Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Robert,
Sorry for reviving this old thread.
But I stumbled across the exact same problem, and solving this issue
with the FindFileCallback is a real PITA.
I tried the patch Katharina provided (there is still a typo in here, but
nevertheless, it solves the issue.)
The problem with the FindFileCallback is that it simply gives you no
context. In my compiler I need to distinguish files that are referenced
inside the openflight from those which are searched from other sources
(e.g. looking up additional textures based on a name scheme).
With the the ReadFileCallback it is much easier to maintain such context.
So I second Katharinas idea.
Implementation-wise I'd provide an option to support calling the
readfile even if no valid path was found through the FindFileCallback
and leave the default option to the old behavior.
Would that be exectable?
cheers
Sebastian
HI Katharina,
In the svn/trunk version of the OSG I added support for overriding the
find file operation using an osgDB::FindFileCallback, that you attach
to the osgDB::Registry or an osgDB::Options object. Perhaps this
would be the best way for you to intercept and do something special
when texture files are not found.
Cheers,
Robert.
On Mon, Sep 21, 2009 at 1:49 PM, Katharina Plugge
katharina.plu...@web.de wrote:
Hello,
the OpenFlight-Plugin prevents reacting on missing Textures via a
ReadFileCallback, because osgDB::readRefImageFile (called by function
readTexture) is not called if the file does not exist. Would be great if this
could be changed.
A fix could look like this (file PaletteRecords.cpp, line 436):
Code:
virtual void readRecord(RecordInputStream in, Document document)
{
if (document.getTexturePoolParent())
// Using parent's texture pool -- ignore this record.
return;
int maxLength = (document.version() VERSION_14) ? 80 : 200;
std::string filename = in.readString(maxLength);
int32 index = in.readInt32(-1);
/*int32 x =*/ in.readInt32();
/*int32 y =*/ in.readInt32();
osg::StateSet* stateset = NULL;
// Need full path for unique key in local texture cache.
std::string pathname =
osgDB::findDataFile(filename,document.getOptions());
if (pathname.empty())
{
// allow the aplication to react on missing texture via
ReadFileCallback
stateset = readTexture(filename,document);
if( !stateset)
{
osg::notify(osg::WARN) Can't find texture ( index )
filename std::endl;
return;
}
}
else
{
// Is texture in local cache?
osg::StateSet* stateset =
flt::Registry::instance()-getTextureFromLocalCache(pathname);
}
// Read file if not in cache.
if (!stateset)
{
stateset = readTexture(pathname,document);
// Add to texture cache.
flt::Registry::instance()-addTextureToLocalCache(pathname,stateset);
}
// Add to texture pool.
TexturePool* tp = document.getOrCreateTexturePool();
(*tp)[index] = stateset;
}
Thank you!
Greetings,
Katharina[/code]
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Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Robert,
I'm preparing a submission right now. Don't hold your breath ...
Hi Sebastien,
I don't really have any strong opinions, nor a submission which to
review. If you send a full modified file into osg-submissions I can
review it and give you a more informed decions.
Cheers,
Robert.
On 5 August 2013 15:40, Sebastian Messerschmidt
sebastian.messerschm...@gmx.de wrote:
Hi Robert,
Sorry for reviving this old thread.
But I stumbled across the exact same problem, and solving this issue with
the FindFileCallback is a real PITA.
I tried the patch Katharina provided (there is still a typo in here, but
nevertheless, it solves the issue.)
The problem with the FindFileCallback is that it simply gives you no
context. In my compiler I need to distinguish files that are referenced
inside the openflight from those which are searched from other sources (e.g.
looking up additional textures based on a name scheme).
With the the ReadFileCallback it is much easier to maintain such context.
So I second Katharinas idea.
Implementation-wise I'd provide an option to support calling the readfile
even if no valid path was found through the FindFileCallback and leave the
default option to the old behavior.
Would that be exectable?
cheers
Sebastian
HI Katharina,
In the svn/trunk version of the OSG I added support for overriding the
find file operation using an osgDB::FindFileCallback, that you attach
to the osgDB::Registry or an osgDB::Options object. Perhaps this
would be the best way for you to intercept and do something special
when texture files are not found.
Cheers,
Robert.
On Mon, Sep 21, 2009 at 1:49 PM, Katharina Plugge
katharina.plu...@web.de wrote:
Hello,
the OpenFlight-Plugin prevents reacting on missing Textures via a
ReadFileCallback, because osgDB::readRefImageFile (called by function
readTexture) is not called if the file does not exist. Would be great if
this could be changed.
