Re: [osg-users] Tutorials
In my perception forums will be more scalable if the user community grows, because you can not expect every member to follow all discussions that are currently happening (or happened if you were on vacation for two weeks). Or you get a decent MUA. Getting an additional login AND having to run a browser to sift through new threads is inconvenient. ML's are simply more convenient if you have a wonderfully configured MUA compared to the mucky web interfaces. Speaking of web interfaces, a forum is pretty much a mailing list archive in design, isn't there some web interface for mailing lists that allows you to browse threads as in a forum? Perhaps you could help out installing such software so that the community can choose from two interfaces: SMTP and HTML. Again, I'll stick with my MUA (mutt) since it has better controls and UI than any forum web interface I've ever seen. I also pipe my messages through procmail which has a vast collection of filtering I require. It is also conveniently started from my shell so I don't have to click around or use the mouse to partake in OSG discussions. (I rarely even have the mouse connected) So you see, a web interface would ruin my perfect setup = not good. :) /Peter my two cents, Roland Smeenk From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ricko 3D Sent: maandag 27 augustus 2007 6:07 To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] Tutorials Nick Prudent wrote: There *is* an OSG discussion forum: http://www.3drealtimesimulation.com/3dsceneBB/index.php It's just not very official (and not used much, from what I can see...). Great! I'll bet it would be used much more if it were listed prominently on the wiki like just below the mailing list link or on the getting started page for example. I searched the wiki and found a link to an official FAQ on that site but no links from the wiki to the forum at all. Jean-Sébastien wrote: you'll see the arguments for and against. A compromise may be reached, but the mailing list is here to stay. Most OSS projects have at least two mailing lists, some much more. It's a very effective means of discussing development subjects. Thanks for the quick response. Seems funny to say anything is here to stay related to any constantly evolving technology project, or anything related to the Internet. I was just offering my observations coming at this project fresh. My opinion was simply that the mailing list method seems outdated. I wasn't suggesting it is not effective, just comparing it to the features/benefits of newer community technologies I've used on other projects. This e-mail and its contents are subject to the DISCLAIMER at http://www.tno.nl/disclaimer/email.html ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OpenThreads doc?
Hi Ben, On 8/31/07, Ben Discoe [EMAIL PROTECTED] wrote: I got OSG 2.0 building and moved my community up to it, thanks for the help on that. Next question: does OpenThreads have any documentation, at all? I have looked all over the web and the wiki, and not found a bit, not even minimal doxygen docs. There is only the doxygen docs I'm afraid. I am hoping to port some code from pthreads to OpenThreads, and definitely need to know how OpenThreads works in order to do that. The OSG uses OpenThreads pretty extensively so this might be able to help guide you a bit. In general I'd say OpenThreads is pretty straight forward to use, and maps underlying pthreads pretty closely. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] crash in osgText with version 2.1.8
On 9/1/07, Cedric Pinson [EMAIL PROTECTED] wrote: It works fine now. But what is the performance penalty i mean of which order do you think it is See my other email about DeleteHandler for a full explanation - I measured 6% hit on fps on a model that was cull limited. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Is text thread safe in 2.0.0?
On 8/31/07, Robert Osfield [EMAIL PROTECTED] wrote: Now I do need qualify pretty solid, its solid if I just leave the osgtext --mt to do its stuff, but if I enable stats by pressing 's' I getting freetype warnings printed out to the console and sometimes get gargabe text on the stats. Since the mutexes I've added were per Font, I suspect that perhaps freetype can't handle separate threads using different fonts at the same time - it can only handle single threaded access. This is my suspicion, one I haven't tested yet. I'll do this another day though, its late in day and my RSI is biting. I have just changed the Font mutex I added yesterday to a static Font mutex that is shared between all Font's. This change ensures the serialization of calls to freetype and clears the remaining problem of enabling stats while running osgtext --mt. This change in now checked in. Could user check out the svn version of the OSG and test out the changes to osgText and let me know how you get on. Robert. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Friend functions
Hello,
I've got a small question that I've not been able to answer looking at c++
tutorials:
- Can friend functions call other methods from the classes they are friends
with?
Example
class First
{
public:
void function1();
};
class Second
{
public:
void function2();
friend void First::function1();
};
First::function1()
{ function2(); }
Thanks.
Renan M Z Mendes
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Re: [osg-users] Friend functions
try it
2007/9/1, Renan Mendes [EMAIL PROTECTED]:
Hello,
I've got a small question that I've not been able to answer looking at c++
tutorials:
- Can friend functions call other methods from the classes they are
friends with?
Example
class First
{
public:
void function1();
};
class Second
{
public:
void function2();
friend void First::function1();
};
First::function1()
{ function2(); }
Thanks.
Renan M Z Mendes
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Re: [osg-users] Friend functions
Thank you for the commentary. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Friend functions
As David said, you should really try something like this first and then if
you have an issue try asking the question or Google it.
See http://www.parashift.com/c++-faq-lite/friends.html
Also the OSG forum is not really the place to be asking C++ questions, there
are many places better suited for those type of questions
__
Gordon Tomlinson
Email : [EMAIL PROTECTED]
Website : www.vis-sim.com www.gordontomlinson.com
__
Self defence is not a function of learning tricks
but is a function of how quickly and intensely one
can arouse one's instinct for survival
-Master Tambo Tetsura
_
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of David Callu
Sent: 01 September 2007 18:03
To: osg-users@lists.openscenegraph.org
Subject: Re: [osg-users] Friend functions
try it
2007/9/1, Renan Mendes [EMAIL PROTECTED]:
Hello,
I've got a small question that I've not been able to answer looking at c++
tutorials:
- Can friend functions call other methods from the classes they are friends
with?
