xserver git update 15/5/2010

1 files changed, 391 insertions, 391 deletions

diff --git a/xorg-server/glx/single2.c b/xorg-server/glx/single2.c
index 50a59ed71..754cc0b86 100644
--- a/xorg-server/glx/single2.c
+++ b/xorg-server/glx/single2.c
@@ -1,391 +1,391 @@
-/*
- * 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_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "glxserver.h"
-#include "glxutil.h"
-#include "glxext.h"
-#include "indirect_dispatch.h"
-#include "unpack.h"
-#include "glapitable.h"
-#include "glapi.h"
-#include "glthread.h"
-#include "dispatch.h"
-
-int __glXDisp_FeedbackBuffer(__GLXclientState *cl, GLbyte *pc)
-{
-    GLsizei size;
-    GLenum type;
-    __GLXcontext *cx;
-    int error;
-
-    cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
-    if (!cx) {
-	return error;
-    }
-
-    pc += __GLX_SINGLE_HDR_SIZE;
-    size = *(GLsizei *)(pc+0);
-    type = *(GLenum *)(pc+4);
-    if (cx->feedbackBufSize < size) {
-	cx->feedbackBuf = (GLfloat *) xrealloc(cx->feedbackBuf,
-						   (size_t)size 
-						   * __GLX_SIZE_FLOAT32);
-	if (!cx->feedbackBuf) {
-	    cl->client->errorValue = size;
-	    return BadAlloc;
-	}
-	cx->feedbackBufSize = size;
-    }
-    CALL_FeedbackBuffer( GET_DISPATCH(), (size, type, cx->feedbackBuf) );
-    __GLX_NOTE_UNFLUSHED_CMDS(cx);
-    return Success;
-}
-
-int __glXDisp_SelectBuffer(__GLXclientState *cl, GLbyte *pc)
-{
-    __GLXcontext *cx;
-    GLsizei size;
-    int error;
-
-    cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
-    if (!cx) {
-	return error;
-    }
-
-    pc += __GLX_SINGLE_HDR_SIZE;
-    size = *(GLsizei *)(pc+0);
-    if (cx->selectBufSize < size) {
-	cx->selectBuf = (GLuint *) xrealloc(cx->selectBuf,
-						(size_t) size 
-						* __GLX_SIZE_CARD32);
-	if (!cx->selectBuf) {
-	    cl->client->errorValue = size;
-	    return BadAlloc;
-	}
-	cx->selectBufSize = size;
-    }
-    CALL_SelectBuffer( GET_DISPATCH(), (size, cx->selectBuf) );
-    __GLX_NOTE_UNFLUSHED_CMDS(cx);
-    return Success;
-}
-
-int __glXDisp_RenderMode(__GLXclientState *cl, GLbyte *pc)
-{
-    ClientPtr client;
-    xGLXRenderModeReply reply;
-    __GLXcontext *cx;
-    GLint nitems=0, retBytes=0, retval, newModeCheck;
-    GLubyte *retBuffer = NULL;
-    GLenum newMode;
-    int error;
-
-    cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
-    if (!cx) {
-	return error;
-    }
-
-    pc += __GLX_SINGLE_HDR_SIZE;
-    newMode = *(GLenum*) pc;
-    retval = CALL_RenderMode( GET_DISPATCH(), (newMode) );
-
-    /* Check that render mode worked */
-    CALL_GetIntegerv( GET_DISPATCH(), (GL_RENDER_MODE, &newModeCheck) );
-    if (newModeCheck != newMode) {
-	/* Render mode change failed.  Bail */
-	newMode = newModeCheck;
-	goto noChangeAllowed;
-    }
-
-    /*
-    ** Render mode might have still failed if we get here.  But in this
-    ** case we can't really tell, nor does it matter.  If it did fail, it
-    ** will return 0, and thus we won't send any data across the wire.
-    */
-
-    switch (cx->renderMode) {
-      case GL_RENDER:
-	cx->renderMode = newMode;
-	break;
-      case GL_FEEDBACK:
-	if (retval < 0) {
-	    /* Overflow happened. Copy the entire buffer */
-	    nitems = cx->feedbackBufSize;
-	} else {
-	    nitems = retval;
-	}
-	retBytes = nitems * __GLX_SIZE_FLOAT32;
-	retBuffer = (GLubyte*) cx->feedbackBuf;
-	cx->renderMode = newMode;
-	break;
-      case GL_SELECT:
-	if (retval < 0) {
-	    /* Overflow happened.  Copy the entire buffer */
-	    nitems = cx->selectBufSize;
-	} else {
-	    GLuint *bp = cx->selectBuf;
-	    GLint i;
-
-	    /*
-	    ** Figure out how many bytes of data need to be sent.  Parse
-	    ** the selection buffer to determine this fact as the
-	    ** return value is the number of hits, not the number of
-	    ** items in the buffer.
-	    */
-	    nitems = 0;
-	    i = retval;
-	    while (--i >= 0) {
-		GLuint n;
-
-		/* Parse select data for this hit */
-		n = *bp;
-		bp += 3 + n;
-	    }
-	    nitems = bp - cx->selectBuf;
-	}
-	retBytes = nitems * __GLX_SIZE_CARD32;
-	retBuffer = (GLubyte*) cx->selectBuf;
-	cx->renderMode = newMode;
-	break;
-    }
-
-    /*
-    ** First reply is the number of elements returned in the feedback or
-    ** selection array, as per the API for glRenderMode itself.
-    */
-  noChangeAllowed:;
-    client = cl->client;
-    reply.length = nitems;
-    reply.type = X_Reply;
-    reply.sequenceNumber = client->sequence;
-    reply.retval = retval;
-    reply.size = nitems;
-    reply.newMode = newMode;
-    WriteToClient(client, sz_xGLXRenderModeReply, (char *)&reply);
-    if (retBytes) {
-	WriteToClient(client, retBytes, (char *)retBuffer);