A fix could look like this (file PaletteRecords.cpp, line 436):
Code:
virtual void readRecord(RecordInputStream in, Document document)
{
if (document.getTexturePoolParent())
// Using parent's texture pool -- ignore this record.
return;
int maxLength = (document.version() VERSION_14) ? 80 : 200;
std::string filename = in.readString(maxLength);
int32 index = in.readInt32(-1);
/*int32 x =*/ in.readInt32();
/*int32 y =*/ in.readInt32();
osg::StateSet* stateset = NULL;
// Need full path for unique key in local texture cache.
std::string pathname =
osgDB::findDataFile(filename,document.getOptions());
if (pathname.empty())
{
// allow the aplication to react on missing texture via
ReadFileCallback
stateset = readTexture(filename,document);
if( !stateset)
{
osg::notify(osg::WARN) Can't find texture ( index
) filename std::endl;
return;
}
}
else
{
// Is texture in local cache?
osg::StateSet* stateset =
flt::Registry::instance()-getTextureFromLocalCache(pathname);
}
// Read file if not in cache.
if (!stateset)
{
stateset = readTexture(pathname,document);
// Add to texture cache.
flt::Registry::instance()-addTextureToLocalCache(pathname,stateset);
}
// Add to texture pool.
TexturePool* tp = document.getOrCreateTexturePool();
(*tp)[index] = stateset;
}
Thank you!
Greetings,
Katharina[/code]
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Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Sebastien,
I don't really have any strong opinions, nor a submission which to
review. If you send a full modified file into osg-submissions I can
review it and give you a more informed decions.
Cheers,
Robert.
On 5 August 2013 15:40, Sebastian Messerschmidt
sebastian.messerschm...@gmx.de wrote:
Hi Robert,
Sorry for reviving this old thread.
But I stumbled across the exact same problem, and solving this issue with
the FindFileCallback is a real PITA.
I tried the patch Katharina provided (there is still a typo in here, but
nevertheless, it solves the issue.)
The problem with the FindFileCallback is that it simply gives you no
context. In my compiler I need to distinguish files that are referenced
inside the openflight from those which are searched from other sources (e.g.
looking up additional textures based on a name scheme).
With the the ReadFileCallback it is much easier to maintain such context.
So I second Katharinas idea.
Implementation-wise I'd provide an option to support calling the readfile
even if no valid path was found through the FindFileCallback and leave the
default option to the old behavior.
Would that be exectable?
cheers
Sebastian
HI Katharina,
In the svn/trunk version of the OSG I added support for overriding the
find file operation using an osgDB::FindFileCallback, that you attach
to the osgDB::Registry or an osgDB::Options object. Perhaps this
would be the best way for you to intercept and do something special
when texture files are not found.
Cheers,
Robert.
On Mon, Sep 21, 2009 at 1:49 PM, Katharina Plugge
katharina.plu...@web.de wrote:
Hello,
the OpenFlight-Plugin prevents reacting on missing Textures via a
ReadFileCallback, because osgDB::readRefImageFile (called by function
readTexture) is not called if the file does not exist. Would be great if
this could be changed.
A fix could look like this (file PaletteRecords.cpp, line 436):
Code:
virtual void readRecord(RecordInputStream in, Document document)
{
if (document.getTexturePoolParent())
// Using parent's texture pool -- ignore this record.
return;
int maxLength = (document.version() VERSION_14) ? 80 : 200;
std::string filename = in.readString(maxLength);
int32 index = in.readInt32(-1);
/*int32 x =*/ in.readInt32();
/*int32 y =*/ in.readInt32();
osg::StateSet* stateset = NULL;
// Need full path for unique key in local texture cache.
std::string pathname =
osgDB::findDataFile(filename,document.getOptions());
if (pathname.empty())
{
// allow the aplication to react on missing texture via
ReadFileCallback
stateset = readTexture(filename,document);
if( !stateset)
{
osg::notify(osg::WARN) Can't find texture ( index
) filename std::endl;
return;
}
}
else
{
// Is texture in local cache?
osg::StateSet* stateset =
flt::Registry::instance()-getTextureFromLocalCache(pathname);
}
// Read file if not in cache.
if (!stateset)
{
stateset = readTexture(pathname,document);
// Add to texture cache.
flt::Registry::instance()-addTextureToLocalCache(pathname,stateset);
}
// Add to texture pool.
TexturePool* tp = document.getOrCreateTexturePool();
(*tp)[index] = stateset;
}
Thank you!
