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Re: TSC meeting on 11/11 -- yes or no?

Stephen Friedman
 

On a similar note, the 25th is a big US holiday, and I'll definitely be skipping that one.  Should we give it a pass as well?

--Stephen

On Wed, Nov 3, 2021 at 10:22 AM Lee Kerley <lkerley@...> wrote:
fine to skip from me too.

On Wed, Nov 3, 2021 at 7:57 AM Zap Andersson <zap.andersson@...> wrote:
We can skip. But the meeting after I might have a cool demo.

/Z

On Wed, Nov 3, 2021 at 12:49 AM Mitch Prater <mprater@...> wrote:
I've got nothing - it's fine with me to skip it.



--
--
Håkan "Zap" Andersson - http://twitter.com/MasterZap - the man, the myth, the concept.
--


Re: TSC meeting on 11/11 -- yes or no?

Lee Kerley
 

fine to skip from me too.


On Wed, Nov 3, 2021 at 7:57 AM Zap Andersson <zap.andersson@...> wrote:
We can skip. But the meeting after I might have a cool demo.

/Z

On Wed, Nov 3, 2021 at 12:49 AM Mitch Prater <mprater@...> wrote:
I've got nothing - it's fine with me to skip it.



--
--
Håkan "Zap" Andersson - http://twitter.com/MasterZap - the man, the myth, the concept.
--


Re: TSC meeting on 11/11 -- yes or no?

Zap Andersson
 

We can skip. But the meeting after I might have a cool demo.

/Z


On Wed, Nov 3, 2021 at 12:49 AM Mitch Prater <mprater@...> wrote:
I've got nothing - it's fine with me to skip it.



--
--
Håkan "Zap" Andersson - http://twitter.com/MasterZap - the man, the myth, the concept.
--


Re: TSC meeting on 11/11 -- yes or no?

Mitch Prater
 

I've got nothing - it's fine with me to skip it.


TSC meeting on 11/11 -- yes or no?

Larry Gritz
 

Our next TSC meeting is scheduled for Nov 11 -- that's a holiday where I live and work in Canada, and maybe other places, too?

Basic choices are:

1. Lots of people not working and/or nobody has anything super urgent, let's skip that meeting and pick up 2 weeks later.

2. LG should join even though he's not working because everybody else is working and there's so much urgent stuff and we need to meet.


Opinions?


--
Larry Gritz
lg@...


OSL v1.11.16.0 and branch rename plans

Larry Gritz
 

Today we tagged "v1.11.16.0" as the latest patch release in the 1.11 family, guaranteed to be back-compatible with both API and ABI compared to prior 1.11 releases. The "release" branch marker has also been moved to this location. Release notes are below.

The only additions this time are for compatibility with the new LLVM/clang 13.0.

Meanwhile, lots of new (and potentially API breaking activity) continue in the master branch.

Speaking of which, the OSL Technical Steering Committee decided at their last meeting to go ahead and change the name of the active development branch from "master" to "main", in keeping with the current default for new repositories across the Git ecosystem (including git itself, GitHub, and GitLab) as well as the trend among other ASWF projects.

I'll throw that switch a week from now, on Nov 7. That should give people time to be ready, although it should be minimally disruptive. I believe that GitHub will even automatically redirect requests for "master" to "main", so I think even if individual users or scripts don't update anything on their end, few things can truly break.



Release 1.11.16.0 -- 1 Nov 2021 (compared to 1.11.15.0)
-------------------------------------------------------
* Fixes to work with LLVM 13, and to compile with clang 13. #1412 #1420


--
Larry Gritz
lg@...


Upcoming Events #cal-summary

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Open Shading Language discussion list Upcoming Events

OSL TSC meeting ( every other week )

When:
Thursday, November 11, 2021, 2:00pm to 3:00pm
(GMT-08:00) America/Los Angeles

Where:
https://zoom.us/j/100511909

Organizer: Chris Kulla ckulla@...

Details:

Every other week meeting of the OSL TSC.

