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authormarha <marha@users.sourceforge.net>2010-05-16 20:50:58 +0000
committermarha <marha@users.sourceforge.net>2010-05-16 20:50:58 +0000
commit1c94119ae26b94a60bb2c2b33494ed43c3b8a52f (patch)
treecfe0c736c95314edac7d9f1065be9c13026ed0c1 /xorg-server/glx/single2.c
parent6b29aa4559aeb6f795caee047561654bfa0a1954 (diff)
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svn merge -r588:HEAD ^/branches/released .
Diffstat (limited to 'xorg-server/glx/single2.c')
-rw-r--r--xorg-server/glx/single2.c790
1 files changed, 395 insertions, 395 deletions
diff --git a/xorg-server/glx/single2.c b/xorg-server/glx/single2.c
index f6e474c46..4d8aeaa83 100644
--- a/xorg-server/glx/single2.c
+++ b/xorg-server/glx/single2.c
@@ -1,395 +1,395 @@
-/*
- * 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>
-#else
-
-#include "glheader.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>
+#else
+
+#include "glheader.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);
+}