Greetings,
Katharina[/code]
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Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Brede, My goal isn't to load Openflight files as fast as possible but to convert them in IVE file format using the least memory consumption as possible, ie not reading useless texture. I think it will be great for the community to bring this change, don't you ? I will try (as soon as I have time to work on) to modify the plugin to only read the filenames from the texture palette and store them instead of storing texture images. Later, when finding a face using a texture, load the corresponding image. I don't want to create a specific program with Multigen API to modify Openflight models because I think the first solution to improve the plugin is best for the OSG-users and for me of wourse ;-). Kind regards, 2010/3/3 Brede Johansen bre...@gmail.com Hi Alexandre, On Wed, Mar 3, 2010 at 11:50 AM, Alexandre Amalric alex.pix...@gmail.com wrote: Maybe that the original author from this plugin can tell me if the texture palette record has to be read or not, so we may decide to skip it. I'm the original author of the OpenFlight reader, the write capability was later added by Paul. You have to read the texture palette record but you can delay the loading of textures until they are actually used by a face or mesh. But it would require some modifications to the loader as others have already explained. Having said that, I want to add that OpenFlight is not a runtime format made for fast loading. Also, the OpenFlight loader was not made with fast load times in mind but rather to preserve the structure and information in the flt file. Gordon wrote this on this mailing list a long time ago: The problem with the OpenFlight format along with most other Modeling formats is that they contain a lot of information that the Modeling package contains and needs and has to support a wide range of uses, Packages, 3d API packages etc. But the runtime API typically does not need most of the information So really there is not too much you can do to speed up the reading of an OpenFlight file, there are some things you can do such as combine textures into one texture ( there are tools in Creator to do this etc) etc. but the gain will not be that great. All 3d APIs have there own binary format that is more or less a binary dump of the tree ( yes I know they are more than that), thus the native binary format is always nearly faster than using a native modeling format such as OpenFlight, Geo, 3ds, Max etc.. That's why OSG has IVE, Vega had FST, Vega Prime has VSB, Performer has PFB etc.. So if you want fast loading convert (osgconv) your OpenFlight files to ive or the new binary osg format. Regards, Brede ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Alexandre AMALRIC Ingénieur RD === PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Alexandre, Even if textures in the OpenFlight texture palette are read into memory doesn't mean they are added to the osg scenegraph. It would be helpful if you can provide two OpenFlight test models, one of them with additional unused textures in the palette. Then we can verify if they differ in size when converted to ive. Regards Brede On Fri, Mar 5, 2010 at 12:44 PM, Alexandre Amalric alex.pix...@gmail.com wrote: Hi Brede, My goal isn't to load Openflight files as fast as possible but to convert them in IVE file format using the least memory consumption as possible, ie not reading useless texture. I think it will be great for the community to bring this change, don't you ? I will try (as soon as I have time to work on) to modify the plugin to only read the filenames from the texture palette and store them instead of storing texture images. Later, when finding a face using a texture, load the corresponding image. I don't want to create a specific program with Multigen API to modify Openflight models because I think the first solution to improve the plugin is best for the OSG-users and for me of wourse ;-). Kind regards, 2010/3/3 Brede Johansen bre...@gmail.com Hi Alexandre, On Wed, Mar 3, 2010 at 11:50 AM, Alexandre Amalric alex.pix...@gmail.com wrote: Maybe that the original author from this plugin can tell me if the texture palette record has to be read or not, so we may decide to skip it. I'm the original author of the OpenFlight reader, the write capability was later added by Paul. You have to read the texture palette record but you can delay the loading of textures until they are actually used by a face or mesh. But it would require some modifications to the loader as others have already explained. Having said that, I want to add that OpenFlight is not a runtime format made for fast loading. Also, the OpenFlight loader was not made with fast load times in mind but rather to preserve the structure and information in the flt file. Gordon wrote this on this mailing list a long time ago: The problem with the OpenFlight format along with most other Modeling formats is that they contain a lot of information that the Modeling package contains and needs and has to support a wide range of uses, Packages, 3d API packages etc. But the runtime API typically does not need most of the information So really there is not too much you can do to speed up the reading of an OpenFlight file, there are some things you can do such as combine textures into one texture ( there are tools in Creator to do this etc) etc. but the gain will not be that great. All 3d APIs have there own binary format that is more or less a binary dump of the tree ( yes I know they are more than that), thus the native binary format is always nearly faster than using a native modeling format such as OpenFlight, Geo, 3ds, Max etc.. That's why OSG has IVE, Vega had FST, Vega Prime has VSB, Performer has PFB etc.. So if you want fast loading convert (osgconv) your OpenFlight files to ive or the new binary osg format. Regards, Brede ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Alexandre AMALRIC Ingénieur RD === PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr ___ 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] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Brede, The problem isn't in the size of the converted ive file but in the memory consumption osgconv.exe use when converting this kind of openflight files. The resulting ive file isn't bigger than expected but the process to convert the file use too much memory than really needed. 2010/3/5 Brede Johansen bre...@gmail.com Alexandre, Even if textures in the OpenFlight texture palette are read into memory doesn't mean they are added to the osg scenegraph. It would be helpful if you can provide two OpenFlight test models, one of them with additional unused textures in the palette. Then we can verify if they differ in size when converted to ive. Regards Brede On Fri, Mar 5, 2010 at 12:44 PM, Alexandre Amalric alex.pix...