69b79c1a66
Under the terms of version 1.1, "once Covered Code has been published under a particular version of the License, Recipient may, for the duration of the License, continue to use it under the terms of that version, or choose to use such Covered Code under the terms of any subsequent version published by SGI." FreeB 2.0 license refers to "dates of first publication". They are here taken to be 1991-2000, as noted in the original license text: ** Original Code. The Original Code is: OpenGL Sample Implementation, ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. ** Copyright in any portions created by third parties is as indicated ** elsewhere herein. All Rights Reserved. Official FreeB 2.0 text: http://oss.sgi.com/projects/FreeB/SGIFreeSWLicB.2.0.pdf As always, this code has not been tested for conformance with the OpenGL specification. OpenGL conformance testing is available from http://khronos.org/ and is required for use of the OpenGL logo in product advertising and promotion.
378 lines
10 KiB
C
378 lines
10 KiB
C
/*
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* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
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* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice including the dates of first publication and
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* either this permission notice or a reference to
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* http://oss.sgi.com/projects/FreeB/
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* shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of Silicon Graphics, Inc.
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* shall not be used in advertising or otherwise to promote the sale, use or
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* other dealings in this Software without prior written authorization from
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* Silicon Graphics, Inc.
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*/
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#ifdef HAVE_DMX_CONFIG_H
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#include <dmx-config.h>
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#endif
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#include "dmx.h"
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#include "dmxlog.h"
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#undef Xmalloc
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#undef Xcalloc
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#undef Xrealloc
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#undef Xfree
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#include "glxserver.h"
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#include <windowstr.h>
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#include "glxfbconfig.h"
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#ifdef PANORAMIX
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#include "panoramiXsrv.h"
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#endif
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__GLXscreenInfo *__glXActiveScreens;
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GLint __glXNumActiveScreens;
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__GLXFBConfig **__glXFBConfigs;
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int __glXNumFBConfigs;
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static char GLXServerVendorName[] = "SGI DMX/glxProxy";
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static char GLXServerVersion[64];
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static char GLXServerExtensions[] =
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"GLX_EXT_visual_info "
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"GLX_EXT_visual_rating "
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"GLX_EXT_import_context "
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"GLX_SGIX_fbconfig "
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"GLX_SGI_make_current_read "
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"GLX_SGI_swap_control "
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;
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static char ExtensionsString[1024];
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static void CalcServerVersionAndExtensions( void )
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{
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int s;
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xGLXQueryVersionReq *req;
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xGLXQueryVersionReply reply;
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char **be_extensions;
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char *ext;
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char *denied_extensions;
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/*
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* set the server glx version to be the minimum version
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* supported by all back-end servers
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*/
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__glXVersionMajor = 0;
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__glXVersionMinor = 0;
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for (s=0; s<__glXNumActiveScreens; s++) {
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DMXScreenInfo *dmxScreen = &dmxScreens[s];
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Display *dpy = dmxScreen->beDisplay;
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/* Send the glXQueryVersion request */
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LockDisplay(dpy);
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GetReq(GLXQueryVersion,req);
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req->reqType = dmxScreen->glxMajorOpcode;
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req->glxCode = X_GLXQueryVersion;
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req->majorVersion = GLX_SERVER_MAJOR_VERSION;
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req->minorVersion = GLX_SERVER_MINOR_VERSION;
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_XReply(dpy, (xReply*) &reply, 0, False);
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UnlockDisplay(dpy);
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SyncHandle();
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if (s == 0) {
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__glXVersionMajor = reply.majorVersion;
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__glXVersionMinor = reply.minorVersion;
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}
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else {
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if (reply.majorVersion < __glXVersionMajor) {
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__glXVersionMajor = reply.majorVersion;
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__glXVersionMinor = reply.minorVersion;
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}
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else if ( (reply.majorVersion == __glXVersionMajor) &&
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(reply.minorVersion < __glXVersionMinor) ) {
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__glXVersionMinor = reply.minorVersion;
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}
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}
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}
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if (GLX_SERVER_MAJOR_VERSION < __glXVersionMajor) {
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__glXVersionMajor = GLX_SERVER_MAJOR_VERSION;
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__glXVersionMinor = GLX_SERVER_MINOR_VERSION;
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}
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else if ( (GLX_SERVER_MAJOR_VERSION == __glXVersionMajor) &&
