Category: Content Creation User Group

On Monday, December 5th, Linden Lab announced that Project Bento is now “live” on the main grid following the promotion of the Bento Release Candidate viewer to de facto release status.

Project Bento is – as I’m sure everyone is only too aware – the project to enhance the avatar skeleton for use in mesh models, human and non-human (please note the new bones cannot be used with the system avatar).

It’s a project I’ve covered extensively in this blog, having been a part of both the closed and open beta phases of the work. However, just in case you have missed it. Bento adds a range of new bones the Second Life avatar skeleton, all of which can be rigged and weighted in mesh avatar models, and many can be used for a wide variety of purposes: limbs, wings, ears, tails and more. In particular, Bento adds over 30 bones to the avatar’s hands and avatar’s face, allowing mesh creators to design hands with movable fingers and faces which can be far more expressive. The Lab’s promotional video released as Bento entered a main grid beta phase is embedded below.

As many of the bones are tied to the Second Life appearance sliders, it also means that – subject to caveats from individual creators – avatar meshes can be customised easier by users. So, for example, avatar heads can be tweaked to give a more personal look when compared to the “off-the-shelf” version of the same head.

For non-human avatars, Bento brings a host of new possibilities and easier ways of doing things. Animal and humanoid avatars can be made which are more life-like, make better use of resources and offer fascinating new opportunities for wearable avatars, pets and more.

To aid in Bento content creation, the project has heavily engaged the talents of Cathy Foil and the Machninimatix team to ensure that MayaStar, Cathy’s SL plug-in for Maya, and Avastar, the Blender add-on from Gaia and Matrice are fully Bento compliant – and all three have been instrumental in moving Bento forward.

There are a couple of additional options which are included in the viewer called Reset Skeleton and Reset Skeleton And Animations, and can be found on the right-click avatar context menu. They have been included because sometimes, when changing between one mesh avatar and another, the basic SL avatar can become deformed, resulting in it looking squished, stretched, caught between two looks, or something else.

The problem is generally the result of race conditions when the avatar’s appearance is being updated, and both of these buttons are intended to correct the problem  – the option to reset animations as well is intended to fix deformations which may be due to animations also kicking-in incorrectly / at the wrong time.

An important thing to not with both these option is they only fix the avatar in question (your own or someone else in your view. They do not affect how other people are seeing the same avatar.

As stated above, content creators have been engaged in the project, and so some Bento content is already available in-world and via the SL Marketplace – and doubtless more will be appearing in time. However, you do need a Bento capable viewer to render Bento content correctly. Hopefully, it will not be long before TPVs also release Bento capable updates as well (some already have Bento updates available as experimental versions, or undergoing closed user group testing).

In the meantime, I’ll leave you with a list of additional Bento and related resources and information.

Additional Bento Links

• SL Viewer download page
• Project Bento testing page (wiki)
• Avatar body size (wiki)
• Bento Skeleton Guide (wiki)
• Project Bento user group page
• Project Bento discussion forum
• Project Bento coverage in this blog (including weekly user group meeting updates)

The following notes and audio were taken from the weekly Bento User Group meeting, held on Thursday, November 17th at 13:00 SLT at the the Hippotropolis Campfire Circle. and chaired by Vir Linden. For details on the meeting agenda, please refer to the Bento User Group wiki page.

Bento Viewer

The Bento viewer RC updated on Tuesday, November 15th to version 5.0.0.321598. This build has fixes for the following (non-public) JIRA issues:

• SL-524 – Reset Skeleton does not restore collision volume joint positions
• MAINT-6913 – Problem with alpha on some Nvidia Mac systems when shadows are enabled
• MAINT-6915 – Reset Skeleton is not enough to remove all traces of a previous Bento avatar.

To handle the last point, the Lab has added a Reset Skeleton And Animations option to the right-click menu (shown on the right).

However, as the problem can occur intermittently, it is still not guaranteed the additional option will handle those situations where an avatar isn’t fully reset using Reset Skeleton. Wider testing will hopefully uncover any remaining corner cases where this is the case – Firestorm hope to have a build available for testing with these updates fairly soon.

The “Viagra Bug” and Further Viewer RC Updates / Viewer Release

It is likely there will be one further RC update before the viewer is promoted to the de facto release viewer, courtesy of a new bug which has cropped up recently which results in a *cough* “ever-growing groin bone”, aka the Viagra Bug”. This is related to the addition of the groin slider,

Providing nothing else of significance is found, it is hoped that the next RC will be the version of the viewer which will be the one that will get duly promoted to release status. Given week #47 is Thanksgiving, it would seem likely this won’t be before week #48 (week commencing Monday, November 28th). The only other caveat to this would be an unexpected and particularly nasty bug showing up.