@gmail.com wrote: Hi Brede, My goal isn't to load Openflight files as fast as possible but to convert them in IVE file format using the least memory consumption as possible, ie not reading useless texture. I think it will be great for the community to bring this change, don't you ? I will try (as soon as I have time to work on) to modify the plugin to only read the filenames from the texture palette and store them instead of storing texture images. Later, when finding a face using a texture, load the corresponding image. I don't want to create a specific program with Multigen API to modify Openflight models because I think the first solution to improve the plugin is best for the OSG-users and for me of wourse ;-). Kind regards, 2010/3/3 Brede Johansen bre...@gmail.com Hi Alexandre, On Wed, Mar 3, 2010 at 11:50 AM, Alexandre Amalric alex.pix...@gmail.com wrote: Maybe that the original author from this plugin can tell me if the texture palette record has to be read or not, so we may decide to skip it. I'm the original author of the OpenFlight reader, the write capability was later added by Paul. You have to read the texture palette record but you can delay the loading of textures until they are actually used by a face or mesh. But it would require some modifications to the loader as others have already explained. Having said that, I want to add that OpenFlight is not a runtime format made for fast loading. Also, the OpenFlight loader was not made with fast load times in mind but rather to preserve the structure and information in the flt file. Gordon wrote this on this mailing list a long time ago: The problem with the OpenFlight format along with most other Modeling formats is that they contain a lot of information that the Modeling package contains and needs and has to support a wide range of uses, Packages, 3d API packages etc. But the runtime API typically does not need most of the information So really there is not too much you can do to speed up the reading of an OpenFlight file, there are some things you can do such as combine textures into one texture ( there are tools in Creator to do this etc) etc. but the gain will not be that great. All 3d APIs have there own binary format that is more or less a binary dump of the tree ( yes I know they are more than that), thus the native binary format is always nearly faster than using a native modeling format such as OpenFlight, Geo, 3ds, Max etc.. That's why OSG has IVE, Vega had FST, Vega Prime has VSB, Performer has PFB etc.. So if you want fast loading convert (osgconv) your OpenFlight files to ive or the new binary osg format. Regards, Brede ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Alexandre AMALRIC Ingénieur RD === PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr ___ 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 -- Alexandre AMALRIC Ingénieur RD === PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Brede, I do not run out of memory, but the process to convert those files is not optimal, it takes much memory than needed and it takes more time to convert because of reading all useless textures. Here at work, I'm asked to optimize the process of our internal files convertion process (speed and memory). That's not really a problem for all osg-users but I think it could be usefull for some of them, facing those kind of openflight files... 2010/3/5 Brede Johansen bre...@gmail.com Alexandre, The file conversion uses a bit more memory than needed but I fail to see the problem. Do you run out of memory? Brede On Fri, Mar 5, 2010 at 2:02 PM, Alexandre Amalric alex.pix...@gmail.com wrote: Hi Brede, The problem isn't in the size of the converted ive file but in the memory consumption osgconv.exe use when converting this kind of openflight files. The resulting ive file isn't bigger than expected but the process to convert the file use too much memory than really needed. 2010/3/5 Brede Johansen bre...@gmail.com Alexandre, Even if textures in the OpenFlight texture palette are read into memory doesn't mean they are added to the osg scenegraph. It would be helpful if you can provide two OpenFlight test models, one of them with additional unused textures in the palette. Then we can verify if they differ in size when converted to ive. Regards Brede ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Alexandre AMALRIC Ingénieur RD === PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Alexandre, Ok, I was put off track because you said My goal isn't to load Openflight files as fast as possible ... If you decide to fix the OpenFlight files you might be lucky and find a tool that does the job. http://www.presagis.com/peer_forum/viewthread/523/ Brede On Fri, Mar 5, 2010 at 3:50 PM, Alexandre Amalric alex.pix...@gmail.com wrote: Hi Brede, I do not run out of memory, but the process to convert those files is not optimal, it takes much memory than needed and it takes more time to convert because of reading all useless textures. Here at work, I'm asked to optimize the process of our internal files convertion process (speed and memory). That's not really a problem for all osg-users but I think it could be usefull for some of them, facing those kind of openflight files... 2010/3/5 Brede Johansen bre...@gmail.com Alexandre, The file conversion uses a bit more memory than needed but I fail to see the problem. Do you run out of memory? Brede ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
I know this command in Creator but we want to automatize the process because we work on hundred of files like this. Building a creator API is maybe a solution but I don't know if there is a function to remove unused texture on a Openflight model. I will look for this. you dont need any api for this. simply download the openflight spec, read the palette record, parse the face record and count the used textures, and clone all the records into new file. Very simple -Nick On Tue, Mar 2, 2010 at 10:07 AM, Alexandre Amalric alex.pix...@gmail.comwrote: Hi Paul, *You'd need to modify the OpenFlight plugin to support this.* I tried to do this but in the TexturePalette::readRecord function there is no way to know if a texture is used or not by the model. The only parameters we get from a texture (RecordInputStream) are : - the filename - the index - X - Y hi Tomlinsom, Simplest way would be to open up the file in Creator and use the remove unused textures command I know this command in Creator but we want to automatize the process because we work on hundred of files like this. Building a creator API is maybe a solution but I don't know if there is a function to remove unused texture on a Openflight model. I will look for this. Kind regards, 2010/3/2 Tomlinson, Gordon gtomlin...