDisplay(dpy);
-       GetReqSingle(GLXSingle,be_req);
-       be_req->reqType = dmxScreen->glxMajorOpcode;
-       be_req->glxCode = req->glxCode;
-       be_req->length = req->length;
-       be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,s);
-       if (buf_size > 0) 
-	  _XSend(dpy, (const char *)pc, buf_size);
-
-       /*
-	* get the reply from the back-end server
-	*/
-       _XReply(dpy, (xReply*) &be_reply, 0, False);
-       be_buf_size = be_reply.length << 2;
-       if (be_buf_size > 0) {
-	  be_buf = (char *)Xalloc( be_buf_size );
-	  if (be_buf) {
-	     _XRead(dpy, be_buf, be_buf_size);
-	  }
-	  else {
-	     /* Throw data on the floor */
-	     _XEatData(dpy, be_buf_size);
-	     return BadAlloc;
-	  }
-       }
-
-       UnlockDisplay(dpy);
-       SyncHandle();
-
-       if (s > from_screen && be_buf_size > 0) {
-	  Xfree(be_buf);
-       }
-    }
-
-    /*
-     * send the reply to the client
-     */
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = be_reply.length;
-    reply.retval = be_reply.retval;
-    reply.size = be_reply.size;
-    reply.pad3 = be_reply.pad3;
-    reply.pad4 = be_reply.pad4;
-
-    if (client->swapped) {
-       SendSwappedReply( client, &reply, be_buf, be_buf_size );
-    }
-    else {
-       WriteToClient(client, sizeof(xGLXSingleReply),(char *)&reply);
-       if (be_buf_size > 0)
-	  WriteToClient(client, be_buf_size, (char *)be_buf);
-    }
-
-    if (be_buf_size > 0) Xfree(be_buf);
-
-    return Success;
-}
-
-int __glXForwardSingleReqSwap( __GLXclientState *cl, GLbyte *pc )
-{
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   __GLX_DECLARE_SWAP_VARIABLES;
-
-   __GLX_SWAP_SHORT(&req->length);
-   __GLX_SWAP_INT(&req->contextTag);
-
-   swap_vec_element_size = 0;
-
-   /*
-    * swap extra data in request - assuming all data
-    * (if available) are arrays of 4 bytes components !
-    */
-   if (req->length > sz_xGLXSingleReq/4) {
-      int *data = (int *)(req+1);
-      int count = req->length - sz_xGLXSingleReq/4;
-      __GLX_SWAP_INT_ARRAY(data, count );
-   }
-
-   return( __glXForwardSingleReq( cl, pc ) );
-}
-
-int __glXForwardPipe0WithReplySwap( __GLXclientState *cl, GLbyte *pc )
-{
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   __GLX_DECLARE_SWAP_VARIABLES;
-
-   __GLX_SWAP_SHORT(&req->length);
-   __GLX_SWAP_INT(&req->contextTag);
-
-   swap_vec_element_size = 0;
-
-   /*
-    * swap extra data in request - assuming all data
-    * (if available) are arrays of 4 bytes components !
-    */
-   if (req->length > sz_xGLXSingleReq/4) {
-      int *data = (int *)(req+1);
-      int count = req->length - sz_xGLXSingleReq/4;
-      __GLX_SWAP_INT_ARRAY(data, count );
-   }
-
-   return( __glXForwardPipe0WithReply( cl, pc ) );
-}
-
-int __glXForwardPipe0WithReplySwapsv( __GLXclientState *cl, GLbyte *pc )
-{
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   __GLX_DECLARE_SWAP_VARIABLES;
-
-   __GLX_SWAP_SHORT(&req->length);
-   __GLX_SWAP_INT(&req->contextTag);
-
-   swap_vec_element_size = 2;
-
-   /*
-    * swap extra data in request - assuming all data
-    * (if available) are arrays of 4 bytes components !
-    */
-   if (req->length > sz_xGLXSingleReq/4) {
-      int *data = (int *)(req+1);
-      int count = req->length - sz_xGLXSingleReq/4;
-      __GLX_SWAP_INT_ARRAY(data, count );
-   }
-
-
-   return( __glXForwardPipe0WithReply( cl, pc ) );
-}
-
-int __glXForwardPipe0WithReplySwapiv( __GLXclientState *cl, GLbyte *pc )
-{
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   __GLX_DECLARE_SWAP_VARIABLES;
-
-   __GLX_SWAP_SHORT(&req->length);
-   __GLX_SWAP_INT(&req->contextTag);
-
-   swap_vec_element_size = 4;
-
-   /*
-    * swap extra data in request - assuming all data
-    * (if available) are arrays of 4 bytes components !
-    */
-   if (req->length > sz_xGLXSingleReq/4) {
-      int *data = (int *)(req+1);
-      int count = req->length - sz_xGLXSingleReq/4;
-      __GLX_SWAP_INT_ARRAY(data, count );
-   }
-
-
-   return( __glXForwardPipe0WithReply( cl, pc ) );
-}
-
-int __glXForwardPipe0WithReplySwapdv( __GLXclientState *cl, GLbyte *pc )
-{
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   __GLX_DECLARE_SWAP_VARIABLES;
-
-   __GLX_SWAP_SHORT(&req->length);
-   __GLX_SWAP_INT(&req->contextTag);
-
-   swap_vec_element_size = 8;
-
-   /*
-    * swap extra data in request - assuming all data
-    * (if available) are arrays of 4 bytes components !
-    */
-   if (req->length > sz_xGLXSingleReq/4) {
-      int *data = (int *)(req+1);
-      int count = req->length - sz_xGLXSingleReq/4;
-      __GLX_SWAP_INT_ARRAY(data, count );
-   }
-
-
-   return( __glXForwardPipe0WithReply( cl, pc ) );
-}
-
-int __glXForwardAllWithReplySwap( __GLXclientState *cl, GLbyte *pc )
-{
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   __GLX_DECLARE_SWAP_VARIABLES;
-
-   __GLX_SWAP_SHORT(&req->length);
-   __GLX_SWAP_INT(&req->contextTag);
-
-   swap_vec_element_size = 0;
-
-   /*
-    * swap extra data in request - assuming all data
-    * (if available) are arrays of 4 bytes components !
-    */
-   if (req->length > sz_xGLXSingleReq/4) {
-      int *data = (int *)(req+1);
-      int count = req->length - sz_xGLXSingleReq/4;
-      __GLX_SWAP_INT_ARRAY(data, count );
-   }
-
-
-   return( __glXForwardAllWithReply( cl, pc ) );
-}
-
-int __glXForwardAllWithReplySwapsv( __GLXclientState *cl, GLbyte *pc )
-{
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   __GLX_DECLARE_SWAP_VARIABLES;
-
-   __GLX_SWAP_SHORT(&req->length);
-   __GLX_SWAP_INT(&req->contextTag);
-
-   swap_vec_element_size = 2;
-
-   /*
-    * swap extra data in request - assuming all data
-    * (if available) are arrays of 4 bytes components !
-    */
-   if (req->length > sz_xGLXSingleReq/4) {
-      int *data = (int *)(req+1);
-      int count = req->length - sz_xGLXSingleReq/4;
-      __GLX_SWAP_INT_ARRAY(data, count );