Best Practices and “How To” Guidance

Bento is going to bring with it a lot of questions from both creators and consumers. To help advise / educate people, The Lab is considering putting together a series of video and / or a set of “best practices” pages on the wiki – with a lean more likely towards the latter.

The general idea would be to showcase the work of individual creators, including their own guidance and advice (e.g. advice they have perhaps previously supplied, and now buried in, the 130+ pages of the Bento forum thread), and links to any videos, advisory web pages, etc., they have created (such as this series on Bento horse avatars, by Teager), so that creators and consumers can be better informed of Bento’s capabilities and opportunities. These best practices pages could include a biography of the creator providing their time / ideas / tutorials, while official videos – if the Lab go that route – could also showcase their work, discuss Bento with them etc.

Bento creators interested in helping the Lab in developing ideas and information along these lines are asked to contract Troy Linden directly (troy-at-lindenlab.com).

Other Items

Future Considerations

Its been suggested that having a “reset all skeletons” option might be an option for the future, rather than having to right-click individually on avatars which may be deformed and then correct them in your view – particularly as the Reset Skeleton options might be buried in the pie menu for those still using it.

Such an option would “fix” multiple deformed avatars (which might be the case when teleporting into an area with a lot of avatars), but it also might cause avatars which were not deformed in a person’s view to deform, possibly with no means to fix without a relog on the part of the person seeing them deformed. However, it is an idea the Lab is willing to consider for the future, if submitted as a feature request.

Similarly, the option to have unweighted (but referenced) bones be removed from the max bone count in a mesh (e.g so volume bones no longer count towards the available allocation) is being looked at as a possible follow-on update to the project.

Next Bento Meeting

Due to Thanksgiving in the United States, followed by a possible internal meeting at the Lab the week after, the next Bento meeting – subject to confirmation on dates in the user group wiki page – may not be until Thursday, December 8th.

Post Release Bento User Group

Thought is being given to continuing the user group meetings once the viewer has reached release status, initially as Bento meetings, where people can come and seek information, and then possibly but broadening into a (avatar focused?) content creators’ meeting, if there is a demand.

Additional Bento Links

• Project Bento testing page (wiki)
• Avatar body size (wiki)
• Bento Skeleton Guide (wiki)
• Project Bento user group page
• Project Bento discussion forum
• Project Bento coverage in this blog (including weekly user group meeting updates)

The following notes and audio were taken from the weekly Bento User Group meeting, held on Thursday, October 27th at 13:00 SLT at the the Hippotropolis Campfire Circle. and chaired by Vir Linden. For details on the meeting agenda, please refer to the Bento User Group wiki page.

Note that this update is not intended to offer a full transcript of the meeting, nor does it present the discussion points in chronological order. Rather, it represents the core points of discussion, grouped together by subject matter were relevant / possible, whilst maintaining the overall context of the meeting.

General Project Status

Work continues on Bento bug fixes. As a result of the Bento code being available in a pre-release version of Firestorm, the number of reported issues with legacy content have increased (see BUG-40672). There are two issue in particular the Lab have been looking at:

• The previously reported issues of some mesh content having latent “bad” joint positions which were previously overlooked by the viewer, but which are now taken into account under Bento, leading to avatar deformation (see my update #30 for more on this)
• An issue related to the eye joints now being scaled by the eye size slider, which can result in existing mesh eyes appearing to bug out of avatar’s heads when viewed in the Bento viewer. The easiest way to fix this is to reset the eye slider to the default 50 value.

Outside of these problems – which are still being looked at (see below), there is at least one bug (initially noted with Haste Coy products and also reported on BUG-40672), which should have a fix in the next Bento RC update, and a crash issue which also should be fixed in the next update.

If anyone is encountering issues with existing content when using the Bento viewer, they should report their problems via the JIRA (BUG-40672) so the Lab can look at things.

Legacy Content Deformation Issue

There has still been no decision on how to handle the “werewolf deformation” issue, which now extends to about three creators, and may extend beyond werewolf models. There have been suggestions on forking rendering behaviour by something like upload date, so that if an item was uploaded prior to date X, then it is handled as “non-Bento”; if uploaded after date X, it is handled with Bento in mind.

A problem here is setting an arbitrary date may not actually solve anything. Bento has been around for over a year, with content creators working on it for the last several months at least, during which time other creators have been creating / updating and uploading non-Bento content. So, determining which is which by date likely won’t work.

That said, if there is a large amount of legacy content impacted by the viewer change, it still might be preferable to set a date and have Bento content creators re-upload their work to be on the “right side” of that date, rather than trying to get legacy content creators to re-upload. This is because some creators may not already be around and / or some may have used mesh creation kits which don’t have the necessary .DAE file for them to modify.

A further complication here is that any impact of the viewer behaviour change may simply be negated by creators of older avatar models updating to Bento models, to which their customers subsequently update.

