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xenocara/xserver/hw/dmx/glxProxy/glxscreens.c

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/*
* 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_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"
#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 );
}
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