-    }
-    return Success;
-}
-
-int __glXDisp_Flush(__GLXclientState *cl, GLbyte *pc)
-{
-	__GLXcontext *cx;
-	int error;
-
-	cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
-	if (!cx) {
-		return error;
-	}
-
-	CALL_Flush( GET_DISPATCH(), () );
-	__GLX_NOTE_FLUSHED_CMDS(cx);
-	return Success;
-}
-
-int __glXDisp_Finish(__GLXclientState *cl, GLbyte *pc)
-{
-    __GLXcontext *cx;
-    ClientPtr client;
-    int error;
-
-    cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
-    if (!cx) {
-	return error;
-    }
-
-    /* Do a local glFinish */
-    CALL_Finish( GET_DISPATCH(), () );
-    __GLX_NOTE_FLUSHED_CMDS(cx);
-
-    /* Send empty reply packet to indicate finish is finished */
-    client = cl->client;
-    __GLX_BEGIN_REPLY(0);
-    __GLX_SEND_HEADER();
-    return Success;
-}
-
-#define SEPARATOR " "
-
-char *__glXcombine_strings(const char *cext_string, const char *sext_string)
-{
-   size_t clen, slen;
-   char *combo_string, *token, *s1;
-   const char *s2, *end;
-
-   /* safeguard to prevent potentially fatal errors in the string functions */
-   if (!cext_string)
-      cext_string = "";
-   if (!sext_string)
-      sext_string = "";
-
-   /*
-   ** String can't be longer than min(cstring, sstring)
-   ** pull tokens out of shortest string
-   ** include space in combo_string for final separator and null terminator
-   */
-   clen = strlen(cext_string);
-   slen = strlen(sext_string);
-   if (clen > slen) {
-	combo_string = (char *) xalloc(slen + 2);
-	s1 = (char *) xalloc(slen + 2);
-	if (s1) strcpy(s1, sext_string);
-	s2 = cext_string;
-   } else {
-	combo_string = (char *) xalloc(clen + 2);
-	s1 = (char *) xalloc(clen + 2);
-	if (s1) strcpy(s1, cext_string);
-	s2 = sext_string;
-   }
-   if (!combo_string || !s1) {
-	if (combo_string)
-	    xfree(combo_string);
-	if (s1)
-	    xfree(s1);
-	return NULL;
-   }
-   combo_string[0] = '\0';
-
-   /* Get first extension token */
-   token = strtok( s1, SEPARATOR);
-   while ( token != NULL ) {
-
-	/*
-	** if token in second string then save it
-	** beware of extension names which are prefixes of other extension names
-	*/
-	const char *p = s2;
-	end = p + strlen(p);
-	while (p < end) {
-	    size_t n = strcspn(p, SEPARATOR);
-	    if ((strlen(token) == n) && (strncmp(token, p, n) == 0)) {
-		combo_string = strcat(combo_string, token);
-		combo_string = strcat(combo_string, SEPARATOR);
-	    }
-	    p += (n + 1);
-	}
-
-	/* Get next extension token */
-	token = strtok( NULL, SEPARATOR);
-   }
-   xfree(s1);
-   return combo_string;
-}
-
-int DoGetString(__GLXclientState *cl, GLbyte *pc, GLboolean need_swap)
-{
-    ClientPtr client;
-    __GLXcontext *cx;
-    GLenum name;
-    const char *string;
-    __GLX_DECLARE_SWAP_VARIABLES;
-    int error;
-    char *buf = NULL, *buf1 = NULL;
-    GLint length = 0;
-
-    /* If the client has the opposite byte order, swap the contextTag and
-     * the name.
-     */
-    if ( need_swap ) {
-	__GLX_SWAP_INT(pc + 4);
-	__GLX_SWAP_INT(pc + __GLX_SINGLE_HDR_SIZE);
-    }
-
-    cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);
-    if (!cx) {
-	return error;
-    }
-
-    pc += __GLX_SINGLE_HDR_SIZE;
-    name = *(GLenum *)(pc + 0);
-    string = (const char *) CALL_GetString( GET_DISPATCH(), (name) );
-    client = cl->client;
-
-    if (string == NULL)
-      string = "";
-
-    /*
-    ** Restrict extensions to those that are supported by both the
-    ** implementation and the connection.  That is, return the
-    ** intersection of client, server, and core extension strings.
-    */
-    if (name == GL_EXTENSIONS) {
-	buf1 = __glXcombine_strings(string,
-				      cl->GLClientextensions);
-	buf = __glXcombine_strings(buf1,
-				      cx->pGlxScreen->GLextensions);
-	if (buf1 != NULL) {
-	    xfree(buf1);
-	}
-	string = buf;
-    }
-    else if ( name == GL_VERSION ) {
-	if ( atof( string ) > atof( GLServerVersion ) ) {
-	    buf = xalloc( strlen( string ) + strlen( GLServerVersion ) + 4 );
-	    if ( buf == NULL ) {
-		string = GLServerVersion;
-	    }
-	    else {
-		sprintf( buf, "%s (%s)", GLServerVersion, string );
-		string = buf;
-	    }
-	}
-    }
-    if (string) {
-	length = strlen((const char *) string) + 1;
-    }
-
-    __GLX_BEGIN_REPLY(length);
-    __GLX_PUT_SIZE(length);
-
-    if ( need_swap ) {
-	__GLX_SWAP_REPLY_SIZE();
-	__GLX_SWAP_REPLY_HEADER();
-    }
-
-    __GLX_SEND_HEADER();
-    WriteToClient(client, length, (char *) string); 
-    if (buf != NULL)
-	xfree(buf);
-
-    return Success;
-}
-
-int __glXDisp_GetString(__GLXclientState *cl, GLbyte *pc)
-{
-    return DoGetString(cl, pc, GL_FALSE);
-}
+/*

