Date   

Event: OSL TSC meeting ( every other week ) - 01/20/2022 #cal-reminder

osl-dev@lists.aswf.io Calendar <noreply@...>
 

Reminder: OSL TSC meeting ( every other week )

When:
01/20/2022
2:00pm to 3:00pm
(UTC-08:00) 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/

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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Event: OSL TSC meeting ( every other week ) - 01/20/2022 #cal-reminder

osl-dev@lists.aswf.io Calendar <noreply@...>
 

Reminder: OSL TSC meeting ( every other week )

When:
01/20/2022
2:00pm to 3:00pm
(UTC-08:00) 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/

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

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Meeting ID: 100 511 909

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Upcoming Events #cal-summary

osl-dev@lists.aswf.io Calendar <osl-dev@...>
 

Open Shading Language discussion list Upcoming Events

OSL TSC meeting ( every other week )

When:
Thursday, January 20, 2022, 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/

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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View Event


OSL TSC meeting ( every other week )

When:
Thursday, February 3, 2022, 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/

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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View Event


Event: OSL TSC meeting ( every other week ) - 01/20/2022 #cal-reminder

osl-dev@lists.aswf.io Calendar <noreply@...>
 

Reminder: OSL TSC meeting ( every other week )

When:
01/20/2022
2:00pm to 3:00pm
(UTC-08:00) 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/

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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OSL v1.11.17.0 release

Larry Gritz
 

We have tagged v1.11.17.0 and updated the "release" branch marker to this point, as the latest supported production release of OSL. This is guaranteed to be API, ABI, and link backward-compatible with prior 1.11.* releases.



Release 1.11.17.0 -- 7 Jan 2022 (compared to 1.11.16.0)
-------------------------------------------------------
* Fix in runtime optimizer where tracking of messages and unknown messages
relied on uninitialized variables. #1447
* Minor changes related to OpenColorIO changing their master branch name to
"main". #1431
* Testing: Get texture3d tests operational again. #1437
* Docs: Fix missing "errormessage" explanation for environment() and
texture3d(). #1442
* Build/cmake fixes: Make PROJECT_VERSION_RELEASE_TYPE and
OSL_SUPPORTED_RELEASE be cache strings, so they can be overridden; change
OSL_IS_SUBPROJECT to PROJECT_IS_TOP_LEVEL (and change its sense) to match
CMake 21+ behavior; add a TIME_COMMANDS option to help debug performance of
the build. #1443


--
Larry Gritz
lg@...


Upcoming Events #cal-summary

osl-dev@lists.aswf.io Calendar <osl-dev@...>
 

Open Shading Language discussion list Upcoming Events

OSL TSC meeting ( every other week )

When:
Thursday, January 20, 2022, 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/

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

One tap mobile +16465588656,,100511909# US (New York) +13126266799,,100511909# US (Chicago)

Dial by your location +1 646 558 8656 US (New York) +1 312 626 6799 US (Chicago) +1 669 900 6833 US (San Jose) +1 253 215 8782 US +1 301 715 8592 US +1 346 248 7799 US (Houston) 877 369 0926 US Toll-free 855 880 1246 US Toll-free +1 587 328 1099 Canada +1 647 374 4685 Canada +1 647 558 0588 Canada +1 778 907 2071 Canada +1 438 809 7799 Canada 855 703 8985 Canada Toll-free Meeting ID: 100 511 909 Find your local number: https://zoom.us/u/acBVrM6HWR

View Event


OSL TSC meeting ( every other week )

When:
Thursday, February 3, 2022, 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/

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

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Meeting ID: 100 511 909

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Now: OSL TSC meeting ( every other week ) - 01/06/2022 #cal-notice

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OSL TSC meeting ( every other week )

When:
01/06/2022
2:00pm to 3:00pm
(UTC-08:00) 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/

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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Event: OSL TSC meeting ( every other week ) - 01/06/2022 #cal-reminder

osl-dev@lists.aswf.io Calendar <noreply@...>
 

Reminder: OSL TSC meeting ( every other week )