Other Items

No Modify Shapes

The eye issue mentioned above once again raised concerns around users employing shapes that do not have modify permissions. Such shapes prevent the use of the appearance sliders, so even apparently “easy fix” issues, such as adjusting the eye size slider, may not be applicable.

This particular issue sparked a lengthy conversation about using the (currently non-obvious in the official viewer) XML shape exporter coupled with additional code to more easily export a shape’s XML file, which could then be re-imported with a check box to ensure the default 50 setting for things like the eye size sliders.

One problem here, as Vir pointed out is that users who are unaware of unfamiliar with using the shape sliders likely aren’t going to be enamoured with the idea of exporting an appearance XML file, creating a shape and then importing the appearance XML data against that shape, even though some TPVs have, with the Lab’s approval, sought to make this easier.

There is also the problem that creators may object to users being given the ability to export / import shape data, as it effectively bypasses the permissions system, allowing anyone to take shape data and use it as they please. However, given there is already a TPV methodology available, to assist with shape data import which has been given the nod by the Lab,  Vir will take the matter back to the office for further discussion.

The more direct solution might be for creators to indicate that Bento avatar meshes require the use of a modifiable shape (either supplied with the mesh or which the user can create and edit).

The Skeleton

Vir highlighted the fact that while different terms are used, there are technically three types of joints in the avatar skeleton: bones, the “standard joints” for rigging to; collision volumes, as used by things like fitted mesh; and attachment points,  which have most of the properties of joints, hence why some creators started rigging and animating to them, even though this was never an intended use.

Next Meeting

The next Bento meeting will likely be Thursday, November 10th, 2016, as November 3rd clashes with the Lab’s monthly internal meeting.

Additional Links

• Project Bento testing page (wiki)
• Avatar body size (wiki)
• Bento Skeleton Guide (wiki)
• Project Bento user group page
• Project Bento discussion forum
• Project Bento coverage in this blog (including weekly user group meeting updates)

The following notes and audio were taken from the weekly Bento User Group meeting, held on Thursday, October 20th at 13:00 SLT at the the Hippotropolis Campfire Circle. and chaired by Vir Linden. For details on the meeting agenda, please refer to the Bento User Group wiki page.

Note that this update is not intended to offer a full transcript of the meeting, nor does it present the discussion points in chronological order. Rather, it represents the core points of discussion, grouped together by subject matter were relevant / possible, whilst maintaining the overall context of the meeting.

Bento Viewer Status

The 4th iteration of the Bento RC viewer appeared on Thursday, October 20th, ahead of the meeting. Version 5.0.0.320815 is primarily an update to keep the viewer on a par with the release viewer code (VLC Media plug-in for Windows), although it does include a rendering bug fix.

The fix including in the new RC version is for some existing Haste Coy assets, which were  reported on BUG-40672 (the deformed werewolf issue noted in my previous Bento update).

There has been no decision on what to do about the werewolf deformation issue itself (the result of a change in viewer behaviour – see my previous update, linked to above). It’s not clear how widespread this issue is – at the moment it appears to be somewhat limited. The problem here is whether the viewer behaviour is maintained for Bento or rolled back to how it was, it will mean some content will have to be re-worked and re-uploaded. Thus, a deciding factor for the Lab in determining what to do will be discovering exactly how much existing content is actually impacted.

The focus is now on bug fixing with the viewer. There is no date being considered for promoting Bento to release status; as previously indications, this will depend on bugs and fixes, the viewer’s crash rate, and the relative priority it has when compared with other viewers in the release channel (there being only one at the time from writing).

Reported Issues

Scale Locking Bug

A bug was reported just prior to the previous Bento meeting about an issue with the new scale locking capability. This allows creators to disable shape sliders from having any influence over joint positions when uploading their models. However, it had been reported as working intermittently,  Vir has developed a fix for this issue, but it will not be available until the next RC update for the viewer.

Skin Weight Viewer Crash

BUG-40725 reports that checking the Skin Weights option when previewing joint positions will crash the viewer (Bento RC 5.0.0.320160). This has yet to be investigated.  This is actually one of two places where skin weights can be checked, the other being in the upload option, so the preview doesn’t have to be used. However, the Lab will be looking into the issue.

Feet Resizing

There was some confusion as to whether feet on models could be resized or not using the sliders. It appears that they can, providing the model is rigged to the L_FOOT and R_FOOT collision volumes for the feet.

MayaStar

Cathy Foil reports that MayaStar has been updated completely to Bento. Those using it should rez their update Checker to get the latest version. Report are that it handles sliders really well. This represents the culmination of several long months of work for Cathy in updating her product to be fully Bento compliant – congratulations to her!