Meeting Agenda / Notes: https://docs.google.com/document/d/1yf0bG6eoE2EvKZBNZX3nskdTvu99ADTDTNOknCDJd1I/

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OSL TSC meeting ( every other week )

When:
Thursday, November 25, 2021, 2:00pm to 3:00pm
(GMT-08:00) America/Los Angeles

Where:
https://zoom.us/j/100511909

Organizer: Chris Kulla ckulla@...

Details:

Every other week meeting of the OSL TSC.

Meeting Agenda / Notes: https://docs.google.com/document/d/1yf0bG6eoE2EvKZBNZX3nskdTvu99ADTDTNOknCDJd1I/

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Now: OSL TSC meeting ( every other week ) - 10/28/2021 #cal-notice

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OSL TSC meeting ( every other week )

When:
10/28/2021
2:00pm to 3:00pm
(UTC-07:00) America/Los Angeles

Where:
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Organizer: Chris Kulla ckulla@...

View Event

Description:

Every other week meeting of the OSL TSC.

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Reminder: OSL TSC meeting ( every other week )

When:
10/28/2021
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Where:
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View Event

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Every other week meeting of the OSL TSC.

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Reminder: OSL TSC meeting ( every other week )

When:
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Every other week meeting of the OSL TSC.

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Reminder: OSL TSC meeting ( every other week )

When:
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Upcoming Events #cal-summary

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Open Shading Language discussion list Upcoming Events

OSL TSC meeting ( every other week )

When:
Thursday, October 28, 2021, 2:00pm to 3:00pm
(GMT-07:00) America/Los Angeles

Where:
https://zoom.us/j/100511909

Organizer: Chris Kulla ckulla@...

Details:

Every other week meeting of the OSL TSC.

Meeting Agenda / Notes: https://docs.google.com/document/d/1yf0bG6eoE2EvKZBNZX3nskdTvu99ADTDTNOknCDJd1I/

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OSL TSC meeting ( every other week )

When:
Thursday, November 11, 2021, 2:00pm to 3:00pm
(GMT-08:00) America/Los Angeles

Where:
https://zoom.us/j/100511909

Organizer: Chris Kulla ckulla@...

Details:

Every other week meeting of the OSL TSC.

Meeting Agenda / Notes: https://docs.google.com/document/d/1yf0bG6eoE2EvKZBNZX3nskdTvu99ADTDTNOknCDJd1I/

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Event: OSL TSC meeting ( every other week ) - 10/28/2021 #cal-reminder

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Reminder: OSL TSC meeting ( every other week )

When:
10/28/2021
2:00pm to 3:00pm
(UTC-07:00) America/Los Angeles

Where:
https://zoom.us/j/100511909

Organizer: Chris Kulla ckulla@...

View Event

Description:

Every other week meeting of the OSL TSC.

Meeting Agenda / Notes: https://docs.google.com/document/d/1yf0bG6eoE2EvKZBNZX3nskdTvu99ADTDTNOknCDJd1I/

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Upcoming Events #cal-summary

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Open Shading Language discussion list Upcoming Events

OSL TSC meeting ( every other week )

When:
Thursday, October 28, 2021, 2:00pm to 3:00pm
(GMT-07:00) America/Los Angeles

Where:
https://zoom.us/j/100511909

Organizer: Chris Kulla ckulla@...

Details:

Every other week meeting of the OSL TSC.

Meeting Agenda / Notes: https://docs.google.com/document/d/1yf0bG6eoE2EvKZBNZX3nskdTvu99ADTDTNOknCDJd1I/

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OSL TSC meeting ( every other week )

When:
Thursday, November 11, 2021, 2:00pm to 3:00pm
(GMT-08:00) America/Los Angeles

Where:
https://zoom.us/j/100511909

Organizer: Chris Kulla ckulla@...

Details:

Every other week meeting of the OSL TSC.