+ * 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_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include <string.h>

+#include <stdio.h>

+#include <stdlib.h>

+

+#include "glxserver.h"

+#include "glxutil.h"

+#include "glxext.h"

+#include "indirect_dispatch.h"

+#include "unpack.h"

+#include "glapitable.h"

+#include "glapi.h"

+#include "glthread.h"

+#include "dispatch.h"

+

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

+{

+    GLsizei size;

+    GLenum type;

+    __GLXcontext *cx;

+    int error;

+

+    cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);

+    if (!cx) {

+	return error;

+    }

+

+    pc += __GLX_SINGLE_HDR_SIZE;

+    size = *(GLsizei *)(pc+0);

+    type = *(GLenum *)(pc+4);

+    if (cx->feedbackBufSize < size) {

+	cx->feedbackBuf = (GLfloat *) realloc(cx->feedbackBuf,

+						   (size_t)size 

+						   * __GLX_SIZE_FLOAT32);

+	if (!cx->feedbackBuf) {

+	    cl->client->errorValue = size;

+	    return BadAlloc;

+	}

+	cx->feedbackBufSize = size;

+    }

+    CALL_FeedbackBuffer( GET_DISPATCH(), (size, type, cx->feedbackBuf) );

+    __GLX_NOTE_UNFLUSHED_CMDS(cx);

+    return Success;

+}

+

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

+{

+    __GLXcontext *cx;

+    GLsizei size;

+    int error;

+

+    cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);

+    if (!cx) {

+	return error;

+    }

+

+    pc += __GLX_SINGLE_HDR_SIZE;

+    size = *(GLsizei *)(pc+0);

+    if (cx->selectBufSize < size) {

+	cx->selectBuf = (GLuint *) realloc(cx->selectBuf,

+						(size_t) size 

+						* __GLX_SIZE_CARD32);

+	if (!cx->selectBuf) {

+	    cl->client->errorValue = size;

+	    return BadAlloc;

