[osg-users] 2D rendering priority...
All, I have a need to render a bunch of 2D geometry groups that have different priorities for display (one group rendered on top of the other according to their priority). I also need to have the ability to turn the rendering off and on for some of the groups while maintaining rendering priority. I wanted some input or ideas on what might be the best way to handle this in OSG. So far I've looked at the RenderBin mechanism for possible priority rendering and the setNodeMask for turning rendering on and off. I'm not sure this is the most elegant way to accomplish what I need to do. Any input or suggestions would be appreciated. Thanks, -Shayne smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] 2D rendering priority...
Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC wrote: I have a need to render a bunch of 2D geometry groups that have different priorities for display (one group rendered on top of the other according to their priority). I also need to have the ability to turn the rendering off and on for some of the groups while maintaining rendering priority. How many different groups do you have, and what is the total data size of all the groups? I wanted some input or ideas on what might be the best way to handle this in OSG. So far I’ve looked at the RenderBin mechanism for possible priority rendering and the setNodeMask for turning rendering on and off. I’m not sure this is the most elegant way to accomplish what I need to do. In addition to setting the RenderBin, you'd need to disable depth test to get the painter's algorithm to work properly, of course. The RenderBin and NodeMask mechanisms seem like they're designed for just the tasks you describe. Can you elaborate on why you have reservations about their suitability? -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] 2D rendering priority...
Paul, Thanks for the reply. We can have up to 57 levels of priority where each level could have 100-200 simple geometries (i.e. circles, squares, simple line primitives, etc.). It's very rare that all levels are on simultaneously but those that are on, need to stack in priority relative to every other level/group that is on. Realistically, we'll have around 10-15 levels being rendered at the same time. Hopefully this quantity/complexity won't present a problem. I really didn't have any reservations per se about using the RenderBin and NodeMask mechanisms. I suspected that I needed to use them but I wanted to ping the group just to make sure I was on the right track. When using OSG, it's always good to have a reality check before proceeding...:) -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul Martz Sent: Tuesday, February 09, 2010 4:07 PM To: OpenSceneGraph Users Subject: Re: [osg-users] 2D rendering priority... Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC wrote: > I have a need to render a bunch of 2D geometry groups that have > different priorities for display (one group rendered on top of the other > according to their priority). I also need to have the ability to turn > the rendering off and on for some of the groups while maintaining > rendering priority. How many different groups do you have, and what is the total data size of all the groups? > I wanted some input or ideas on what might be the best way to handle > this in OSG. So far I've looked at the RenderBin mechanism for possible > priority rendering and the setNodeMask for turning rendering on and off. > I'm not sure this is the most elegant way to accomplish what I need to do. In addition to setting the RenderBin, you'd need to disable depth test to get the painter's algorithm to work properly, of course. The RenderBin and NodeMask mechanisms seem like they're designed for just the tasks you describe. Can you elaborate on why you have reservations about their suitability? -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] 2D rendering priority...
On 2/9/2010 5:18 PM, Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC wrote: > Thanks for the reply. We can have up to 57 levels of priority where each > level could have 100-200 simple geometries (i.e. circles, squares, simple > line primitives, etc.). It's very rare that all levels are on simultaneously > but those that are on, need to stack in priority relative to every other > level/group that is on. Realistically, we'll have around 10-15 levels being > rendered at the same time. Hopefully this quantity/complexity won't present > a problem. > > I really didn't have any reservations per se about using the RenderBin and > NodeMask mechanisms. I suspected that I needed to use them but I wanted to > ping the group just to make sure I was on the right track. When using OSG, > it's always good to have a reality check before proceeding...:) Why wouldn't you use Z write/test on, Z translation and switch nodes to control all that? You could have a near-limitless (well, within Z precision) number of layers. > -Shayne -- Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaPixel.com PixelSense Landsat processing now available! http://www.alphapixel.com/demos/ "There is no Truth. There is only Perception. To Perceive is to Exist." - Xen ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] 2D rendering priority...