-   }
-
-
-   return( __glXForwardAllWithReply( cl, pc ) );
-}
-
-int __glXForwardAllWithReplySwapiv( __GLXclientState *cl, GLbyte *pc )
-{
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   __GLX_DECLARE_SWAP_VARIABLES;
-
-   __GLX_SWAP_SHORT(&req->length);
-   __GLX_SWAP_INT(&req->contextTag);
-
-   swap_vec_element_size = 4;
-
-   /*
-    * swap extra data in request - assuming all data
-    * (if available) are arrays of 4 bytes components !
-    */
-   if (req->length > sz_xGLXSingleReq/4) {
-      int *data = (int *)(req+1);
-      int count = req->length - sz_xGLXSingleReq/4;
-      __GLX_SWAP_INT_ARRAY(data, count );
-   }
-
-
-   return( __glXForwardAllWithReply( cl, pc ) );
-}
-
-int __glXForwardAllWithReplySwapdv( __GLXclientState *cl, GLbyte *pc )
-{
-   xGLXSingleReq *req = (xGLXSingleReq *)pc;
-   __GLX_DECLARE_SWAP_VARIABLES;
-
-   __GLX_SWAP_SHORT(&req->length);
-   __GLX_SWAP_INT(&req->contextTag);
-
-   swap_vec_element_size = 8;
-
-   /*
-    * swap extra data in request - assuming all data
-    * (if available) are arrays of 4 bytes components !
-    */
-   if (req->length > sz_xGLXSingleReq/4) {
-      int *data = (int *)(req+1);
-      int count = req->length - sz_xGLXSingleReq/4;
-      __GLX_SWAP_INT_ARRAY(data, count );
-   }
-
-
-   return( __glXForwardAllWithReply( cl, pc ) );
-}
-
-static GLint __glReadPixels_size(GLenum format, GLenum type, GLint w, GLint h, 
-                          int *elementbits_return, int *rowbytes_return )
-{
-    GLint elements, esize;
-    GLint rowsize, padding;
-
-    if (w < 0 || h < 0) {
-	return -1;
-    }
-    switch (format) {
-      case GL_COLOR_INDEX:
-      case GL_STENCIL_INDEX:
-      case GL_DEPTH_COMPONENT:
-	elements = 1;
-	break;
-      case GL_RED:
-      case GL_GREEN:
-      case GL_BLUE:
-      case GL_ALPHA:
-      case GL_LUMINANCE:
-	elements = 1;
-	break;
-      case GL_LUMINANCE_ALPHA:
-	elements = 2;
-	break;
-      case GL_RGB:
-      case GL_BGR:
-	elements = 3;
-	break;
-      case GL_RGBA:
-      case GL_BGRA:
-      case GL_ABGR_EXT:
-	elements = 4;
-	break;
-      default:
-	return -1;
-    }
-    /*
-    ** According to the GLX protocol, each row must be padded to a multiple of
-    ** 4 bytes.  4 bytes also happens to be the default alignment in the pixel
-    ** store modes of the GL.
-    */
-    switch (type) {
-      case GL_BITMAP:
-	if (format == GL_COLOR_INDEX || format == GL_STENCIL_INDEX) {
-	   rowsize = ((w * elements)+7)/8;
-	   padding = rowsize % 4;
-	   if (padding) {
-	      rowsize += 4 - padding;
-	   }
-	   if (elementbits_return) *elementbits_return = elements;
-	   if (rowbytes_return) *rowbytes_return = rowsize;
-	   return (rowsize * h);
-	} else {
-	   return -1;
-	}
-      case GL_BYTE:
-      case GL_UNSIGNED_BYTE:
-	esize = 1;
-	break;
-      case GL_UNSIGNED_BYTE_3_3_2:
-      case GL_UNSIGNED_BYTE_2_3_3_REV:
-	esize = 1;
-	elements = 1;
-	break;
-      case GL_SHORT:
-      case GL_UNSIGNED_SHORT:
-	esize = 2;
-	break;
-      case GL_UNSIGNED_SHORT_5_6_5:
-      case GL_UNSIGNED_SHORT_5_6_5_REV:
-      case GL_UNSIGNED_SHORT_4_4_4_4:
-      case GL_UNSIGNED_SHORT_4_4_4_4_REV:
-      case GL_UNSIGNED_SHORT_5_5_5_1:
-      case GL_UNSIGNED_SHORT_1_5_5_5_REV:
-	esize = 2;
-	elements = 1;
-	break;
-      case GL_INT:
-      case GL_UNSIGNED_INT:
-      case GL_FLOAT:
-	esize = 4;
-	break;
-      case GL_UNSIGNED_INT_8_8_8_8:
-      case GL_UNSIGNED_INT_8_8_8_8_REV:
-      case GL_UNSIGNED_INT_10_10_10_2:
-      case GL_UNSIGNED_INT_2_10_10_10_REV:
-	esize = 4;
-	elements = 1;
-	break;
-      default:
-	return -1;
-    }
-    rowsize = w * elements * esize;
-    padding = rowsize % 4;
-    if (padding) {
-	rowsize += 4 - padding;
-    }
-
-    if (elementbits_return) *elementbits_return = esize*elements*8;
-    if (rowbytes_return) *rowbytes_return = rowsize;
-
-    return (rowsize * h);
-}
-
-static int intersectRect( int x1, int x2, int y1, int y2,
-                    int X1, int X2, int Y1, int Y2,
-		    int *ix1, int *ix2, int *iy1, int *iy2 )
-{
-   int right = (x2 < X2 ? x2 : X2);
-   int bottom = (y2 < Y2 ? y2 : Y2);
-   int left = (x1 > X1 ? x1 : X1);
-   int top = (y1 > Y1 ? y1 : Y1);
-   int width = right - left + 1;
-   int height = bottom - top + 1;
-
-   if ( (width <= 0) || (height <= 0) ) {
-      *ix1 = *ix2 = *iy1 = *iy2 = 0;
-      return(0);
-   }
-   else {
-      *ix1 = left;
-      *ix2 = right;
-      *iy1 = top;
-      *iy2 = bottom;
-      return( width * height );
-   }
-
-}
-
-int __glXDisp_ReadPixels(__GLXclientState *cl, GLbyte *pc)
-{
-    xGLXSingleReq *req = (xGLXSingleReq *)pc;
-    xGLXSingleReq *be_req;
-    xGLXReadPixelsReply reply;
-    xGLXReadPixelsReply be_reply;
-    GLbyte *be_pc;
-    GLint x,y;
-    GLsizei width, height;
-    GLenum format, type;
-    GLboolean swapBytes, lsbFirst;
-    ClientPtr client = cl->client;
-    DrawablePtr pDraw;
-    int error;
-    __GLXcontext *glxc;
-    int from_screen = 0;
-    int to_screen = 0;
-    char *buf;
-    int buf_size;
-    int s;
-    int win_x1, win_x2;
-    int win_y1, win_y2;
-    int ebits, rowsize;
-    __GLX_DECLARE_SWAP_VARIABLES;
-
-    if (client->swapped) {
-       __GLX_SWAP_INT(&req->contextTag);
-    }
-
-    glxc = __glXLookupContextByTag(cl, req->contextTag);
-    if (!glxc) {
-	return 0;
-    }
-    from_screen = to_screen = glxc->pScreen->myNum;
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension) {
-       from_screen = 0;
-       to_screen = screenInfo.numScreens - 1;
-    }
-#endif
-
-    pc += sz_xGLXSingleReq;
-    x = *(GLint *)(pc + 0);
-    y = *(GLint *)(pc + 4);
-    width = *(GLsizei *)(pc + 8);
-    height = *(GLsizei *)(pc + 12);
-    format = *(GLenum *)(pc + 16);
-    type = *(GLenum *)(pc + 20);
-    swapBytes = *(GLboolean *)(pc + 24);
-    lsbFirst = *(GLboolean *)(pc + 25);
-
-    if (client->swapped) {
-       __GLX_SWAP_INT(&x);
