334 lines
9.2 KiB
C
334 lines
9.2 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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#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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snprintf(GLXServerVersion, sizeof(GLXServerVersion),
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"%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 **)malloc( __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 *)malloc(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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free(be_extensions[s]);
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}
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free( 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 **)malloc( 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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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 = malloc( 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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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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