Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 390 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/hw/dmx/glxProxy/glxscreens.c b/nx-X11/programs/Xserver/hw/dmx/glxProxy/glxscreens.c
new file mode 100644
index 000000000..a7d4ce13d
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/dmx/glxProxy/glxscreens.c
@@ -0,0 +1,390 @@
+/* $XFree86: xc/programs/Xserver/GL/glx/glxscreens.c,v 1.6 2001/03/21 16:29:36 dawes Exp $ */
+/*
+** License Applicability. Except to the extent portions of this file are
+** made subject to an alternative license as permitted in the SGI Free
+** Software License B, Version 1.1 (the "License"), the contents of this
+** file are subject only to the provisions of the License. You may not use
+** this file except in compliance with the License. You may obtain a copy
+** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+** 
+** http://oss.sgi.com/projects/FreeB
+** 
+** Note that, as provided in the License, the Software is distributed on an
+** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+** 
+** 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.
+** 
+** Additional Notice Provisions: The application programming interfaces
+** established by SGI in conjunction with the Original Code are The
+** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+** Window System(R) (Version 1.3), released October 19, 1998. This software
+** was created using the OpenGL(R) version 1.2.1 Sample Implementation
+** published by SGI, but has not been independently verified as being
+** compliant with the OpenGL(R) version 1.2.1 Specification.
+**
+*/
+
+#ifdef HAVE_DMX_CONFIG_H
+#include <dmx-config.h>
+#endif
+
+#include "dmx.h"
+#include "dmxlog.h"
+
+#undef Xmalloc
+#undef Xcalloc
+#undef Xrealloc
+#undef Xfree
+
+#include "glxserver.h"
+
+#ifdef IN_MODULE
+#include <xf86_ansic.h>
+#else
+#include <string.h>
+#include <signal.h>
+#endif
+
+#include <windowstr.h>
+
+#include "glxfbconfig.h"
+
+#ifdef PANORAMIX
+#include "panoramiXsrv.h"
+#endif
+
+__GLXscreenInfo *__glXActiveScreens;
+GLint __glXNumActiveScreens;
+
+__GLXFBConfig **__glXFBConfigs;
+int            __glXNumFBConfigs;
+
+static char GLXServerVendorName[] = "SGI DMX/glxProxy";
+static char GLXServerVersion[64];
+static char GLXServerExtensions[] =
+            "GLX_EXT_visual_info "
+            "GLX_EXT_visual_rating "
+            "GLX_EXT_import_context "
+	    "GLX_SGIX_fbconfig "
+	    "GLX_SGI_make_current_read "
+	    "GLX_SGI_swap_control "
+            ;
+
+static char ExtensionsString[1024];
+
+static void CalcServerVersionAndExtensions( void )
+{
+   int s;
+   xGLXQueryVersionReq *req;
+   xGLXQueryVersionReply reply;
+   char **be_extensions;
+   char *ext;
+   char *denied_extensions;
+
+   /*
+    * set the server glx version to be the minimum version
+    * supported by all back-end servers
+    */
+   __glXVersionMajor = 0;
+   __glXVersionMinor = 0;
+   for (s=0; s<__glXNumActiveScreens; s++) {
+      DMXScreenInfo *dmxScreen = &dmxScreens[s];
+      Display *dpy = dmxScreen->beDisplay;
+
+      /* Send the glXQueryVersion request */
+      LockDisplay(dpy);
+      GetReq(GLXQueryVersion,req);
+      req->reqType = dmxScreen->glxMajorOpcode;
+      req->glxCode = X_GLXQueryVersion;
+      req->majorVersion = GLX_SERVER_MAJOR_VERSION;
+      req->minorVersion = GLX_SERVER_MINOR_VERSION;
+      _XReply(dpy, (xReply*) &reply, 0, False);
+      UnlockDisplay(dpy);
+      SyncHandle();
+
+      if (s == 0) {
+	 __glXVersionMajor = reply.majorVersion;
+	 __glXVersionMinor = reply.minorVersion;
+      }
+      else {
+	 if (reply.majorVersion < __glXVersionMajor) {
+	    __glXVersionMajor = reply.majorVersion;
+	    __glXVersionMinor = reply.minorVersion;
+	 }
+	 else if ( (reply.majorVersion == __glXVersionMajor) &&