-       __GLX_SWAP_INT(&y);
-       __GLX_SWAP_INT(&width);
-       __GLX_SWAP_INT(&height);
-       __GLX_SWAP_INT(&format);
-       __GLX_SWAP_INT(&type);
-       swapBytes = !swapBytes;
-    }
-
-    buf_size = __glReadPixels_size(format,type,width,height, &ebits, &rowsize);
-    if (buf_size > 0) {
-       buf = (char *) Xalloc( buf_size );
-       if ( !buf ) {
-	  return( BadAlloc );
-       }
-    }
-    else {
-       buf_size = 0;
-    }
-
-    if (buf_size > 0) {
-       /*
-	* Get the current drawable this context is bound to
-	*/
-       pDraw = __glXLookupDrawableByTag( cl, req->contextTag );
-       win_x1 = pDraw->x + x;
-       win_x2 = win_x1 + width - 1;
-       win_y1 = (dmxGlobalHeight - pDraw->y - pDraw->height) + y;
-       win_y2 = win_y1 + height - 1;
-       if (pDraw->type != DRAWABLE_WINDOW) {
-	  from_screen = to_screen = 0;
-       }
-
-       for (s=from_screen; s<=to_screen; s++) {
-	  DMXScreenInfo *dmxScreen = &dmxScreens[s];
-	  Display *dpy = GetBackEndDisplay(cl,s);
-	  int scr_x1 = dmxScreen->rootXOrigin;
-	  int scr_x2 = dmxScreen->rootXOrigin + dmxScreen->scrnWidth - 1;
-	  int scr_y1 = dmxScreen->rootYOrigin;
-	  int scr_y2 = dmxScreen->rootYOrigin + dmxScreen->scrnHeight - 1;
-	  int wx1, wx2, wy1, wy2;
-	  int sx, sy, sw, sh;
-	  int npixels;
-
-	  /*
-	   * find the window portion that is on the current screen
-	   */
-	  if (pDraw->type == DRAWABLE_WINDOW) {
-	     npixels = intersectRect( scr_x1, scr_x2, scr_y1, scr_y2,
-		   win_x1, win_x2, win_y1, win_y2,
-		   &wx1, &wx2, &wy1, &wy2 );
-	  }
-	  else {
-	     wx1 = win_x1;
-	     wx2 = win_x2;
-	     wy1 = win_y1;
-	     wy2 = win_y2;
-	     npixels = (wx2-wx1+1) * (wy2-wy1+1);
-	  }
-
-   	  if (npixels > 0) {
-
-   	     /* send the request to the back-end server */
-   	     LockDisplay(dpy);
-   	     GetReqExtra(GLXSingle,__GLX_PAD(26),be_req);
-   	     be_req->reqType = dmxScreen->glxMajorOpcode;
-   	     be_req->glxCode = X_GLsop_ReadPixels;
-   	     be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,s);
-   	     be_pc = ((GLbyte *)(be_req) + sz_xGLXSingleReq);
-
-   	     sx = wx1 - pDraw->x;
-   	     sy = wy1 - (dmxGlobalHeight - pDraw->y - pDraw->height); 
-   	     sw = (wx2-wx1+1); 
-   	     sh = (wy2-wy1+1); 
-	     
-	     *(GLint *)(be_pc + 0) = sx;    /* x */
-	     *(GLint *)(be_pc + 4) = sy;    /* y */
-	     *(GLsizei *)(be_pc + 8) = sw;    /* width */
-	     *(GLsizei *)(be_pc + 12) = sh;   /* height */
-	     *(GLenum *)(be_pc + 16) = format; 
-	     *(GLenum *)(be_pc + 20) = type;
-	     *(GLboolean *)(be_pc + 24) = swapBytes;
-	     *(GLboolean *)(be_pc + 25) = lsbFirst;
-
-	     _XReply(dpy, (xReply*) &be_reply, 0, False);
-         
-	     if (be_reply.length > 0) {
-		char *be_buf;
-		int be_buf_size = be_reply.length << 2;
-
-		be_buf = (char *) Xalloc( be_buf_size );
-		if (be_buf) {
-		   _XRead(dpy, be_buf, be_buf_size);
-
-		   /* copy pixels data to the right location of the */
-		   /* reply buffer */
-		   if ( type != GL_BITMAP ) {
-		      int pbytes = ebits / 8;
-		      char *dst = buf + (sy-y)*rowsize + (sx-x)*pbytes;
-		      char *src = be_buf;
-		      int pad = (pbytes * sw) % 4;
-		      int r;
-
-		      for (r=0; r<sh; r++) {
-			 memcpy( dst, src, pbytes*sw );
-			 dst += rowsize;
-			 src += (pbytes*sw + (pad ? 4-pad : 0) );
-		      }
-		   }
-		   else {
-		      /* this is a GL_BITMAP pixel type, should copy bits */
-		      int r;
-		      int src_rowsize = bits_to_bytes(sw * ebits);
-		      int src_pad = src_rowsize % 4;
-                      if ( src_pad ) {
-			 src_rowsize += (4 - src_pad);
-		      }
-
-		      for (r=0; r<sh; r++) {
-			 unsigned char dst_mask = 0x80 >> (sx % 8);
-			 unsigned char src_mask = 0x80;
-			 char *dst = buf + (sy-y+r)*rowsize + (sx-x)/8;
-			 char *src = be_buf + r*src_rowsize;
-			 int b;
-
-			 for (b=0; b<sw*ebits; b++) {
-			    if ( *src & src_mask ) {
-			       *dst |= dst_mask;
-			    }
-			    else {
-			       *dst &= ~dst_mask;
-			    }
-
-			    if (dst_mask > 1) dst_mask >>= 1;
-			    else { 
-			       dst_mask = 0x80;
-			       dst++;
-			    }
-
-			    if (src_mask > 1) src_mask >>= 1;
-			    else {
-			       src_mask = 0x80;
-			       src++;
-			    }
-			 }
-		      }
-
-		   }
-
-		   Xfree( be_buf );
-		}
-		else {
-		   /* Throw data on the floor */
-		   _XEatData(dpy, be_buf_size);
-		   Xfree( buf );
-		   return BadAlloc;
-		}
-	     }
-
-	     UnlockDisplay(dpy);
-	     SyncHandle();
-
-	  } /* of npixels > 0 */ 
-
-       }  /* of for loop */
-
-    } /* of if buf_size > 0 */
-
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.length = buf_size >> 2;
-
-    if (client->swapped) {
-       __GLX_SWAP_SHORT(&reply.sequenceNumber);
-       __GLX_SWAP_INT(&reply.length);
-    }
-
-    WriteToClient(client, sizeof(xGLXReadPixelsReply),(char *)&reply);
-    if (buf_size > 0) {
-       WriteToClient(client, buf_size, (char *)buf);
-       Xfree( buf );
-    }
-
-    return Success;
-}
-
-int __glXDispSwap_GetTexImage(__GLXclientState *cl, GLbyte *pc)
-{
-    __GLX_DECLARE_SWAP_VARIABLES;
-    GLbyte *lpc = pc;
-
-    lpc += sz_xGLXSingleReq;
-    __GLX_SWAP_INT(lpc+0);
-    __GLX_SWAP_INT(lpc+4);
-    __GLX_SWAP_INT(lpc+8);
-    __GLX_SWAP_INT(lpc+12);
-
-    /* reverse swapBytes */
-    *(GLboolean *)(lpc + 16) = ! *(GLboolean *)(lpc + 16);
-
-    return( __glXForwardPipe0WithReplySwap( cl, pc ) );
-}
-
-int __glXDispSwap_GetColorTable(__GLXclientState *cl, GLbyte *pc)
-{
-    __GLX_DECLARE_SWAP_VARIABLES;
-    GLbyte *lpc = pc;
-
-    lpc += sz_xGLXSingleReq;
-    __GLX_SWAP_INT(lpc+0);
-    __GLX_SWAP_INT(lpc+4);
-    __GLX_SWAP_INT(lpc+8);
-
-    /* reverse swapBytes */
-    *(GLboolean *)(lpc + 12) = ! *(GLboolean *)(lpc + 12);
-
-    return( __glXForwardPipe0WithReplySwap( cl, pc ) );
-}
-
-
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED */

+/*

+ * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)

+ * Copyright (C) 1991-2000 Silicon Graphics, 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, 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 including the dates of first publication and

+ * either this permission notice or a reference to

+ * http://oss.sgi.com/projects/FreeB/

+ * 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

+ * SILICON GRAPHICS, INC. 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 Silicon Graphics, Inc.

+ * shall not be used in advertising or otherwise to promote the sale, use or

+ * other dealings in this Software without prior written authorization from

+ * Silicon Graphics, Inc.

+ */

+

+#ifdef HAVE_DMX_CONFIG_H

+#include <dmx-config.h>

+#endif

+

+#include "dmx.h"

+#include "dmxwindow.h"

+#include "dmxpixmap.h"

+#include "dmxfont.h"

+#include "dmxcb.h"

+

+#undef Xmalloc

+#undef Xcalloc

+#undef Xrealloc

+#undef Xfree

+

+#include "glxserver.h"

+#include "glxext.h"

+#include "g_disptab.h"

+/* #include "g_disptab_EXT.h" */

+#include "unpack.h"

+#include "glxutil.h"

+

+#include "GL/glxproto.h"

+

+#ifdef PANORAMIX

+#include "panoramiXsrv.h"

+#endif

+

+/*

+ * GetReqSingle - this is the equivalent of GetReq macro

+ *    from Xlibint.h but it does not set the reqType field (the opcode).

+ *    this is because the GL single opcodes has different naming convension

+ *    the other X opcodes (ie. X_GLsop_GetFloatv).

+ */

+#if (defined(__STDC__) && !defined(UNIXCPP)) || defined(ANSICPP)

+#define GetReqSingle(name, req) \

+        WORD64ALIGN\

+	if ((dpy->bufptr + SIZEOF(x##name##Req)) > dpy->bufmax)\

+		_XFlush(dpy);\

+	req = (x##name##Req *)(dpy->last_req = dpy->bufptr);\

+	req->length = (SIZEOF(x##name##Req))>>2;\

+	dpy->bufptr += SIZEOF(x##name##Req);\

+	dpy->request++

+

+#else  /* non-ANSI C uses empty comment instead of "##" for token concatenation */

+#define GetReqSingle(name, req) \

+        WORD64ALIGN\

+	if ((dpy->bufptr + SIZEOF(x/**/name/**/Req)) > dpy->bufmax)\

+		_XFlush(dpy);\

+	req = (x/**/name/**/Req *)(dpy->last_req = dpy->bufptr);\

+	req->length = (SIZEOF(x/**/name/**/Req))>>2;\

+	dpy->bufptr += SIZEOF(x/**/name/**/Req);\

+	dpy->request++

+#endif

+

+#define X_GLXSingle 0   /* needed by GetReqExtra */

+

+extern Display *GetBackEndDisplay( __GLXclientState *cl, int s );

+extern int GetCurrentBackEndTag(__GLXclientState *cl, GLXContextTag tag, int s);

+

+static int swap_vec_element_size = 0;

+

+static void SendSwappedReply( ClientPtr client,

+                              xGLXSingleReply *reply, 

+			      char *buf,

+			      int   buf_size )

+{

+   __GLX_DECLARE_SWAP_VARIABLES;

+   __GLX_SWAP_SHORT(&reply->sequenceNumber);

+   __GLX_SWAP_INT(&reply->length);

+   __GLX_SWAP_INT(&reply->retval);

+   __GLX_SWAP_INT(&reply->size);

+

+   if ( (buf_size == 0) && (swap_vec_element_size > 0) ) {

+      /*

+       * the reply has single component - need to swap pad3

+       */

+      if (swap_vec_element_size == 2) {

+	 __GLX_SWAP_SHORT(&reply->pad3);

+      }

+      else if (swap_vec_element_size == 4) {

+	 __GLX_SWAP_INT(&reply->pad3);

+	 __GLX_SWAP_INT(&reply->pad4);    /* some requests use also pad4

+                                          * i.e GetConvolutionFilter

+					  */

+      }

+      else if (swap_vec_element_size == 8) {

+	 __GLX_SWAP_DOUBLE(&reply->pad3);

+      }

+   }

+   else if ( (buf_size > 0) && (swap_vec_element_size > 0) ) {

+      /*

+       * the reply has vector of elements which needs to be swapped

+       */

+      int vsize = buf_size / swap_vec_element_size;

+      char *p = buf;

+      int i;

+

+      for (i=0; i<vsize; i++) {

+	 if (swap_vec_element_size == 2) {

+	    __GLX_SWAP_SHORT(p);

+	 }

+	 else if (swap_vec_element_size == 4) {

+	    __GLX_SWAP_INT(p);

+	 }

+	 else if (swap_vec_element_size == 8) {

+	    __GLX_SWAP_DOUBLE(p);

+	 }

+

+	 p += swap_vec_element_size;

+      }

+

+      /*

+       * swap pad words as well - for case that some single reply uses

+       * them as well

+       */

+      __GLX_SWAP_INT(&reply->pad3);

+      __GLX_SWAP_INT(&reply->pad4);

+      __GLX_SWAP_INT(&reply->pad5);

+      __GLX_SWAP_INT(&reply->pad6);

+

+   }

+

+    WriteToClient(client, sizeof(xGLXSingleReply),(char *)reply);

+    if (buf_size > 0)