Example
class First
{
public:
void function1();
};
class Second
{
public:
void function2();
friend void First::function1();
};
First::function1()
{ function2(); }
Thanks.
Renan M Z Mendes
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Re: [osg-users] OpenThreads external referrence
Hi Robert, On 8/30/07, olaf flebbe [EMAIL PROTECTED] wrote: svn: PROPFIND request failed on '/svn/osg/OpenThreads/trunk/include/OpenThreads' svn: PROPFIND of '/svn/osg/OpenThreads/trunk/include/OpenThreads': 301 Moved Permanently (http://www.openscenegraph.com) IMHO the domain part of the svn:externals is incorrect (.com rather than .org). IMHO you don't need the IMHO, the svn externals reference is in correct now, it wasn't originally because 2.0 went out when we still had to use the .com domain. I don't know svn well enough to know how to efficient fix this in retrospect. Suggestions? As far as I know, properties are versioned. I would suggest propedit (or simply propdel/propset). unfortunatly propedit only works with local copies. Use svn propedit svn:externals . on a local copy of the 2.0 branch, and commit. IMHO the external reference in a fixed version-branch should not point to a moving target trunk. Well a branch should map to branch, I don't personally know how to set this. Alas I'm not expert in everything having to spread myself too thinly. Do you know how to set this? -- If you are doing propedit, change the URL from trunk to the right branch in OpenThreads. Unfortunatly I do not know which branch of OT was current when OSG made 2.0. Cheers Olaf ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::DeleteHander - the good, the bad and ugly
I tried a little brut test about smart pointer from osg and the similar
approch in boost with instrusive_ptr
here the result with the source code:
PROFILE_ROOT prt 100.00 glb 100.00 - time 31.785504 avg 31.785504
ncall 1
osg_smprt 2.85 glb 2.85 - time 0.905553 avg 0.905553
ncall 1
boost_sm prt 2.84 glb 2.84 - time 0.901856 avg 0.901856
ncall 1
boost2 prt 23.95 glb 23.95 - time 7.611869 avg 7.611869
ncall 1
osg2 prt 70.37 glb 70.37 - time 22.366193 avg 22.366193
ncall 1
Cedric
Robert Osfield wrote:
Hi André,
On 8/31/07, André Garneau [EMAIL PROTECTED] wrote:
FYI you might want to check the Boost::intrusive_ptr implementation (similar
in concept to OSG's ref_ptr) as it is using an underlying implementation
that does atomic reference counting (using CPU native Interlocked
test/increments). Note that I'm not suggesting to use Boost, just to get
ideas from this implementation.
Thanks for the suggestion.
I'm chasing bugs right now. Could members of the community have a
look into this? i.e. the possibility of adding atmoic counts into
OpenThreads and ref_ptr.
Cheers,
Robert.
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/*
#
# Copyright (C) 2007 Cedric Pinson
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# Authors:
# Cedric Pinson [EMAIL PROTECTED]
#
#
*/
#ifdef HAVE_CONFIG_H
#include ../config.h
#endif
#include iostream
#ifdef USE_NPROFILE
#include nprofile/profile.h
#endif
#include cstdlib
#include osg/Referenced
#include osg/ref_ptr
#include cmath
#include boost/config.hpp
#include boost/shared_ptr.hpp
#include boost/intrusive_ptr.hpp
struct Test : public osg::Referenced
{
protected:
public:
int value;
Test(): value(1) {}
void test1() { value+=1;}
void test2() { value+=2;}
};
struct TestBoost
{
unsigned int count;
TestBoost(): count(0)
{
value = 1;
}
int value;
void test1() { value+= 1;}
void test2() { value+=2;}
};
void intrusive_ptr_add_ref(TestBoost * p)
{
++p-count;
}
void intrusive_ptr_release(TestBoost * p)
{
if(--p-count == 0) delete p;
}
static boost::intrusive_ptrTestBoost test_boost= new TestBoost;
static osg::ref_ptrTest test_osg = new Test;
void testboost(int n)
{
NPROFILE_SAMPLE(boost_sm);
for (int i = 0;i n; i++) {
for (int j = 0;j n; j++) {
test_boost-test1();
test_boost-test2();
test_boost-test1();
test_boost-test2();
test_boost-test1();
test_boost-test2();
}
}
}
void testboost2(int n)
{
NPROFILE_SAMPLE(boost2);
for (int i = 0;i n; i++) {
boost::intrusive_ptrTestBoost test_boost2;
boost::intrusive_ptrTestBoost test_boost3;
test_boost2 = test_boost;
test_boost3 = test_boost2;
test_boost = test_boost3;
}
}
void testosg(int n)
{
NPROFILE_SAMPLE(osg_sm);
for (int i = 0;i n; i++) {
for (int j = 0;j n; j++) {
test_osg-test1();
test_osg-test2();
test_osg-test1();
test_osg-test2();
test_osg-test1();
test_osg-test2();
}
}
}
void testosg2(int n)
{
NPROFILE_SAMPLE(osg2);
for (int i = 0;i n; i++) {
osg::ref_ptrTest test_osg2;
osg::ref_ptrTest test_osg3;
test_osg2 = test_osg;
test_osg3 = test_osg2;
test_osg = test_osg3;
}
}
void func(int arg)
{
// NPROFILE_SAMPLE(root);
testosg(arg);
testboost(arg);
testboost2(arg);
testosg2(arg);
}
int main(int argc , char **argv)
{
unsigned int arg = 2147483647;
std::cout arg std::endl;
nprf::GetProfiler()-Reset();
func(arg);
nprf::GetProfiler()-EndProfile();
nprf::GetProfiler()-GetRootNode()-DisplayFlatStats(std::cout);
std::cout test_osg-value std::endl;
std::cout test_boost-value std::endl;
return 0;
}
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