+	           (reply.minorVersion < __glXVersionMinor)  ) {
+	    __glXVersionMinor = reply.minorVersion;
+	 }
+      }
+
+   }
+
+   if (GLX_SERVER_MAJOR_VERSION < __glXVersionMajor) {
+      __glXVersionMajor = GLX_SERVER_MAJOR_VERSION;
+      __glXVersionMinor = GLX_SERVER_MINOR_VERSION;
+   }
+   else if ( (GLX_SERVER_MAJOR_VERSION == __glXVersionMajor) &&
+	     (GLX_SERVER_MINOR_VERSION < __glXVersionMinor)  ) {
+      __glXVersionMinor = GLX_SERVER_MINOR_VERSION;
+   }
+
+   sprintf(GLXServerVersion, "%d.%d DMX %d back-end server(s)",
+              __glXVersionMajor, __glXVersionMinor, __glXNumActiveScreens );	 
+   /*
+    * set the ExtensionsString to the minimum extensions string
+    */
+   ExtensionsString[0] = '\0';
+
+   /*
+    * read extensions strings of all back-end servers
+    */
+   be_extensions = (char **)Xalloc( __glXNumActiveScreens * sizeof(char *) );
+   if (!be_extensions)
+      return;
+
+   for (s=0; s<__glXNumActiveScreens; s++) {
+      DMXScreenInfo *dmxScreen = &dmxScreens[s];
+      Display *dpy = dmxScreen->beDisplay;
+      xGLXQueryServerStringReq *req;
+      xGLXQueryServerStringReply reply;
+      int length, numbytes, slop;
+
+      /* Send the glXQueryServerString request */
+      LockDisplay(dpy);
+      GetReq(GLXQueryServerString,req);
+      req->reqType = dmxScreen->glxMajorOpcode;
+      req->glxCode = X_GLXQueryServerString;
+      req->screen = DefaultScreen(dpy);
+      req->name = GLX_EXTENSIONS;
+      _XReply(dpy, (xReply*) &reply, 0, False);
+
+      length = (int)reply.length;
+      numbytes = (int)reply.n;
+      slop = numbytes * __GLX_SIZE_INT8 & 3;
+      be_extensions[s] = (char *)Xalloc(numbytes);
+      if (!be_extensions[s]) {
+	 /* Throw data on the floor */
+	 _XEatData(dpy, length);
+      } else {
+	 _XRead(dpy, (char *)be_extensions[s], numbytes);
+	 if (slop) _XEatData(dpy,4-slop);
+      }
+      UnlockDisplay(dpy);
+      SyncHandle();
+   }
+
+   /*
+    * extensions string will include only extensions that our
+    * server supports as well as all back-end servers supports.
+    * extensions that are in the DMX_DENY_EXTENSIONS string will
+    * not be supported.
+    */
+   denied_extensions = getenv("DMX_DENY_GLX_EXTENSIONS");
+   ext = strtok(GLXServerExtensions, " ");
+   while( ext ) {
+      int supported = 1;
+
+      if (denied_extensions && strstr(denied_extensions, ext)) {
+	 supported = 0;
+      }
+      else {
+	 for (s=0; s<__glXNumActiveScreens && supported; s++) {
+	    if ( !strstr(be_extensions[s], ext) ) {
+	       supported = 0;
+	    }
+	 }
+      }
+
+      if (supported) {
+	 strcat(ExtensionsString, ext);
+	 strcat(ExtensionsString, " ");
+      }
+
+      ext = strtok(NULL, " ");
+   }
+
+   /*
+    * release temporary storage
+    */
+   for (s=0; s<__glXNumActiveScreens; s++) {
+      if (be_extensions[s]) Xfree(be_extensions[s]); 
+   }
+   Xfree( be_extensions );
+
+   if (dmxGLXSwapGroupSupport) {
+       if (!denied_extensions ||
+	   !strstr(denied_extensions, "GLX_SGIX_swap_group")) {
+	   strcat(ExtensionsString, "GLX_SGIX_swap_group");
+	   if (!denied_extensions ||
+	       !strstr(denied_extensions, "GLX_SGIX_swap_barrier")) {
+	       strcat(ExtensionsString, " GLX_SGIX_swap_barrier");
+	   }
+       }
+   }
+
+}
+
+void __glXScreenInit(GLint numscreens)
+{
+   int s;
+   int c;
+   DMXScreenInfo *dmxScreen0 = &dmxScreens[0];
+    __glXNumActiveScreens = numscreens;
+
+
+   CalcServerVersionAndExtensions();
+
+
+   __glXFBConfigs = NULL;
+   __glXNumFBConfigs = 0;
+
+   if ( (__glXVersionMajor == 1 && __glXVersionMinor >= 3) ||
+        (__glXVersionMajor > 1) ||
+	( strstr(ExtensionsString, "GLX_SGIX_fbconfig") )      ) {
+
+      /*
+      // Initialize FBConfig info.