+       WriteToClient(client, buf_size, (char *)buf);

+

+}

+

+int __glXForwardSingleReq( __GLXclientState *cl, GLbyte *pc )

+{

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   xGLXSingleReq *be_req;

+    __GLXcontext *glxc;

+   int from_screen = 0;

+   int to_screen = 0;

+   int buf_size;

+   int s;

+

+    glxc = __glXLookupContextByTag(cl, req->contextTag);

+    if (!glxc) {

+	return 0;

+    }

+    from_screen = to_screen = glxc->pScreen->myNum;

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    pc += sz_xGLXSingleReq;

+    buf_size = (req->length << 2) - sz_xGLXSingleReq;

+

+    /*

+     * just forward the request to back-end server(s)

+     */

+    for (s=from_screen; s<=to_screen; s++) {

+       DMXScreenInfo *dmxScreen = &dmxScreens[s];

+       Display *dpy = GetBackEndDisplay(cl,s);

+

+       LockDisplay(dpy);

+       GetReqSingle(GLXSingle,be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = req->glxCode;

+       be_req->length = req->length;

+       be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,s);

+       if (buf_size > 0) 

+	  _XSend(dpy, (const char *)pc, buf_size);

+       UnlockDisplay(dpy);

+       SyncHandle();

+

+       if (req->glxCode == X_GLsop_Flush) {

+	  XFlush(dpy);

+       }

+

+    }

+

+    return Success;

+}

+

+int __glXForwardPipe0WithReply( __GLXclientState *cl, GLbyte *pc )

+{

+   ClientPtr client = cl->client;

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   xGLXSingleReq *be_req;

+   xGLXSingleReply reply;

+   xGLXSingleReply be_reply;

+    __GLXcontext *glxc;

+   int buf_size;

+   char *be_buf;

+   int   be_buf_size;

+   DMXScreenInfo *dmxScreen;

+   Display *dpy;

+

+    glxc = __glXLookupContextByTag(cl, req->contextTag);

+    if (!glxc) {

+	return __glXBadContext;

+    }

+

+    pc += sz_xGLXSingleReq;

+    buf_size = (req->length << 2) - sz_xGLXSingleReq;

+

+    dmxScreen = &dmxScreens[glxc->pScreen->myNum];

+    dpy = GetBackEndDisplay(cl, glxc->pScreen->myNum);

+

+    /* 

+     * send the request to the first back-end server

+     */

+    LockDisplay(dpy);

+    GetReqSingle(GLXSingle,be_req);

+    be_req->reqType = dmxScreen->glxMajorOpcode;

+    be_req->glxCode = req->glxCode;

+    be_req->length = req->length;

+    be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,glxc->pScreen->myNum);

+    if (buf_size > 0) 

+       _XSend(dpy, (const char *)pc, buf_size);

+

+    /*

+     * get the reply from the back-end server

+     */

+    _XReply(dpy, (xReply*) &be_reply, 0, False);

+    be_buf_size = be_reply.length << 2;

+    if (be_buf_size > 0) {

+       be_buf = (char *)malloc( be_buf_size );

+       if (be_buf) {

+	  _XRead(dpy, be_buf, be_buf_size);

+       }

+       else {

+	  /* Throw data on the floor */

+	  _XEatData(dpy, be_buf_size);

+	  return BadAlloc;

+       }

+    }

+

+    UnlockDisplay(dpy);

+    SyncHandle();

+

+    /*

+     * send the reply to the client

+     */

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = be_reply.length;

+    reply.retval = be_reply.retval;

+    reply.size = be_reply.size;

+    reply.pad3 = be_reply.pad3;

+    reply.pad4 = be_reply.pad4;

+

+    if (client->swapped) {

+       SendSwappedReply( client, &reply, be_buf, be_buf_size );

+    }

+    else {

+       WriteToClient(client, sizeof(xGLXSingleReply),(char *)&reply);

+       if (be_buf_size > 0)

+	  WriteToClient(client, be_buf_size, (char *)be_buf);

+    }

+

+    if (be_buf_size > 0) Xfree(be_buf);

+

+    return Success;

+}

+

+int __glXForwardAllWithReply( __GLXclientState *cl, GLbyte *pc )

+{

+   ClientPtr client = cl->client;

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   xGLXSingleReq *be_req;

+   xGLXSingleReply reply;

+   xGLXSingleReply be_reply;

+    __GLXcontext *glxc;

+   int buf_size;

+   char *be_buf;

+   int   be_buf_size;

+   int from_screen = 0;

+   int to_screen = 0;

+   int s;

+

+   DMXScreenInfo *dmxScreen;

+   Display *dpy;

+

+    glxc = __glXLookupContextByTag(cl, req->contextTag);

+    if (!glxc) {

+	return 0;

+    }

+    from_screen = to_screen = glxc->pScreen->myNum;

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    pc += sz_xGLXSingleReq;

+    buf_size = (req->length << 2) - sz_xGLXSingleReq;

+

+    /* 

+     * send the request to the first back-end server(s)

+     */

+    for (s=to_screen; s>=from_screen; s--) {

+       dmxScreen = &dmxScreens[s];

+       dpy = GetBackEndDisplay(cl,s);

+

+       LockDisplay(dpy);

+       GetReqSingle(GLXSingle,be_req);

+       be_req->reqType = dmxScreen->glxMajorOpcode;

+       be_req->glxCode = req->glxCode;

+       be_req->length = req->length;

+       be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,s);

+       if (buf_size > 0) 

+	  _XSend(dpy, (const char *)pc, buf_size);

+

+       /*

+	* get the reply from the back-end server

+	*/

+       _XReply(dpy, (xReply*) &be_reply, 0, False);

+       be_buf_size = be_reply.length << 2;

+       if (be_buf_size > 0) {

+	  be_buf = (char *)malloc( be_buf_size );

+	  if (be_buf) {

+	     _XRead(dpy, be_buf, be_buf_size);

+	  }

+	  else {

+	     /* Throw data on the floor */

+	     _XEatData(dpy, be_buf_size);

+	     return BadAlloc;

+	  }

+       }

+

+       UnlockDisplay(dpy);

+       SyncHandle();

+

+       if (s > from_screen && be_buf_size > 0) {

+	  Xfree(be_buf);

+       }

+    }

+

+    /*

+     * send the reply to the client

+     */

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = be_reply.length;

+    reply.retval = be_reply.retval;

+    reply.size = be_reply.size;

+    reply.pad3 = be_reply.pad3;

+    reply.pad4 = be_reply.pad4;

+

+    if (client->swapped) {

+       SendSwappedReply( client, &reply, be_buf, be_buf_size );

+    }

+    else {

+       WriteToClient(client, sizeof(xGLXSingleReply),(char *)&reply);

+       if (be_buf_size > 0)

+	  WriteToClient(client, be_buf_size, (char *)be_buf);

+    }

+

+    if (be_buf_size > 0) Xfree(be_buf);

+

+    return Success;

+}

+

+int __glXForwardSingleReqSwap( __GLXclientState *cl, GLbyte *pc )

+{

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   __GLX_DECLARE_SWAP_VARIABLES;

+

+   __GLX_SWAP_SHORT(&req->length);

+   __GLX_SWAP_INT(&req->contextTag);

+

+   swap_vec_element_size = 0;

+

+   /*

+    * swap extra data in request - assuming all data

+    * (if available) are arrays of 4 bytes components !