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(GLX_SERVER_MINOR_VERSION < __glXVersionMinor) ) {
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__glXVersionMinor = GLX_SERVER_MINOR_VERSION;
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}
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sprintf(GLXServerVersion, "%d.%d DMX %d back-end server(s)",
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__glXVersionMajor, __glXVersionMinor, __glXNumActiveScreens );
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/*
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* set the ExtensionsString to the minimum extensions string
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*/
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ExtensionsString[0] = '\0';
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/*
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* read extensions strings of all back-end servers
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*/
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be_extensions = (char **)Xalloc( __glXNumActiveScreens * sizeof(char *) );
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if (!be_extensions)
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return;
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for (s=0; s<__glXNumActiveScreens; s++) {
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DMXScreenInfo *dmxScreen = &dmxScreens[s];
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Display *dpy = dmxScreen->beDisplay;
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xGLXQueryServerStringReq *req;
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xGLXQueryServerStringReply reply;
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int length, numbytes, slop;
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/* Send the glXQueryServerString request */
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LockDisplay(dpy);
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GetReq(GLXQueryServerString,req);
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req->reqType = dmxScreen->glxMajorOpcode;
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req->glxCode = X_GLXQueryServerString;
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req->screen = DefaultScreen(dpy);
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req->name = GLX_EXTENSIONS;
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_XReply(dpy, (xReply*) &reply, 0, False);
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length = (int)reply.length;
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numbytes = (int)reply.n;
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slop = numbytes * __GLX_SIZE_INT8 & 3;
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be_extensions[s] = (char *)Xalloc(numbytes);
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if (!be_extensions[s]) {
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/* Throw data on the floor */
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_XEatData(dpy, length);
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} else {
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_XRead(dpy, (char *)be_extensions[s], numbytes);
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if (slop) _XEatData(dpy,4-slop);
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}
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UnlockDisplay(dpy);
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SyncHandle();
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}
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/*
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* extensions string will include only extensions that our
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* server supports as well as all back-end servers supports.
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* extensions that are in the DMX_DENY_EXTENSIONS string will
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* not be supported.
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*/
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denied_extensions = getenv("DMX_DENY_GLX_EXTENSIONS");
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ext = strtok(GLXServerExtensions, " ");
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while( ext ) {
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int supported = 1;
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if (denied_extensions && strstr(denied_extensions, ext)) {
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supported = 0;
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}
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else {
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for (s=0; s<__glXNumActiveScreens && supported; s++) {
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if ( !strstr(be_extensions[s], ext) ) {
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supported = 0;
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}
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}
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}
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if (supported) {
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strcat(ExtensionsString, ext);
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strcat(ExtensionsString, " ");
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}
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ext = strtok(NULL, " ");
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}
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/*
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* release temporary storage
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*/
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for (s=0; s<__glXNumActiveScreens; s++) {
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if (be_extensions[s]) Xfree(be_extensions[s]);
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}
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Xfree( be_extensions );
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if (dmxGLXSwapGroupSupport) {
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if (!denied_extensions ||
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!strstr(denied_extensions, "GLX_SGIX_swap_group")) {
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strcat(ExtensionsString, "GLX_SGIX_swap_group");
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if (!denied_extensions ||
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!strstr(denied_extensions, "GLX_SGIX_swap_barrier")) {
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strcat(ExtensionsString, " GLX_SGIX_swap_barrier");
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}
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}
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}
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}
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void __glXScreenInit(GLint numscreens)
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{
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int s;
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int c;
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DMXScreenInfo *dmxScreen0 = &dmxScreens[0];
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__glXNumActiveScreens = numscreens;
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CalcServerVersionAndExtensions();
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__glXFBConfigs = NULL;
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__glXNumFBConfigs = 0;
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if ( (__glXVersionMajor == 1 && __glXVersionMinor >= 3) ||
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(__glXVersionMajor > 1) ||
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( strstr(ExtensionsString, "GLX_SGIX_fbconfig") ) ) {
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/*
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// Initialize FBConfig info.