Hi, I use a RenderBin / NodeMask combination to exactly this and it works well. I can elaborate more if you wish. Cheers, Brad -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Tueller,Shayne R Civ USAF AFMC 519 SMXS/MXDEC Sent: Wednesday, 10 February 2010 8:18 AM To: OpenSceneGraph Users Subject: Re: [osg-users] 2D rendering priority... Paul, Thanks for the reply. We can have up to 57 levels of priority where each level could have 100-200 simple geometries (i.e. circles, squares, simple line primitives, etc.). It's very rare that all levels are on simultaneously but those that are on, need to stack in priority relative to every other level/group that is on. Realistically, we'll have around 10-15 levels being rendered at the same time. Hopefully this quantity/complexity won't present a problem. I really didn't have any reservations per se about using the RenderBin and NodeMask mechanisms. I suspected that I needed to use them but I wanted to ping the group just to make sure I was on the right track. When using OSG, it's always good to have a reality check before proceeding...:) -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul Martz Sent: Tuesday, February 09, 2010 4:07 PM To: OpenSceneGraph Users Subject: Re: [osg-users] 2D rendering priority... Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC wrote: > I have a need to render a bunch of 2D geometry groups that have > different priorities for display (one group rendered on top of the > other according to their priority). I also need to have the ability to > turn the rendering off and on for some of the groups while maintaining > rendering priority. How many different groups do you have, and what is the total data size of all the groups? > I wanted some input or ideas on what might be the best way to handle > this in OSG. So far I've looked at the RenderBin mechanism for > possible priority rendering and the setNodeMask for turning rendering on and off. > I'm not sure this is the most elegant way to accomplish what I need to do. In addition to setting the RenderBin, you'd need to disable depth test to get the painter's algorithm to work properly, of course. The RenderBin and NodeMask mechanisms seem like they're designed for just the tasks you describe. Can you elaborate on why you have reservations about their suitability? -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g DISCLAIMER:--- This e-mail transmission and any documents, files and previous e-mail messages attached to it are private and confidential. They may contain proprietary or copyright material or information that is subject to legal professional privilege. They are for the use of the intended recipient only. Any unauthorised viewing, use, disclosure, copying, alteration, storage or distribution of, or reliance on, this message is strictly prohibited. No part may be reproduced, adapted or transmitted without the written permission of the owner. If you have received this transmission in error, or are not an authorised recipient, please immediately notify the sender by return email, delete this message and all copies from your e-mail system, and destroy any printed copies. Receipt by anyone other than the intended recipient should not be deemed a waiver of any privilege or protection. Thales Australia does not warrant or represent that this e-mail or any documents, files and previous e-mail messages attached are error or virus free. -- ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] 2D rendering priority...
Hi Shayne, In the svn/trunk + 2.9.x series there is support for ordering the objects in traversal order, just select the "TRAVERSAL_ORDER" bin name when setting up the RenderBin details on the StateSet's associated with the subgraph. Robert. On Tue, Feb 9, 2010 at 10:53 PM, Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC wrote: > All, > > > > I have a need to render a bunch of 2D geometry groups that have different > priorities for display (one group rendered on top of the other according to > their priority). I also need to have the ability to turn the rendering off > and on for some of the groups while maintaining rendering priority. > > > > I wanted some input or ideas on what might be the best way to handle this in > OSG. So far I’ve looked at the RenderBin mechanism for possible priority > rendering and the setNodeMask for turning rendering on and off. I’m not sure > this is the most elegant way to accomplish what I need to do. > > > > Any input or suggestions would be appreciated… > > > > Thanks, > > -Shayne > > ___ > 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] 2D rendering priority...