@overwatch.textron.com Simplest way would be to open up the file in Creator and use the remove unused textures command You could also write a simple Creator API app to do this on a list of flight files Another option would be to load the file in to OSG and save out as OSG or IVE file again you could write a simple script to do this for many files Gordon Tomlinson Product Manager 3d Technology Project Wyvern Overwatch(r) An Operating Unit of Textron Systems -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul Martz Sent: Monday, March 01, 2010 10:29 AM To: OpenSceneGraph Users Subject: Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback Alexandre Amalric wrote: Hi osg-users, I have a question concerning the palette texture record. When converting a flt model which texture palette contains useless texture, they are even read. Is there a way to read only used texture. Let's say I have a simple model file using 1 texture but my texture palette in corresponding openflight model contains 100 textures, so 99% are useless but the plugin read them. I know that it is a special case, but when working on Openflight models with Multigen Paradigm it happens a lot. Any suggestion ? You'd need to modify the OpenFlight plugin to support this. -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or ghttp://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 -- Alexandre AMALRIC Ingénieur RD === PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr ___ 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] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Andreas, Have a look at Remo 3D (www.remograph.com) which supports removing unused textures in OpenFlight files very easily through scripting. A simple Lua script would let you remove unused textures in a large number of files. I just tested Remo3d scripting in Lua, it's very usefull. Unfortunately it isn't free, if we want to save models with more than 100 polygons we have to purchase the product. Hi Jason, I think what Paul meant is that you'd have to modify the plugin to only load the texture when it encounters a reference to it in the traversal of the main document. Currently, it loads the texture palette at the beginning. You'd have to modify it in some way to delay the actual texture load until a primary record references it. I think about this solution since the begining but I'm not sure that those modifications won't bring errors when using the plugin in a normal way. Maybe that the original author from this plugin can tell me if the texture palette record has to be read or not, so we may decide to skip it. 2010/3/3 Trajce (Nick) Nikolov nikolov.tra...@gmail.com I know this command in Creator but we want to automatize the process because we work on hundred of files like this. Building a creator API is maybe a solution but I don't know if there is a function to remove unused texture on a Openflight model. I will look for this. you dont need any api for this. simply download the openflight spec, read the palette record, parse the face record and count the used textures, and clone all the records into new file. Very simple -Nick On Tue, Mar 2, 2010 at 10:07 AM, Alexandre Amalric alex.pix...@gmail.comwrote: Hi Paul, *You'd need to modify the OpenFlight plugin to support this.* I tried to do this but in the TexturePalette::readRecord function there is no way to know if a texture is used or not by the model. The only parameters we get from a texture (RecordInputStream) are : - the filename - the index - X - Y hi Tomlinsom, Simplest way would be to open up the file in Creator and use the remove unused textures command I know this command in Creator but we want to automatize the process because we work on hundred of files like this. Building a creator API is maybe a solution but I don't know if there is a function to remove unused texture on a Openflight model. I will look for this. Kind regards, 2010/3/2 Tomlinson, Gordon gtomlin...@overwatch.textron.com Simplest way would be to open up the file in Creator and use the remove unused textures command You could also write a simple Creator API app to do this on a list of flight files Another option would be to load the file in to OSG and save out as OSG or IVE file again you could write a simple script to do this for many files Gordon Tomlinson Product Manager 3d Technology Project Wyvern Overwatch(r) An Operating Unit of Textron Systems -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul Martz Sent: Monday, March 01, 2010 10:29 AM To: OpenSceneGraph Users Subject: Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback Alexandre Amalric wrote: Hi osg-users, I have a question concerning the palette texture record. When converting a flt model which texture palette contains useless texture, they are even read. Is there a way to read only used texture. Let's say I have a simple model file using 1 texture but my texture palette in corresponding openflight model contains 100 textures, so 99% are useless but the plugin read them. I know that it is a special case, but when working on Openflight models with Multigen Paradigm it happens a lot. Any suggestion ? You'd need to modify the OpenFlight plugin to support this. -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or ghttp://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 -- Alexandre AMALRIC Ingénieur RD === PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr ___ 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 -- Alexandre AMALRIC Ingénieur RD === PIXXIM S.A. 73E, rue Perrin
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Alex, No it's not free but it's at least much cheaper than Creator. :-) /Andreas On 3 mar 2010 11:50 Alexandre Amalric alex.pix...@gmail.com wrote: Hi Andreas, Have a look at Remo 3D (http://www.remograph.com) which supports removing unused textures in OpenFlight files very easily through scripting. A simple Lua script would let you remove unused textures in a large number of files. I just tested Remo3d scripting in Lua, it's very usefull. Unfortunately it isn't free, if we want to save models with more than 100 polygons we have to purchase the product. Hi Jason, I think what Paul meant is that you'd have to modify the plugin to only load the texture when it encounters a reference to it in the traversal of the main document. Currently, it loads the texture palette at the beginning. You'd have to modify it in some way to delay the actual texture load until a primary record references it. I think about this solution since the begining but I'm not sure that those modifications won't bring errors when using the plugin in a normal way. Maybe that the original author from this plugin can tell me if the texture palette record has to be read or not, so we may decide to skip it. 2010/3/3 Trajce (Nick) Nikolov nikolov.tra...