+    */

+   if (req->length > sz_xGLXSingleReq/4) {

+      int *data = (int *)(req+1);

+      int count = req->length - sz_xGLXSingleReq/4;

+      __GLX_SWAP_INT_ARRAY(data, count );

+   }

+

+   return( __glXForwardSingleReq( cl, pc ) );

+}

+

+int __glXForwardPipe0WithReplySwap( __GLXclientState *cl, GLbyte *pc )

+{

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   __GLX_DECLARE_SWAP_VARIABLES;

+

+   __GLX_SWAP_SHORT(&req->length);

+   __GLX_SWAP_INT(&req->contextTag);

+

+   swap_vec_element_size = 0;

+

+   /*

+    * swap extra data in request - assuming all data

+    * (if available) are arrays of 4 bytes components !

+    */

+   if (req->length > sz_xGLXSingleReq/4) {

+      int *data = (int *)(req+1);

+      int count = req->length - sz_xGLXSingleReq/4;

+      __GLX_SWAP_INT_ARRAY(data, count );

+   }

+

+   return( __glXForwardPipe0WithReply( cl, pc ) );

+}

+

+int __glXForwardPipe0WithReplySwapsv( __GLXclientState *cl, GLbyte *pc )

+{

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   __GLX_DECLARE_SWAP_VARIABLES;

+

+   __GLX_SWAP_SHORT(&req->length);

+   __GLX_SWAP_INT(&req->contextTag);

+

+   swap_vec_element_size = 2;

+

+   /*

+    * swap extra data in request - assuming all data

+    * (if available) are arrays of 4 bytes components !

+    */

+   if (req->length > sz_xGLXSingleReq/4) {

+      int *data = (int *)(req+1);

+      int count = req->length - sz_xGLXSingleReq/4;

+      __GLX_SWAP_INT_ARRAY(data, count );

+   }

+

+

+   return( __glXForwardPipe0WithReply( cl, pc ) );

+}

+

+int __glXForwardPipe0WithReplySwapiv( __GLXclientState *cl, GLbyte *pc )

+{

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   __GLX_DECLARE_SWAP_VARIABLES;

+

+   __GLX_SWAP_SHORT(&req->length);

+   __GLX_SWAP_INT(&req->contextTag);

+

+   swap_vec_element_size = 4;

+

+   /*

+    * swap extra data in request - assuming all data

+    * (if available) are arrays of 4 bytes components !

+    */

+   if (req->length > sz_xGLXSingleReq/4) {

+      int *data = (int *)(req+1);

+      int count = req->length - sz_xGLXSingleReq/4;

+      __GLX_SWAP_INT_ARRAY(data, count );

+   }

+

+

+   return( __glXForwardPipe0WithReply( cl, pc ) );

+}

+

+int __glXForwardPipe0WithReplySwapdv( __GLXclientState *cl, GLbyte *pc )

+{

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   __GLX_DECLARE_SWAP_VARIABLES;

+

+   __GLX_SWAP_SHORT(&req->length);

+   __GLX_SWAP_INT(&req->contextTag);

+

+   swap_vec_element_size = 8;

+

+   /*

+    * swap extra data in request - assuming all data

+    * (if available) are arrays of 4 bytes components !

+    */

+   if (req->length > sz_xGLXSingleReq/4) {

+      int *data = (int *)(req+1);

+      int count = req->length - sz_xGLXSingleReq/4;

+      __GLX_SWAP_INT_ARRAY(data, count );

+   }

+

+

+   return( __glXForwardPipe0WithReply( cl, pc ) );

+}

+

+int __glXForwardAllWithReplySwap( __GLXclientState *cl, GLbyte *pc )

+{

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   __GLX_DECLARE_SWAP_VARIABLES;

+

+   __GLX_SWAP_SHORT(&req->length);

+   __GLX_SWAP_INT(&req->contextTag);

+

+   swap_vec_element_size = 0;

+

+   /*

+    * swap extra data in request - assuming all data

+    * (if available) are arrays of 4 bytes components !

+    */

+   if (req->length > sz_xGLXSingleReq/4) {

+      int *data = (int *)(req+1);

+      int count = req->length - sz_xGLXSingleReq/4;

+      __GLX_SWAP_INT_ARRAY(data, count );

+   }

+

+

+   return( __glXForwardAllWithReply( cl, pc ) );

+}

+

+int __glXForwardAllWithReplySwapsv( __GLXclientState *cl, GLbyte *pc )

+{

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   __GLX_DECLARE_SWAP_VARIABLES;

+

+   __GLX_SWAP_SHORT(&req->length);

+   __GLX_SWAP_INT(&req->contextTag);

+

+   swap_vec_element_size = 2;

+

+   /*

+    * swap extra data in request - assuming all data

+    * (if available) are arrays of 4 bytes components !

+    */

+   if (req->length > sz_xGLXSingleReq/4) {

+      int *data = (int *)(req+1);

+      int count = req->length - sz_xGLXSingleReq/4;

+      __GLX_SWAP_INT_ARRAY(data, count );

+   }

+

+

+   return( __glXForwardAllWithReply( cl, pc ) );

+}

+

+int __glXForwardAllWithReplySwapiv( __GLXclientState *cl, GLbyte *pc )

+{

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   __GLX_DECLARE_SWAP_VARIABLES;

+

+   __GLX_SWAP_SHORT(&req->length);

+   __GLX_SWAP_INT(&req->contextTag);

+

+   swap_vec_element_size = 4;

+

+   /*

+    * swap extra data in request - assuming all data

+    * (if available) are arrays of 4 bytes components !

+    */

+   if (req->length > sz_xGLXSingleReq/4) {

+      int *data = (int *)(req+1);

+      int count = req->length - sz_xGLXSingleReq/4;

+      __GLX_SWAP_INT_ARRAY(data, count );

+   }

+

+

+   return( __glXForwardAllWithReply( cl, pc ) );

+}

+

+int __glXForwardAllWithReplySwapdv( __GLXclientState *cl, GLbyte *pc )

+{

+   xGLXSingleReq *req = (xGLXSingleReq *)pc;

+   __GLX_DECLARE_SWAP_VARIABLES;

+

+   __GLX_SWAP_SHORT(&req->length);

+   __GLX_SWAP_INT(&req->contextTag);

+

+   swap_vec_element_size = 8;

+

+   /*

+    * swap extra data in request - assuming all data

+    * (if available) are arrays of 4 bytes components !