Brad, Please elaborate...:) I have not played with RenderBin so any code snippets/examples would be appreciated. Thanks, -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Christiansen, Brad Sent: Wednesday, February 10, 2010 12:06 AM To: OpenSceneGraph Users Subject: Re: [osg-users] 2D rendering priority... Hi, I use a RenderBin / NodeMask combination to exactly this and it works well. I can elaborate more if you wish. Cheers, Brad -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Tueller,Shayne R Civ USAF AFMC 519 SMXS/MXDEC Sent: Wednesday, 10 February 2010 8:18 AM To: OpenSceneGraph Users Subject: Re: [osg-users] 2D rendering priority... Paul, Thanks for the reply. We can have up to 57 levels of priority where each level could have 100-200 simple geometries (i.e. circles, squares, simple line primitives, etc.). It's very rare that all levels are on simultaneously but those that are on, need to stack in priority relative to every other level/group that is on. Realistically, we'll have around 10-15 levels being rendered at the same time. Hopefully this quantity/complexity won't present a problem. I really didn't have any reservations per se about using the RenderBin and NodeMask mechanisms. I suspected that I needed to use them but I wanted to ping the group just to make sure I was on the right track. When using OSG, it's always good to have a reality check before proceeding...:) -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul Martz Sent: Tuesday, February 09, 2010 4:07 PM To: OpenSceneGraph Users Subject: Re: [osg-users] 2D rendering priority... Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC wrote: > I have a need to render a bunch of 2D geometry groups that have > different priorities for display (one group rendered on top of the > other according to their priority). I also need to have the ability to > turn the rendering off and on for some of the groups while maintaining > rendering priority. How many different groups do you have, and what is the total data size of all the groups? > I wanted some input or ideas on what might be the best way to handle > this in OSG. So far I've looked at the RenderBin mechanism for > possible priority rendering and the setNodeMask for turning rendering on and off. > I'm not sure this is the most elegant way to accomplish what I need to do. In addition to setting the RenderBin, you'd need to disable depth test to get the painter's algorithm to work properly, of course. The RenderBin and NodeMask mechanisms seem like they're designed for just the tasks you describe. Can you elaborate on why you have reservations about their suitability? -Paul ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g DISCLAIMER:- -- This e-mail transmission and any documents, files and previous e-mail messages attached to it are private and confidential. They may contain proprietary or copyright material or information that is subject to legal professional privilege. They are for the use of the intended recipient only. Any unauthorised viewing, use, disclosure, copying, alteration, storage or distribution of, or reliance on, this message is strictly prohibited. No part may be reproduced, adapted or transmitted without the written permission of the owner. If you have received this transmission in error, or are not an authorised recipient, please immediately notify the sender by return email, delete this message and all copies from your e-mail system, and destroy any printed copies. Receipt by anyone other than the intended recipient should not be deemed a waiver of any privilege or protection. Thales Australia does not warrant or represent that this e-mail or any documents, files and previous e-mail messages attached are error or virus free. -- ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org smime.p7s Description: S/MIME cryptographic signature ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] 2D rendering priority...
Hi,
We used this approach for rendering a 2D scene using the painters
algorithm (i.e. render back to front according to our own order
definition). I have included the most relevent code snippets. No
comments on their quality please ; ).
1) Added a 'user data' object (which contains the rendering priority) to
each of our leaves.
2) As required, we run a 'RenderPriorityVisitor' over the scene to set
the correct priorities into our user data objects.
3) Create a custom render bin and setup your 2D graph to use it:
e.g. root2DstateSet->setRenderBinDetails(0, RenderBin2D::BIN_NAME,
osg::StateSet::OVERRIDE_RENDERBIN_DETAILS);
We use OVERRIDE_RENDERBIN_DETAILS as some of the objects bellow the root
of our 2D scene are also rendered in 3D, in which case they may already
have different bin details set (e.g transparent bin).
The key bit of the custom bin is setting the sort callback. This
callback sorts the leaves based on the priority set in the 'user data'
object.