+	}

+	cx->selectBufSize = size;

+    }

+    CALL_SelectBuffer( GET_DISPATCH(), (size, cx->selectBuf) );

+    __GLX_NOTE_UNFLUSHED_CMDS(cx);

+    return Success;

+}

+

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

+{

+    ClientPtr client;

+    xGLXRenderModeReply reply;

+    __GLXcontext *cx;

+    GLint nitems=0, retBytes=0, retval, newModeCheck;

+    GLubyte *retBuffer = NULL;

+    GLenum newMode;

+    int error;

+

+    cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);

+    if (!cx) {

+	return error;

+    }

+

+    pc += __GLX_SINGLE_HDR_SIZE;

+    newMode = *(GLenum*) pc;

+    retval = CALL_RenderMode( GET_DISPATCH(), (newMode) );

+

+    /* Check that render mode worked */

+    CALL_GetIntegerv( GET_DISPATCH(), (GL_RENDER_MODE, &newModeCheck) );

+    if (newModeCheck != newMode) {

+	/* Render mode change failed.  Bail */

+	newMode = newModeCheck;

+	goto noChangeAllowed;

+    }

+

+    /*

+    ** Render mode might have still failed if we get here.  But in this

+    ** case we can't really tell, nor does it matter.  If it did fail, it

+    ** will return 0, and thus we won't send any data across the wire.

+    */

+

+    switch (cx->renderMode) {

+      case GL_RENDER:

+	cx->renderMode = newMode;

+	break;

+      case GL_FEEDBACK:

+	if (retval < 0) {

+	    /* Overflow happened. Copy the entire buffer */

+	    nitems = cx->feedbackBufSize;

+	} else {

+	    nitems = retval;

+	}

+	retBytes = nitems * __GLX_SIZE_FLOAT32;

+	retBuffer = (GLubyte*) cx->feedbackBuf;

+	cx->renderMode = newMode;

+	break;

+      case GL_SELECT:

+	if (retval < 0) {

+	    /* Overflow happened.  Copy the entire buffer */

+	    nitems = cx->selectBufSize;

+	} else {

+	    GLuint *bp = cx->selectBuf;

+	    GLint i;

+

+	    /*

+	    ** Figure out how many bytes of data need to be sent.  Parse

+	    ** the selection buffer to determine this fact as the

+	    ** return value is the number of hits, not the number of

+	    ** items in the buffer.

+	    */

+	    nitems = 0;

+	    i = retval;

+	    while (--i >= 0) {

+		GLuint n;

+

+		/* Parse select data for this hit */

+		n = *bp;

+		bp += 3 + n;

+	    }

+	    nitems = bp - cx->selectBuf;

+	}

+	retBytes = nitems * __GLX_SIZE_CARD32;

+	retBuffer = (GLubyte*) cx->selectBuf;

+	cx->renderMode = newMode;

+	break;

+    }

+

+    /*

+    ** First reply is the number of elements returned in the feedback or

+    ** selection array, as per the API for glRenderMode itself.

+    */

+  noChangeAllowed:;

+    client = cl->client;

+    reply.length = nitems;

+    reply.type = X_Reply;

+    reply.sequenceNumber = client->sequence;

+    reply.retval = retval;

+    reply.size = nitems;

+    reply.newMode = newMode;

+    WriteToClient(client, sz_xGLXRenderModeReply, (char *)&reply);

+    if (retBytes) {

+	WriteToClient(client, retBytes, (char *)retBuffer);

+    }

+    return Success;

+}

+

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

+{

+	__GLXcontext *cx;

+	int error;

+

+	cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);

+	if (!cx) {

+		return error;

+	}

+

+	CALL_Flush( GET_DISPATCH(), () );

+	__GLX_NOTE_FLUSHED_CMDS(cx);

+	return Success;

+}

+

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

+{

+    __GLXcontext *cx;

+    ClientPtr client;

+    int error;

+

+    cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);

+    if (!cx) {

+	return error;

+    }

+

+    /* Do a local glFinish */

+    CALL_Finish( GET_DISPATCH(), () );

+    __GLX_NOTE_FLUSHED_CMDS(cx);

+

+    /* Send empty reply packet to indicate finish is finished */

+    client = cl->client;

+    __GLX_BEGIN_REPLY(0);

+    __GLX_SEND_HEADER();

+    return Success;

+}

+

+#define SEPARATOR " "

+

+char *__glXcombine_strings(const char *cext_string, const char *sext_string)

+{

+   size_t clen, slen;

+   char *combo_string, *token, *s1;

+   const char *s2, *end;