@gmail.com I know this command in Creator but we want to automatize the process because we work on hundred of files like this. Building a creator API is maybe a solution but I don't know if there is a function to remove unused texture on a Openflight model. I will look for this. you dont need any api for this. simply download the openflight spec, read the palette record, parse the face record and count the used textures, and clone all the records into new file. Very simple -Nick On Tue, Mar 2, 2010 at 10:07 AM, Alexandre Amalric alex.pix...@gmail.com wrote: Hi Paul, You'd need to modify the OpenFlight plugin to support this. I tried to do this but in the TexturePalette::readRecord function there is no way to know if a texture is used or not by the model. The only parameters we get from a texture (RecordInputStream) are : - the filename - the index - X - Y hi Tomlinsom, Simplest way would be to open up the file in Creator and use the remove unused textures command I know this command in Creator but we want to automatize the process because we work on hundred of files like this. Building a creator API is maybe a solution but I don't know if there is a function to remove unused texture on a Openflight model. I will look for this. Kind regards, 2010/3/2 Tomlinson, Gordon gtomlin...@overwatch.textron.com Simplest way would be to open up the file in Creator and use the remove unused textures command You could also write a simple Creator API app to do this on a list of flight files Another option would be to load the file in to OSG and save out as OSG or IVE file again you could write a simple script to do this for many files Gordon Tomlinson Product Manager 3d Technology Project Wyvern Overwatch(r) An Operating Unit of Textron Systems -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul Martz Sent: Monday, March 01, 2010 10:29 AM To: OpenSceneGraph Users Subject: Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback Alexandre Amalric wrote: Hi osg-users, I have a question concerning the palette texture record. When converting a flt model which texture palette contains useless texture, they are even read. Is there a way to read only used texture. Let's say I have a simple model file using 1 texture but my texture palette in corresponding openflight model contains 100 textures, so 99% are useless but the plugin read them. I know that it is a special case, but when working on Openflight models with Multigen Paradigm it happens a lot. Any suggestion ? You'd need to modify the OpenFlight plugin to support this. -Paul ___ osg-users mailing list osg-users
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Alexandre, On Wed, Mar 3, 2010 at 11:50 AM, Alexandre Amalric alex.pix...@gmail.com wrote: Maybe that the original author from this plugin can tell me if the texture palette record has to be read or not, so we may decide to skip it. I'm the original author of the OpenFlight reader, the write capability was later added by Paul. You have to read the texture palette record but you can delay the loading of textures until they are actually used by a face or mesh. But it would require some modifications to the loader as others have already explained. Having said that, I want to add that OpenFlight is not a runtime format made for fast loading. Also, the OpenFlight loader was not made with fast load times in mind but rather to preserve the structure and information in the flt file. Gordon wrote this on this mailing list a long time ago: The problem with the OpenFlight format along with most other Modeling formats is that they contain a lot of information that the Modeling package contains and needs and has to support a wide range of uses, Packages, 3d API packages etc. But the runtime API typically does not need most of the information So really there is not too much you can do to speed up the reading of an OpenFlight file, there are some things you can do such as combine textures into one texture ( there are tools in Creator to do this etc) etc. but the gain will not be that great. All 3d APIs have there own binary format that is more or less a binary dump of the tree ( yes I know they are more than that), thus the native binary format is always nearly faster than using a native modeling format such as OpenFlight, Geo, 3ds, Max etc.. That's why OSG has IVE, Vega had FST, Vega Prime has VSB, Performer has PFB etc.. So if you want fast loading convert (osgconv) your OpenFlight files to ive or the new binary osg format. Regards, Brede ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Paul, *You'd need to modify the OpenFlight plugin to support this.* I tried to do this but in the TexturePalette::readRecord function there is no way to know if a texture is used or not by the model. The only parameters we get from a texture (RecordInputStream) are : - the filename - the index - X - Y hi Tomlinsom, Simplest way would be to open up the file in Creator and use the remove unused textures command I know this command in Creator but we want to automatize the process because we work on hundred of files like this. Building a creator API is maybe a solution but I don't know if there is a function to remove unused texture on a Openflight model. I will look for this. Kind regards, 2010/3/2 Tomlinson, Gordon gtomlin...@overwatch.textron.com Simplest way would be to open up the file in Creator and use the remove unused textures command You could also write a simple Creator API app to do this on a list of flight files Another option would be to load the file in to OSG and save out as OSG or IVE file again you could write a simple script to do this for many files Gordon Tomlinson Product Manager 3d Technology Project Wyvern Overwatch(r) An Operating Unit of Textron Systems -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul Martz Sent: Monday, March 01, 2010 10:29 AM To: OpenSceneGraph Users Subject: Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback Alexandre Amalric wrote: Hi osg-users, I have a question concerning the palette texture record. When converting a flt model which texture palette contains useless texture, they are even read. Is there a way to read only used texture. Let's say I have a simple model file using 1 texture but my texture palette in corresponding openflight model contains 100 textures, so 99% are useless but the plugin read them. I know that it is a special case, but when working on Openflight models with Multigen Paradigm it happens a lot. Any suggestion ? You'd need to modify the OpenFlight plugin to support this. -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Alexandre AMALRIC Ingénieur RD === PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Alex, Have a look at Remo 3D (www.remograph.com) which supports removing unused textures in OpenFlight files very easily through scripting. A simple Lua script would let you remove unused textures in a large number of files. /Andreas On 2010-03-02 09:07, Alexandre Amalric wrote: Hi Paul, /You'd need to modify the OpenFlight plugin to support this./ I tried to do this but in the TexturePalette::readRecord function there is no way to know if a texture is used or not by the model. The only parameters we get from a texture (RecordInputStream) are : - the filename - the index - X - Y hi Tomlinsom, Simplest way would be to open up the file in Creator and use the remove unused textures command I know this command in Creator but we want to automatize the process because we work on hundred of files like this. Building a creator API is maybe a solution but I don't know if there is a function to remove unused texture on a Openflight model. I will look for this. Kind regards, 2010/3/2 Tomlinson, Gordon gtomlin...