Hopefully this all makes sence. I implemented this code ~7 years ago so
there may be a neater way to do this now, but it is still working well
against the latest OSG releases.
Cheers,
Brad
Code snippets:
Custom Render Bin
/** Automatically registers the bin prototype. */
static osgUtil::RegisterRenderBinProxy
s_registerBin(RenderBin2D::BIN_NAME,new RenderBin2D());
RenderBin2D() { //extends RenderBin
setSortCallback(new SortCallback2D());
}
SortCallback2D
void SortCallback2D::sortImplementation(osgUtil::RenderBin* renderBin) {
renderBin->copyLeavesFromStateGraphListToRenderLeafList();
std::sort(renderBin->getRenderLeafList().begin(),renderBin->getRenderLea
fList().end(),RenderPrioritySortFunctor());
}
--- RenderPrioritySortFunctor
int RenderPrioritySortFunctor::getRenderOrder(const osgUtil::RenderLeaf*
leaf) const {
const osg::Referenced* ud = leaf->getDrawable()->getUserData();
if(ud) {
const DrawableData* data = dynamic_cast(ud);
return data->getRenderOrder();
}
return 0;
}
bool RenderPrioritySortFunctor::operator() (const osg::Node* lhs,const
osg::Node* rhs) const {
int leftOrder = getRenderOrder(lhs);
int rightOrder = getRenderOrder(rhs);
if(m_sortMode == SORT_ASCENDING) {
return leftOrder < rightOrder;
} else { //sort descending
return leftOrder > rightOrder;
}
}
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of
Tueller,Shayne R Civ USAF AFMC 519 SMXS/MXDEC
Sent: Wednesday, 10 February 2010 11:49 PM
To: OpenSceneGraph Users
Subject: Re: [osg-users] 2D rendering priority...
Brad,
Please elaborate...:)
I have not played with RenderBin so any code snippets/examples would be
appreciated.
Thanks,
-Shayne
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of
Christiansen, Brad
Sent: Wednesday, February 10, 2010 12:06 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] 2D rendering priority...
Hi,
I use a RenderBin / NodeMask combination to exactly this and it works
well. I can elaborate more if you wish.
Cheers,
Brad
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of
Tueller,Shayne R Civ USAF AFMC 519 SMXS/MXDEC
Sent: Wednesday, 10 February 2010 8:18 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] 2D rendering priority...
Paul,
Thanks for the reply. We can have up to 57 levels of priority where each
level could have 100-200 simple geometries (i.e. circles, squares,
simple line primitives, etc.). It's very rare that all levels are on
simultaneously but those that are on, need to stack in priority relative
to every other level/group that is on. Realistically, we'll have around
10-15 levels being rendered at the same time. Hopefully this
quantity/complexity won't present a problem.
I really didn't have any reservations per se about using the RenderBin
and NodeMask mechanisms. I suspected that I needed to use them but I
wanted to ping the group just to make sure I was on the right track.
When using OSG, it's always good to have a reality check before
proceeding...:)
-Shayne
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul
Martz
Sent: Tuesday, February 09, 2010 4:07 PM
To: OpenSceneGraph Users
Subject: Re: [osg-users] 2D rendering priority...
Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC wrote:
> I have a need to render a bunch of 2D geometry groups that have
> different priorities for display (one group rendered on top of the
> other according to their priority). I also need to have the ability to
> turn the rendering off and on for some of the groups while ma
Re: [osg-users] 2D rendering priority...
Brad,
I'll look over your implementation. Thanks for sharing this...:)
-Shayne
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of
Christiansen, Brad
Sent: Thursday, February 11, 2010 2:35 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] 2D rendering priority...
Hi,
We used this approach for rendering a 2D scene using the painters
algorithm (i.e. render back to front according to our own order
definition). I have included the most relevent code snippets. No
comments on their quality please ; ).
1) Added a 'user data' object (which contains the rendering priority) to
each of our leaves.