+

+   /* safeguard to prevent potentially fatal errors in the string functions */

+   if (!cext_string)

+      cext_string = "";

+   if (!sext_string)

+      sext_string = "";

+

+   /*

+   ** String can't be longer than min(cstring, sstring)

+   ** pull tokens out of shortest string

+   ** include space in combo_string for final separator and null terminator

+   */

+   clen = strlen(cext_string);

+   slen = strlen(sext_string);

+   if (clen > slen) {

+	combo_string = (char *) malloc(slen + 2);

+	s1 = (char *) malloc(slen + 2);

+	if (s1) strcpy(s1, sext_string);

+	s2 = cext_string;

+   } else {

+	combo_string = (char *) malloc(clen + 2);

+	s1 = (char *) malloc(clen + 2);

+	if (s1) strcpy(s1, cext_string);

+	s2 = sext_string;

+   }

+   if (!combo_string || !s1) {

+	if (combo_string)

+	    free(combo_string);

+	if (s1)

+	    free(s1);

+	return NULL;

+   }

+   combo_string[0] = '\0';

+

+   /* Get first extension token */

+   token = strtok( s1, SEPARATOR);

+   while ( token != NULL ) {

+

+	/*

+	** if token in second string then save it

+	** beware of extension names which are prefixes of other extension names

+	*/

+	const char *p = s2;

+	end = p + strlen(p);

+	while (p < end) {

+	    size_t n = strcspn(p, SEPARATOR);

+	    if ((strlen(token) == n) && (strncmp(token, p, n) == 0)) {

+		combo_string = strcat(combo_string, token);

+		combo_string = strcat(combo_string, SEPARATOR);

+	    }

+	    p += (n + 1);

+	}

+

+	/* Get next extension token */

+	token = strtok( NULL, SEPARATOR);

+   }

+   free(s1);

+   return combo_string;

+}

+

+int DoGetString(__GLXclientState *cl, GLbyte *pc, GLboolean need_swap)

+{

+    ClientPtr client;

+    __GLXcontext *cx;

+    GLenum name;

+    const char *string;

+    __GLX_DECLARE_SWAP_VARIABLES;

+    int error;

+    char *buf = NULL, *buf1 = NULL;

+    GLint length = 0;

+

+    /* If the client has the opposite byte order, swap the contextTag and

+     * the name.

+     */

+    if ( need_swap ) {

+	__GLX_SWAP_INT(pc + 4);

+	__GLX_SWAP_INT(pc + __GLX_SINGLE_HDR_SIZE);

+    }

+

+    cx = __glXForceCurrent(cl, __GLX_GET_SINGLE_CONTEXT_TAG(pc), &error);

+    if (!cx) {

+	return error;

+    }

+

+    pc += __GLX_SINGLE_HDR_SIZE;

+    name = *(GLenum *)(pc + 0);

+    string = (const char *) CALL_GetString( GET_DISPATCH(), (name) );

+    client = cl->client;

+

+    if (string == NULL)

+      string = "";

+

+    /*

+    ** Restrict extensions to those that are supported by both the

+    ** implementation and the connection.  That is, return the

+    ** intersection of client, server, and core extension strings.

+    */

+    if (name == GL_EXTENSIONS) {

+	buf1 = __glXcombine_strings(string,

+				      cl->GLClientextensions);

+	buf = __glXcombine_strings(buf1,

+				      cx->pGlxScreen->GLextensions);

+	if (buf1 != NULL) {

+	    free(buf1);

+	}

+	string = buf;

+    }

+    else if ( name == GL_VERSION ) {

+	if ( atof( string ) > atof( GLServerVersion ) ) {

+	    buf = malloc( strlen( string ) + strlen( GLServerVersion ) + 4 );

+	    if ( buf == NULL ) {

+		string = GLServerVersion;

+	    }

+	    else {

+		sprintf( buf, "%s (%s)", GLServerVersion, string );

+		string = buf;

+	    }

+	}

+    }

+    if (string) {

+	length = strlen((const char *) string) + 1;

+    }

+

+    __GLX_BEGIN_REPLY(length);

+    __GLX_PUT_SIZE(length);

+

+    if ( need_swap ) {

+	__GLX_SWAP_REPLY_SIZE();

+	__GLX_SWAP_REPLY_HEADER();

+    }

+

+    __GLX_SEND_HEADER();

+    WriteToClient(client, length, (char *) string); 

+    if (buf != NULL)

+	free(buf);

+

+    return Success;

+}

+

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

+{

+    return DoGetString(cl, pc, GL_FALSE);

+}