+    */

+   if (req->length > sz_xGLXSingleReq/4) {

+      int *data = (int *)(req+1);

+      int count = req->length - sz_xGLXSingleReq/4;

+      __GLX_SWAP_INT_ARRAY(data, count );

+   }

+

+

+   return( __glXForwardAllWithReply( cl, pc ) );

+}

+

+static GLint __glReadPixels_size(GLenum format, GLenum type, GLint w, GLint h, 

+                          int *elementbits_return, int *rowbytes_return )

+{

+    GLint elements, esize;

+    GLint rowsize, padding;

+

+    if (w < 0 || h < 0) {

+	return -1;

+    }

+    switch (format) {

+      case GL_COLOR_INDEX:

+      case GL_STENCIL_INDEX:

+      case GL_DEPTH_COMPONENT:

+	elements = 1;

+	break;

+      case GL_RED:

+      case GL_GREEN:

+      case GL_BLUE:

+      case GL_ALPHA:

+      case GL_LUMINANCE:

+	elements = 1;

+	break;

+      case GL_LUMINANCE_ALPHA:

+	elements = 2;

+	break;

+      case GL_RGB:

+      case GL_BGR:

+	elements = 3;

+	break;

+      case GL_RGBA:

+      case GL_BGRA:

+      case GL_ABGR_EXT:

+	elements = 4;

+	break;

+      default:

+	return -1;

+    }

+    /*

+    ** According to the GLX protocol, each row must be padded to a multiple of

+    ** 4 bytes.  4 bytes also happens to be the default alignment in the pixel

+    ** store modes of the GL.

+    */

+    switch (type) {

+      case GL_BITMAP:

+	if (format == GL_COLOR_INDEX || format == GL_STENCIL_INDEX) {

+	   rowsize = ((w * elements)+7)/8;

+	   padding = rowsize % 4;

+	   if (padding) {

+	      rowsize += 4 - padding;

+	   }

+	   if (elementbits_return) *elementbits_return = elements;

+	   if (rowbytes_return) *rowbytes_return = rowsize;

+	   return (rowsize * h);

+	} else {

+	   return -1;

+	}

+      case GL_BYTE:

+      case GL_UNSIGNED_BYTE:

+	esize = 1;

+	break;

+      case GL_UNSIGNED_BYTE_3_3_2:

+      case GL_UNSIGNED_BYTE_2_3_3_REV:

+	esize = 1;

+	elements = 1;

+	break;

+      case GL_SHORT:

+      case GL_UNSIGNED_SHORT:

+	esize = 2;

+	break;

+      case GL_UNSIGNED_SHORT_5_6_5:

+      case GL_UNSIGNED_SHORT_5_6_5_REV:

+      case GL_UNSIGNED_SHORT_4_4_4_4:

+      case GL_UNSIGNED_SHORT_4_4_4_4_REV:

+      case GL_UNSIGNED_SHORT_5_5_5_1:

+      case GL_UNSIGNED_SHORT_1_5_5_5_REV:

+	esize = 2;

+	elements = 1;

+	break;

+      case GL_INT:

+      case GL_UNSIGNED_INT:

+      case GL_FLOAT:

+	esize = 4;

+	break;

+      case GL_UNSIGNED_INT_8_8_8_8:

+      case GL_UNSIGNED_INT_8_8_8_8_REV:

+      case GL_UNSIGNED_INT_10_10_10_2:

+      case GL_UNSIGNED_INT_2_10_10_10_REV:

+	esize = 4;

+	elements = 1;

+	break;

+      default:

+	return -1;

+    }

+    rowsize = w * elements * esize;

+    padding = rowsize % 4;

+    if (padding) {

+	rowsize += 4 - padding;

+    }

+

+    if (elementbits_return) *elementbits_return = esize*elements*8;

+    if (rowbytes_return) *rowbytes_return = rowsize;

+

+    return (rowsize * h);

+}

+

+static int intersectRect( int x1, int x2, int y1, int y2,

+                    int X1, int X2, int Y1, int Y2,

+		    int *ix1, int *ix2, int *iy1, int *iy2 )

+{

+   int right = (x2 < X2 ? x2 : X2);

+   int bottom = (y2 < Y2 ? y2 : Y2);

+   int left = (x1 > X1 ? x1 : X1);

+   int top = (y1 > Y1 ? y1 : Y1);

+   int width = right - left + 1;

+   int height = bottom - top + 1;

+

+   if ( (width <= 0) || (height <= 0) ) {

+      *ix1 = *ix2 = *iy1 = *iy2 = 0;

+      return(0);

+   }

+   else {

+      *ix1 = left;

+      *ix2 = right;

+      *iy1 = top;

+      *iy2 = bottom;

+      return( width * height );

+   }

+

+}

+

+int __glXDisp_ReadPixels(__GLXclientState *cl, GLbyte *pc)

+{

+    xGLXSingleReq *req = (xGLXSingleReq *)pc;

+    xGLXSingleReq *be_req;

+    xGLXReadPixelsReply reply;

+    xGLXReadPixelsReply be_reply;

+    GLbyte *be_pc;

+    GLint x,y;

+    GLsizei width, height;

+    GLenum format, type;

+    GLboolean swapBytes, lsbFirst;

+    ClientPtr client = cl->client;

+    DrawablePtr pDraw;

+    int error;

+    __GLXcontext *glxc;

+    int from_screen = 0;

+    int to_screen = 0;

+    char *buf;

+    int buf_size;

+    int s;

+    int win_x1, win_x2;

+    int win_y1, win_y2;

+    int ebits, rowsize;

+    __GLX_DECLARE_SWAP_VARIABLES;

+

+    if (client->swapped) {

+       __GLX_SWAP_INT(&req->contextTag);

+    }

+

+    glxc = __glXLookupContextByTag(cl, req->contextTag);

+    if (!glxc) {

+	return 0;

+    }

+    from_screen = to_screen = glxc->pScreen->myNum;

+

+#ifdef PANORAMIX

+    if (!noPanoramiXExtension) {

+       from_screen = 0;

+       to_screen = screenInfo.numScreens - 1;

+    }

+#endif

+

+    pc += sz_xGLXSingleReq;

+    x = *(GLint *)(pc + 0);

+    y = *(GLint *)(pc + 4);

+    width = *(GLsizei *)(pc + 8);

+    height = *(GLsizei *)(pc + 12);

+    format = *(GLenum *)(pc + 16);

+    type = *(GLenum *)(pc + 20);

+    swapBytes = *(GLboolean *)(pc + 24);

+    lsbFirst = *(GLboolean *)(pc + 25);

+

+    if (client->swapped) {

+       __GLX_SWAP_INT(&x);

+       __GLX_SWAP_INT(&y);

+       __GLX_SWAP_INT(&width);

+       __GLX_SWAP_INT(&height);

+       __GLX_SWAP_INT(&format);

+       __GLX_SWAP_INT(&type);

+       swapBytes = !swapBytes;

+    }

+

+    buf_size = __glReadPixels_size(format,type,width,height, &ebits, &rowsize);

+    if (buf_size > 0) {

+       buf = (char *) malloc( buf_size );

+       if ( !buf ) {

+	  return( BadAlloc );

+       }

+    }

+    else {

+       buf_size = 0;

+    }

+

+    if (buf_size > 0) {

+       /*

+	* Get the current drawable this context is bound to

+	*/

+       pDraw = __glXLookupDrawableByTag( cl, req->contextTag );

+       win_x1 = pDraw->x + x;

+       win_x2 = win_x1 + width - 1;

+       win_y1 = (dmxGlobalHeight - pDraw->y - pDraw->height) + y;

+       win_y2 = win_y1 + height - 1;

+       if (pDraw->type != DRAWABLE_WINDOW) {

+	  from_screen = to_screen = 0;