2) As required, we run a 'RenderPriorityVisitor' over the scene to set
the correct priorities into our user data objects.
3) Create a custom render bin and setup your 2D graph to use it:
e.g. root2DstateSet->setRenderBinDetails(0, RenderBin2D::BIN_NAME,
osg::StateSet::OVERRIDE_RENDERBIN_DETAILS);
We use OVERRIDE_RENDERBIN_DETAILS as some of the objects bellow the root
of our 2D scene are also rendered in 3D, in which case they may already
have different bin details set (e.g transparent bin).
The key bit of the custom bin is setting the sort callback. This
callback sorts the leaves based on the priority set in the 'user data'
object.
Hopefully this all makes sence. I implemented this code ~7 years ago so
there may be a neater way to do this now, but it is still working well
against the latest OSG releases.
Cheers,
Brad
Code snippets:
Custom Render Bin
/** Automatically registers the bin prototype. */
static osgUtil::RegisterRenderBinProxy
s_registerBin(RenderBin2D::BIN_NAME,new RenderBin2D());
RenderBin2D() { //extends RenderBin
setSortCallback(new SortCallback2D());
}
SortCallback2D
void SortCallback2D::sortImplementation(osgUtil::RenderBin* renderBin) {
renderBin->copyLeavesFromStateGraphListToRenderLeafList();
std::sort(renderBin->getRenderLeafList().begin(),renderBin->getRenderLea
fList().end(),RenderPrioritySortFunctor());
}
--- RenderPrioritySortFunctor
int RenderPrioritySortFunctor::getRenderOrder(const osgUtil::RenderLeaf*
leaf) const {
const osg::Referenced* ud = leaf->getDrawable()->getUserData();
if(ud) {
const DrawableData* data = dynamic_cast(ud);
return data->getRenderOrder();
}
return 0;
}
bool RenderPrioritySortFunctor::operator() (const osg::Node* lhs,const
osg::Node* rhs) const {
int leftOrder = getRenderOrder(lhs);
int rightOrder = getRenderOrder(rhs);
if(m_sortMode == SORT_ASCENDING) {
return leftOrder < rightOrder;
} else { //sort descending
return leftOrder > rightOrder;
}
}
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of
Tueller,Shayne R Civ USAF AFMC 519 SMXS/MXDEC
Sent: Wednesday, 10 February 2010 11:49 PM
To: OpenSceneGraph Users
Subject: Re: [osg-users] 2D rendering priority...
Brad,
Please elaborate...:)
I have not played with RenderBin so any code snippets/examples would be
appreciated.
Thanks,
-Shayne
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of
Christiansen, Brad
Sent: Wednesday, February 10, 2010 12:06 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] 2D rendering priority...
Hi,
I use a RenderBin / NodeMask combination to exactly this and it works
well. I can elaborate more if you wish.
Cheers,
Brad
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of
Tueller,Shayne R Civ USAF AFMC 519 SMXS/MXDEC
Sent: Wednesday, 10 February 2010 8:18 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] 2D rendering priority...
Paul,
Thanks for the reply. We can have up to 57 levels of priority where each
level could have 100-200 simple geometries (i.e. circles, squares,
simple line primitives, etc.). It's very rare that all levels are on
simultaneously but those that are on, need to stack in priority relative
to every other level/group that is on. Realistically, we'll have around
10-15 levels being rendered at the same time. Hopefully this
quantity/complexity won't present a problem.
I really didn't have any reservations per se about using the RenderBin
and NodeMask mechanisms. I suspected that I needed to use them but I
wanted to ping the group just to make sure I was on the right track.
When using OSG, it's always good to have a reality check before
proceeding...:)
-Shayne
-Original Message-
From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Paul
Martz
Sent: Tuesday, February 09, 2010 4:07 PM
To: OpenSceneGraph Users
Subject: Re: [osg-users] 2