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// find the set of FBConfigs that are present on all back-end
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// servers - only those configs will be supported
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*/
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__glXFBConfigs = (__GLXFBConfig **)Xalloc( dmxScreen0->numFBConfigs *
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(numscreens+1) * sizeof(__GLXFBConfig *) );
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__glXNumFBConfigs = 0;
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for (c=0; c<dmxScreen0->numFBConfigs; c++) {
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__GLXFBConfig *cfg = NULL;
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if (numscreens > 1) {
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for (s=1; s<numscreens; s++) {
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DMXScreenInfo *dmxScreen = &dmxScreens[s];
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__GLXscreenInfo *glxScreen = &__glXActiveScreens[s];
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cfg = FindMatchingFBConfig( &dmxScreen0->fbconfigs[c],
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dmxScreen->fbconfigs,
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dmxScreen->numFBConfigs );
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__glXFBConfigs[ __glXNumFBConfigs * (numscreens+1) + s + 1 ] = cfg;
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if (!cfg) {
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dmxLog(dmxInfo,"screen0 FBConfig 0x%x is missing on screen#%d\n", dmxScreen0->fbconfigs[c].id, s);
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break;
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}
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else {
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dmxLog(dmxInfo,"screen0 FBConfig 0x%x matched to 0x%x on screen#%d\n", dmxScreen0->fbconfigs[c].id, cfg->id, s);
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}
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}
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}
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else {
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cfg = &dmxScreen0->fbconfigs[c];
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}
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if (cfg) {
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/* filter out overlay visuals */
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if (cfg->level == 0) {
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__GLXFBConfig *proxy_cfg;
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__glXFBConfigs[ __glXNumFBConfigs * (numscreens+1) + 1 ] =
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&dmxScreen0->fbconfigs[c];
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proxy_cfg = Xalloc( sizeof(__GLXFBConfig) );
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memcpy( proxy_cfg, cfg, sizeof(__GLXFBConfig) );
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proxy_cfg->id = FakeClientID(0);
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/* visual will be associated later in __glXGetFBConfigs */
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proxy_cfg->associatedVisualId = (unsigned int)-1;
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__glXFBConfigs[ __glXNumFBConfigs * (numscreens+1) + 0 ] = proxy_cfg;
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__glXNumFBConfigs++;
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}
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}
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}
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}
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}
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void __glXScreenReset(void)
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{
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__glXNumActiveScreens = 0;
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}
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char *__glXGetServerString( unsigned int name )
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{
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char *ret = NULL;
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switch( name) {
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case GLX_VENDOR:
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ret = GLXServerVendorName;
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break;
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case GLX_VERSION:
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ret = GLXServerVersion;
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break;
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case GLX_EXTENSIONS:
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ret = ExtensionsString;
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break;
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default:
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break;
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}
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return( ret );
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}
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__GLXFBConfig *glxLookupFBConfig( GLXFBConfigID id )
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{
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int i,j;
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for (i=0, j=0; i<__glXNumFBConfigs; i++,j+=(__glXNumActiveScreens+1) ) {
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if ( __glXFBConfigs[j]->id == id)
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return( __glXFBConfigs[j] );
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}
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return(NULL);
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}
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__GLXFBConfig *glxLookupFBConfigByVID( VisualID vid )
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{
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int i,j;
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for (i=0, j=0; i<__glXNumFBConfigs; i++,j+=(__glXNumActiveScreens+1) ) {
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if ( __glXFBConfigs[j]->associatedVisualId == vid)
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return( __glXFBConfigs[j] );
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}
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return(NULL);
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}
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__GLXFBConfig *glxLookupBackEndFBConfig( GLXFBConfigID id, int screen )
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{
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int i;
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int j;
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for (i=0, j=0; i<__glXNumFBConfigs; i++,j+=(__glXNumActiveScreens+1) ) {
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if ( __glXFBConfigs[j]->id == id)
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return( __glXFBConfigs[j+screen+1] );
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}
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return(NULL);
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}
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int glxIsExtensionSupported( char *ext )
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{
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return( strstr(ExtensionsString, ext) != NULL );
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}
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