@overwatch.textron.com mailto:gtomlin...@overwatch.textron.com Simplest way would be to open up the file in Creator and use the remove unused textures command You could also write a simple Creator API app to do this on a list of flight files Another option would be to load the file in to OSG and save out as OSG or IVE file again you could write a simple script to do this for many files Gordon Tomlinson Product Manager 3d Technology Project Wyvern Overwatch(r) An Operating Unit of Textron Systems -Original Message- From: osg-users-boun...@lists.openscenegraph.org mailto:osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul Martz Sent: Monday, March 01, 2010 10:29 AM To: OpenSceneGraph Users Subject: Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback Alexandre Amalric wrote: Hi osg-users, I have a question concerning the palette texture record. When converting a flt model which texture palette contains useless texture, they are even read. Is there a way to read only used texture. Let's say I have a simple model file using 1 texture but my texture palette in corresponding openflight model contains 100 textures, so 99% are useless but the plugin read them. I know that it is a special case, but when working on Openflight models with Multigen Paradigm it happens a lot. Any suggestion ? You'd need to modify the OpenFlight plugin to support this. -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto:osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or%0Ag ___ osg-users mailing list osg-users@lists.openscenegraph.org mailto:osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Alexandre AMALRIC Ingénieur RD === PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- __ Andreas Ekstrand Remograph Norrbergavägen 58 SE-590 54 Sturefors SWEDEN Web: www.remograph.com E-mail: andreas.ekstr...@remograph.com Phone: +46 708 490 697 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi osg-users, I have a question concerning the palette texture record. When converting a flt model which texture palette contains useless texture, they are even read. Is there a way to read only used texture. Let's say I have a simple model file using 1 texture but my texture palette in corresponding openflight model contains 100 textures, so 99% are useless but the plugin read them. I know that it is a special case, but when working on Openflight models with Multigen Paradigm it happens a lot. Any suggestion ? 2009/9/22 Katharina Plugge katharina.plu...@web.de Hi Robert, thanks for the fast answer. The idea to use a findFileCallback is not bad and I think it would be sufficient for my case. But in my opinion a change in the PlugIn would nevertheless be a better solution. Using a FindFileCallback does not allow for the differentiation if the file was intended to be read or if this is only a general check. (Is it garanteed that PlugIns doesnt use findFile to check some unrelevant/optional files or the like?) Furthermore using a findFileCallback implies an additional check on the file extension to find out, if its an image file. Cheers, Katharina -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17553#17553 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Alexandre AMALRIC Ingénieur RD === PIXXIM S.A. 73E, rue Perrin-Solliers 13006 Marseille http://www.pixxim.fr ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Alexandre Amalric wrote: Hi osg-users, I have a question concerning the palette texture record. When converting a flt model which texture palette contains useless texture, they are even read. Is there a way to read only used texture. Let's say I have a simple model file using 1 texture but my texture palette in corresponding openflight model contains 100 textures, so 99% are useless but the plugin read them. I know that it is a special case, but when working on Openflight models with Multigen Paradigm it happens a lot. Any suggestion ? You'd need to modify the OpenFlight plugin to support this. -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Simplest way would be to open up the file in Creator and use the remove unused textures command You could also write a simple Creator API app to do this on a list of flight files Another option would be to load the file in to OSG and save out as OSG or IVE file again you could write a simple script to do this for many files Gordon Tomlinson Product Manager 3d Technology Project Wyvern Overwatch(r) An Operating Unit of Textron Systems -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul Martz Sent: Monday, March 01, 2010 10:29 AM To: OpenSceneGraph Users Subject: Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback Alexandre Amalric wrote: Hi osg-users, I have a question concerning the palette texture record. When converting a flt model which texture palette contains useless texture, they are even read. Is there a way to read only used texture. Let's say I have a simple model file using 1 texture but my texture palette in corresponding openflight model contains 100 textures, so 99% are useless but the plugin read them. I know that it is a special case, but when working on Openflight models with Multigen Paradigm it happens a lot. Any suggestion ? You'd need to modify the OpenFlight plugin to support this. -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hi Robert, thanks for the fast answer. The idea to use a findFileCallback is not bad and I think it would be sufficient for my case. But in my opinion a change in the PlugIn would nevertheless be a better solution. Using a FindFileCallback does not allow for the differentiation if the file was intended to be read or if this is only a general check. (Is it garanteed that PlugIns doesnt use findFile to check some unrelevant/optional files or the like?) Furthermore using a findFileCallback implies an additional check on the file extension to find out, if its an image file. Cheers, Katharina -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=17553#17553 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
Hello,
the OpenFlight-Plugin prevents reacting on missing Textures via a
ReadFileCallback, because osgDB::readRefImageFile (called by function
readTexture) is not called if the file does not exist. Would be great if this
could be changed.