Meeting Agenda / Notes: https://docs.google.com/document/d/1yf0bG6eoE2EvKZBNZX3nskdTvu99ADTDTNOknCDJd1I/

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Laika Material Github Repo

Mitch Prater
 

Just a quick follow up to the github link from the meeting. Unfortunately, I never got around to adding much (any) documentation, so the repo code itself isn't that much use (unless you have an operable RenderMan 20 installation).
However, the material system concepts are listed here: https://github.com/LaikaStudios/shading-library/wiki/prman_20.Home

  • A Material template is used to create a Material shader. It encapsulates all characteristics of a physical material (which includes displacement).
  • Multiple Material shaders can be attached, as an ordered set of coshaders, to a given surface in order to layer multiple materials onto the object.
  • The Material shader itself is composed of layered strata, each consisting of any number of illumination Responses. Individual Responses are added to a given Material shader as determined by the characteristics of the material and the shader author. The interaction of these responses with each other and to illumination is, by default, designed to be energy conserving and physically correct.
  • Displacement in each Material Layer is influenced by the displacements of the materials under it in an automatic, but user-controllable way. In this manner, a Material shader represents a true physical material and not simply a set of illumination responses.
  • The illumination produced by light sources can be influenced by specialized coshaders called Light Effectors, which can alter any characteristic of the illumination produced by the light. In this way, a small number of atomic light source shaders can be used to create an infinite variety of lights and lighting effects. These Light Effector effects can be associated with light sources, surfaces, or both.
  • A powerful, efficient, and extensive Override mechanism. This allows any shader parameter's value to be easily overridden in highly specific and broadly configurable ways within the scene in order to tailor the rendered image as needed.
mitch


Now: OSL TSC meeting ( every other week ) - 10/14/2021 #cal-notice

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OSL TSC meeting ( every other week )

When:
10/14/2021
2:00pm to 3:00pm
(UTC-07:00) America/Los Angeles

Where:
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Organizer: Chris Kulla ckulla@...

View Event

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Every other week meeting of the OSL TSC.

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Event: OSL TSC meeting ( every other week ) - 10/14/2021 #cal-reminder

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Reminder: OSL TSC meeting ( every other week )

When:
10/14/2021
2:00pm to 3:00pm
(UTC-07:00) America/Los Angeles

Where:
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Organizer: Chris Kulla ckulla@...

View Event

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Every other week meeting of the OSL TSC.

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Reminder: OSL TSC meeting ( every other week )

When:
10/14/2021
2:00pm to 3:00pm
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Where:
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Organizer: Chris Kulla ckulla@...

View Event

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Every other week meeting of the OSL TSC.

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Does anybody care about TextureSystem::shadow()?

Larry Gritz
 

When dinosaurs roamed the earth, OIIO's TextureSystem API assumed it might be used for many different types of renderers, and so we had placeholders for shadow mapping calls (and related parameters in the TextureOptions).

We never implemented them, because soon after founding OIIO, I started working someplace that was using a ray tracer, so it was not a priority or need for me personally. And not long after that, there was an asteroid impact, and in the aftermath, ray tracers became the dominant land species, and now people barely remember the lumbering rendering beasts that needed shadow maps. In short, we never quite got around to implementing shadow maps, and nobody asked for them.

Now, I know that some people either have forked OIIO or have a completely different TS implementation hiding behind its API (for the sake of OSL, which uses the API but doesn't really care if it's actually OIIO's implementation or a custom one).

Does anybody still care about the TS::shadow() methods, or the shadow-related fields in TextureOpt? Would anybody get bent out of shape if we deprecated them and slated them for eventual removal next time we reach a version milestone where API back-compatibility is not necessary? Or is there a reason to keep them?

Cross-posting to both oiio and osl mail lists to catch everybody who would know or care.

--
Larry Gritz
lg@...


Event: OSL TSC meeting ( every other week ) - 10/14/2021 #cal-reminder

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Reminder: OSL TSC meeting ( every other week )

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10/14/2021
2:00pm to 3:00pm
(UTC-07:00) America/Los Angeles

Where:
https://zoom.us/j/100511909

Organizer: Chris Kulla ckulla@...

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Description:

Every other week meeting of the OSL TSC.

Meeting Agenda / Notes: https://docs.google.com/document/d/1yf0bG6eoE2EvKZBNZX3nskdTvu99ADTDTNOknCDJd1I/

Confirm this meeting invite is still valid by finding the meeting at https://lists.aswf.io/calendar.

Join Zoom Meeting https://zoom.us/j/100511909

Meeting ID: 100 511 909

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