Additional Links

• Project Bento testing page (wiki)
• Avatar body size (wiki)
• Bento Skeleton Guide (wiki)
• Project Bento user group page
• Project Bento discussion forum
• Project Bento coverage in this blog (including weekly user group meeting updates)

The following notes and audio were taken from the weekly Bento User Group meeting, held on Thursday, October 13th at 13:00 SLT at the the Hippotropolis Campfire Circle. and chaired by Vir Linden. For details on the meeting agenda, please refer to the Bento User Group wiki page.

Note that this update is not intended to offer a full transcript of the meeting, nor does it present the discussion points in chronological order. Rather, it represents the core points of discussion, grouped together by subject matter were relevant / possible, whilst maintaining the overall context of the meeting.

RC Viewer

The Bento viewer is now on its third version as a release candidate (version 5.0.0.320160 at the time of writing). It is performing well crash-wise in comparison with the current release viewer, so the hope is – bugs allowing – it might not be too long before the viewer moves up to release status.

The first of the bugs mentioned by Vir in the audio is that the scale locking capability recently added to disable shape sliders from having any influence over joint positions has been reported as working intermittently at times. Vir is still looking into this.

The second is a report instance of pre-Bento content being deformed when viewed on the Bento viewer – see BUG-40672.

The problem appears when a sub-mesh contains bad joint position overrides for various joints that the model is rigged to. Prior to Bento, these joint position overrides were not applied, because the Lab was enforcing a 20-joint minimum: if a sub-mesh was rigged to fewer than 20 joints, then it was not treated as rigged, and the joint positions were ignored.

For Bento, this restriction has been relaxed to make it easier to produce meshes only affecting part of the avatar (wings affecting wing joints positions, head that affects only head join positions, etc.), making it possible to “mix and match” different meshes. Unfortunately, it also means that any model with “bad” (but previously “invisible”) joint positions defined may now appear deformed.

Reverting the viewer to its previous behaviour is not seen as optimal, because of the potential to break some Bento models and make the extended skeleton less useful (no more mix and match of meshes). Similarly, it is currently unclear as to how much content might be affected if the updated behaviour is retained, so the Lab is still considering what to do.

Makers of pre-Bento mesh avatars are asked to check BUG-40672 and then test their avatars using the current Bento viewer to see if similar issues manifest themselves. The most direct way to “fix” things is for affected content being re-uploaded with the bad joint positions removed, or by adding an animation to fix the joint positions after the fact (assuming said animation doesn’t conflict with others the model is using). Of course, if the model does not require joint positions at all then the option could also simply be unchecked at upload time.

Animating Hands

A complex discussion has been unfolding on the discussion forum concerning animating hands (from around page 122 onwards), and which also encompassed a part of the user group meeting (in text). It’s a convoluted subject involving several elements, of which perhaps the most important thing is understanding how best to animate hands.

To try to address this, Cathy Foil has produced a comprehensive video on hand animations, which anyone developing mesh hands for Bento may find informative and helpful, and so is embedded below.

Cathy also provided some hints and tips during the meeting.

Feet

There has also been forum discussion on feet. Bento doesn’t add and further joints to feet, and there are no plans to change the rig specifically to a support for animating feet. However, as Vir pointed out, there are more joints than the system avatar does not use – mToe and possibly mFoot – which might offer a degree of flexibility for mesh creators. If these are used, a point to keep in mind is that they are not used in the avatar height calculations, so some unexpected results my occur.

Other Items

Bounding Box Clipping / LODs

A non-Bento issue which can be frequently seen at Bento meetings due to the number of meshes being worn is that of bounding box clipping – part of the avatar appears to vanish as a camera is pulled back.

This generally occurs when the viewer is operating at the limit of its imposter avatars setting, and a conflict occurs trying to both display the avatar mesh (which the viewer will try to render at a united LOD (level of detail) whilst also trying to switch to displaying an avatar as an imposter. It can be overcome by setting the imposter slider to No Limit in Preference > Graphics.

While fixing this issue is not part of Bento, it raised the subject of why LODs aren’t used rather than the imposter setting. Vir explained that one reason is this idea that the viewer will try to render avatars and their attachments at a high LOD, rather than stepping down through LOD models, as is the case with in-world mesh objects. Another isse us that many creators tend to only use high LOD models, and incentivising people to use the LOD system correctly isn’t easy, although there are tools (e.g. Decimator in Blender) which help in the creation of LODs for models.

As the whole issue of rendering and associated costs and calculations is now being looked at by the Lab, changes might be forthcoming to help with matters – time will tell on that.

Additional Links

• Project Bento testing page (wiki)
• Avatar body size (wiki)
• Bento Skeleton Guide (wiki)
• Project Bento user group page
• Project Bento discussion forum
• Project Bento coverage in this blog (including weekly user group meeting updates)