A fix could look like this (file PaletteRecords.cpp, line 436):
Code:
virtual void readRecord(RecordInputStream in, Document document)
{
if (document.getTexturePoolParent())
// Using parent's texture pool -- ignore this record.
return;
int maxLength = (document.version() VERSION_14) ? 80 : 200;
std::string filename = in.readString(maxLength);
int32 index = in.readInt32(-1);
/*int32 x =*/ in.readInt32();
/*int32 y =*/ in.readInt32();
osg::StateSet* stateset = NULL;
// Need full path for unique key in local texture cache.
std::string pathname =
osgDB::findDataFile(filename,document.getOptions());
if (pathname.empty())
{
// allow the aplication to react on missing texture via
ReadFileCallback
stateset = readTexture(filename,document);
if( !stateset)
{
osg::notify(osg::WARN) Can't find texture ( index )
filename std::endl;
return;
}
}
else
{
// Is texture in local cache?
osg::StateSet* stateset =
flt::Registry::instance()-getTextureFromLocalCache(pathname);
}
// Read file if not in cache.
if (!stateset)
{
stateset = readTexture(pathname,document);
// Add to texture cache.
flt::Registry::instance()-addTextureToLocalCache(pathname,stateset);
}
// Add to texture pool.
TexturePool* tp = document.getOrCreateTexturePool();
(*tp)[index] = stateset;
}
Thank you!
Greetings,
Katharina[/code]
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Re: [osg-users] [osgPlugins] OpenFlight - Palette Records prevent using of ReaderWriter Callback
HI Katharina,
In the svn/trunk version of the OSG I added support for overriding the
find file operation using an osgDB::FindFileCallback, that you attach
to the osgDB::Registry or an osgDB::Options object. Perhaps this
would be the best way for you to intercept and do something special
when texture files are not found.
Cheers,
Robert.
On Mon, Sep 21, 2009 at 1:49 PM, Katharina Plugge
katharina.plu...@web.de wrote:
Hello,
the OpenFlight-Plugin prevents reacting on missing Textures via a
ReadFileCallback, because osgDB::readRefImageFile (called by function
readTexture) is not called if the file does not exist. Would be great if this
could be changed.
A fix could look like this (file PaletteRecords.cpp, line 436):
Code:
virtual void readRecord(RecordInputStream in, Document document)
{
if (document.getTexturePoolParent())
// Using parent's texture pool -- ignore this record.
return;
int maxLength = (document.version() VERSION_14) ? 80 : 200;
std::string filename = in.readString(maxLength);
int32 index = in.readInt32(-1);
/*int32 x =*/ in.readInt32();
/*int32 y =*/ in.readInt32();
osg::StateSet* stateset = NULL;
// Need full path for unique key in local texture cache.
std::string pathname =
osgDB::findDataFile(filename,document.getOptions());
if (pathname.empty())
{
// allow the aplication to react on missing texture via
ReadFileCallback
stateset = readTexture(filename,document);
if( !stateset)
{
osg::notify(osg::WARN) Can't find texture ( index
) filename std::endl;
return;
}
}
else
{
// Is texture in local cache?
osg::StateSet* stateset =
flt::Registry::instance()-getTextureFromLocalCache(pathname);
}
// Read file if not in cache.
if (!stateset)
{
stateset = readTexture(pathname,document);
// Add to texture cache.
flt::Registry::instance()-addTextureToLocalCache(pathname,stateset);
}
// Add to texture pool.
TexturePool* tp = document.getOrCreateTexturePool();
(*tp)[index] = stateset;
}
Thank you!
Greetings,
Katharina[/code]
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