+       }

+

+       for (s=from_screen; s<=to_screen; s++) {

+	  DMXScreenInfo *dmxScreen = &dmxScreens[s];

+	  Display *dpy = GetBackEndDisplay(cl,s);

+	  int scr_x1 = dmxScreen->rootXOrigin;

+	  int scr_x2 = dmxScreen->rootXOrigin + dmxScreen->scrnWidth - 1;

+	  int scr_y1 = dmxScreen->rootYOrigin;

+	  int scr_y2 = dmxScreen->rootYOrigin + dmxScreen->scrnHeight - 1;

+	  int wx1, wx2, wy1, wy2;

+	  int sx, sy, sw, sh;

+	  int npixels;

+

+	  /*

+	   * find the window portion that is on the current screen

+	   */

+	  if (pDraw->type == DRAWABLE_WINDOW) {

+	     npixels = intersectRect( scr_x1, scr_x2, scr_y1, scr_y2,

+		   win_x1, win_x2, win_y1, win_y2,

+		   &wx1, &wx2, &wy1, &wy2 );

+	  }

+	  else {

+	     wx1 = win_x1;

+	     wx2 = win_x2;

+	     wy1 = win_y1;

+	     wy2 = win_y2;

+	     npixels = (wx2-wx1+1) * (wy2-wy1+1);

+	  }

+

+   	  if (npixels > 0) {

+

+   	     /* send the request to the back-end server */

+   	     LockDisplay(dpy);

+   	     GetReqExtra(GLXSingle,__GLX_PAD(26),be_req);

+   	     be_req->reqType = dmxScreen->glxMajorOpcode;

+   	     be_req->glxCode = X_GLsop_ReadPixels;

+   	     be_req->contextTag = GetCurrentBackEndTag(cl,req->contextTag,s);

+   	     be_pc = ((GLbyte *)(be_req) + sz_xGLXSingleReq);

+

+   	     sx = wx1 - pDraw->x;

+   	     sy = wy1 - (dmxGlobalHeight - pDraw->y - pDraw->height); 

+   	     sw = (wx2-wx1+1); 

+   	     sh = (wy2-wy1+1); 

+	     

+	     *(GLint *)(be_pc + 0) = sx;    /* x */

+	     *(GLint *)(be_pc + 4) = sy;    /* y */

+	     *(GLsizei *)(be_pc + 8) = sw;    /* width */

+	     *(GLsizei *)(be_pc + 12) = sh;   /* height */

+	     *(GLenum *)(be_pc + 16) = format; 

+	     *(GLenum *)(be_pc + 20) = type;

+	     *(GLboolean *)(be_pc + 24) = swapBytes;

+	     *(GLboolean *)(be_pc + 25) = lsbFirst;

+

+	     _XReply(dpy, (xReply*) &be_reply, 0, False);

+         

+	     if (be_reply.length > 0) {

+		char *be_buf;

+		int be_buf_size = be_reply.length << 2;

+

+		be_buf = (char *) malloc( be_buf_size );

+		if (be_buf) {

+		   _XRead(dpy, be_buf, be_buf_size);

+

+		   /* copy pixels data to the right location of the */

+		   /* reply buffer */

+		   if ( type != GL_BITMAP ) {

+		      int pbytes = ebits / 8;

+		      char *dst = buf + (sy-y)*rowsize + (sx-x)*pbytes;

+		      char *src = be_buf;

+		      int pad = (pbytes * sw) % 4;

+		      int r;

+

+		      for (r=0; r<sh; r++) {

+			 memcpy( dst, src, pbytes*sw );

+			 dst += rowsize;

+			 src += (pbytes*sw + (pad ? 4-pad : 0) );

+		      }

+		   }

+		   else {

+		      /* this is a GL_BITMAP pixel type, should copy bits */

+		      int r;

+		      int src_rowsize = bits_to_bytes(sw * ebits);

+		      int src_pad = src_rowsize % 4;

+                      if ( src_pad ) {

+			 src_rowsize += (4 - src_pad);

+		      }

+

+		      for (r=0; r<sh; r++) {

+			 unsigned char dst_mask = 0x80 >> (sx % 8);

+			 unsigned char src_mask = 0x80;

+			 char *dst = buf + (sy-y+r)*rowsize + (sx-x)/8;

+			 char *src = be_buf + r*src_rowsize;

+			 int b;

+

+			 for (b=0; b<sw*ebits; b++) {

+			    if ( *src & src_mask ) {

+			       *dst |= dst_mask;

+			    }

+			    else {

+			       *dst &= ~dst_mask;

+			    }

+

+			    if (dst_mask > 1) dst_mask >>= 1;

+			    else { 

+			       dst_mask = 0x80;

+			       dst++;

+			    }

+

+			    if (src_mask > 1) src_mask >>= 1;

+			    else {

+			       src_mask = 0x80;

+			       src++;

+			    }

+			 }

+		      }

+

+		   }

+

+		   Xfree( be_buf );

+		}

+		else {

+		   /* Throw data on the floor */

+		   _XEatData(dpy, be_buf_size);

+		   Xfree( buf );

+		   return BadAlloc;

+		}

+	     }

+

+	     UnlockDisplay(dpy);

+	     SyncHandle();

+

+	  } /* of npixels > 0 */ 

+

+       }  /* of for loop */

+

+    } /* of if buf_size > 0 */

+

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.length = buf_size >> 2;

+

+    if (client->swapped) {

+       __GLX_SWAP_SHORT(&reply.sequenceNumber);

+       __GLX_SWAP_INT(&reply.length);

+    }

+

+    WriteToClient(client, sizeof(xGLXReadPixelsReply),(char *)&reply);

+    if (buf_size > 0) {

+       WriteToClient(client, buf_size, (char *)buf);

+       Xfree( buf );

+    }

+

+    return Success;

+}

+

+int __glXDispSwap_GetTexImage(__GLXclientState *cl, GLbyte *pc)

+{

+    __GLX_DECLARE_SWAP_VARIABLES;

+    GLbyte *lpc = pc;

+

+    lpc += sz_xGLXSingleReq;

+    __GLX_SWAP_INT(lpc+0);

+    __GLX_SWAP_INT(lpc+4);

+    __GLX_SWAP_INT(lpc+8);

+    __GLX_SWAP_INT(lpc+12);

+

+    /* reverse swapBytes */

+    *(GLboolean *)(lpc + 16) = ! *(GLboolean *)(lpc + 16);

+

+    return( __glXForwardPipe0WithReplySwap( cl, pc ) );

+}

+

+int __glXDispSwap_GetColorTable(__GLXclientState *cl, GLbyte *pc)

+{

+    __GLX_DECLARE_SWAP_VARIABLES;

+    GLbyte *lpc = pc;

+

+    lpc += sz_xGLXSingleReq;

+    __GLX_SWAP_INT(lpc+0);

+    __GLX_SWAP_INT(lpc+4);

+    __GLX_SWAP_INT(lpc+8);

+

+    /* reverse swapBytes */

+    *(GLboolean *)(lpc + 12) = ! *(GLboolean *)(lpc + 12);

+

+    return( __glXForwardPipe0WithReplySwap( cl, pc ) );

+}

+

+