+      // find the set of FBConfigs that are present on all back-end
+      // servers - only those configs will be supported
+       */
+      __glXFBConfigs = (__GLXFBConfig **)Xalloc( dmxScreen0->numFBConfigs * 
+	                      (numscreens+1) * sizeof(__GLXFBConfig *) );
+      __glXNumFBConfigs = 0;
+   
+      for (c=0; c<dmxScreen0->numFBConfigs; c++) { 
+	 __GLXFBConfig *cfg = NULL;
+
+	 if (numscreens > 1) {
+	    for (s=1; s<numscreens; s++) {
+	       DMXScreenInfo *dmxScreen = &dmxScreens[s];
+	       __GLXscreenInfo *glxScreen = &__glXActiveScreens[s];
+	  
+	       cfg = FindMatchingFBConfig( &dmxScreen0->fbconfigs[c],
+		                           dmxScreen->fbconfigs, 
+		                           dmxScreen->numFBConfigs );
+	       __glXFBConfigs[ __glXNumFBConfigs * (numscreens+1) + s + 1 ] = cfg;
+	       if (!cfg) {
+		  dmxLog(dmxInfo,"screen0 FBConfig 0x%x is missing on screen#%d\n", dmxScreen0->fbconfigs[c].id, s);
+		  break;
+	       }
+	       else {
+		  dmxLog(dmxInfo,"screen0 FBConfig 0x%x matched to  0x%x on screen#%d\n", dmxScreen0->fbconfigs[c].id, cfg->id, s);
+	       }
+	    }
+         }
+	 else {
+	    cfg = &dmxScreen0->fbconfigs[c];
+	 }
+
+	 if (cfg) {
+
+	    /* filter out overlay visuals */
+	    if (cfg->level == 0) {
+	       __GLXFBConfig *proxy_cfg;
+
+	       __glXFBConfigs[ __glXNumFBConfigs * (numscreens+1) + 1 ] = 
+	               &dmxScreen0->fbconfigs[c];
+
+	       proxy_cfg = Xalloc( sizeof(__GLXFBConfig) );
+	       memcpy( proxy_cfg, cfg, sizeof(__GLXFBConfig) );
+	       proxy_cfg->id =  FakeClientID(0);
+	       /* visual will be associated later in __glXGetFBConfigs */
+	       proxy_cfg->associatedVisualId =  (unsigned int)-1;
+
+	       __glXFBConfigs[ __glXNumFBConfigs * (numscreens+1) + 0 ] = proxy_cfg;
+
+	       __glXNumFBConfigs++;
+	    }
+
+	 }
+
+      }
+
+    }
+
+}
+
+void __glXScreenReset(void)
+{
+  __glXNumActiveScreens = 0;
+}
+
+char *__glXGetServerString( unsigned int name ) 
+{
+   char *ret = NULL;
+
+   switch( name) {
+
+      case GLX_VENDOR:
+	 ret = GLXServerVendorName;
+	 break;
+
+      case GLX_VERSION:
+	 ret = GLXServerVersion;
+	 break;
+
+      case GLX_EXTENSIONS:
+	 ret = ExtensionsString;
+	 break;
+
+      default:
+	 break;
+   }
+
+   return( ret );
+
+}
+
+
+__GLXFBConfig *glxLookupFBConfig( GLXFBConfigID id )
+{
+   int i,j;
+
+   for (i=0, j=0; i<__glXNumFBConfigs; i++,j+=(__glXNumActiveScreens+1) ) {
+      if ( __glXFBConfigs[j]->id == id) 
+	 return( __glXFBConfigs[j] );
+   }
+
+   return(NULL);
+}
+
+__GLXFBConfig *glxLookupFBConfigByVID( VisualID vid )
+{
+   int i,j;
+
+   for (i=0, j=0; i<__glXNumFBConfigs; i++,j+=(__glXNumActiveScreens+1) ) {
+      if ( __glXFBConfigs[j]->associatedVisualId == vid) 
+	 return( __glXFBConfigs[j] );
+   }
+
+   return(NULL);
+}
+
+__GLXFBConfig *glxLookupBackEndFBConfig( GLXFBConfigID id, int screen )
+{
+   int i;
+   int j;
+
+   for (i=0, j=0; i<__glXNumFBConfigs; i++,j+=(__glXNumActiveScreens+1) ) {
+      if ( __glXFBConfigs[j]->id == id) 
+	 return( __glXFBConfigs[j+screen+1] );
+   }
+
+   return(NULL);
+
+}
+
+int glxIsExtensionSupported( char *ext )
+{
+   return( strstr(ExtensionsString, ext) != NULL );
+}