When:
01/06/2022
2:00pm to 3:00pm
(UTC-08:00) 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/

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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Event: OSL TSC meeting ( every other week ) - 01/06/2022 #cal-reminder

osl-dev@lists.aswf.io Calendar <noreply@...>
 

Reminder: OSL TSC meeting ( every other week )

When:
01/06/2022
2:00pm to 3:00pm
(UTC-08:00) 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/

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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Dial by your location +1 646 558 8656 US (New York) +1 312 626 6799 US (Chicago) +1 669 900 6833 US (San Jose) +1 253 215 8782 US +1 301 715 8592 US +1 346 248 7799 US (Houston) 877 369 0926 US Toll-free 855 880 1246 US Toll-free +1 587 328 1099 Canada +1 647 374 4685 Canada +1 647 558 0588 Canada +1 778 907 2071 Canada +1 438 809 7799 Canada 855 703 8985 Canada Toll-free Meeting ID: 100 511 909 Find your local number: https://zoom.us/u/acBVrM6HWR


Event: OSL TSC meeting ( every other week ) - 01/06/2022 #cal-reminder

osl-dev@lists.aswf.io Calendar <noreply@...>
 

Reminder: OSL TSC meeting ( every other week )

When:
01/06/2022
2:00pm to 3:00pm
(UTC-08:00) 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/

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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Dial by your location +1 646 558 8656 US (New York) +1 312 626 6799 US (Chicago) +1 669 900 6833 US (San Jose) +1 253 215 8782 US +1 301 715 8592 US +1 346 248 7799 US (Houston) 877 369 0926 US Toll-free 855 880 1246 US Toll-free +1 587 328 1099 Canada +1 647 374 4685 Canada +1 647 558 0588 Canada +1 778 907 2071 Canada +1 438 809 7799 Canada 855 703 8985 Canada Toll-free Meeting ID: 100 511 909 Find your local number: https://zoom.us/u/acBVrM6HWR


Upcoming Events #cal-summary

osl-dev@lists.aswf.io Calendar <osl-dev@...>
 

Open Shading Language discussion list Upcoming Events

OSL TSC meeting ( every other week )

When:
Thursday, January 6, 2022, 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/

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

One tap mobile +16465588656,,100511909# US (New York) +13126266799,,100511909# US (Chicago)

Dial by your location +1 646 558 8656 US (New York) +1 312 626 6799 US (Chicago) +1 669 900 6833 US (San Jose) +1 253 215 8782 US +1 301 715 8592 US +1 346 248 7799 US (Houston) 877 369 0926 US Toll-free 855 880 1246 US Toll-free +1 587 328 1099 Canada +1 647 374 4685 Canada +1 647 558 0588 Canada +1 778 907 2071 Canada +1 438 809 7799 Canada 855 703 8985 Canada Toll-free Meeting ID: 100 511 909 Find your local number: https://zoom.us/u/acBVrM6HWR

View Event


OSL TSC meeting ( every other week )

When:
Thursday, January 20, 2022, 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/

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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Dial by your location +1 646 558 8656 US (New York) +1 312 626 6799 US (Chicago) +1 669 900 6833 US (San Jose) +1 253 215 8782 US +1 301 715 8592 US +1 346 248 7799 US (Houston) 877 369 0926 US Toll-free 855 880 1246 US Toll-free +1 587 328 1099 Canada +1 647 374 4685 Canada +1 647 558 0588 Canada +1 778 907 2071 Canada +1 438 809 7799 Canada 855 703 8985 Canada Toll-free Meeting ID: 100 511 909 Find your local number: https://zoom.us/u/acBVrM6HWR

View Event


Event: OSL TSC meeting ( every other week ) - 01/06/2022 #cal-reminder

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Reminder: OSL TSC meeting ( every other week )

When:
01/06/2022
2:00pm to 3:00pm
(UTC-08:00) 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/

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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Re: Vector property missing when translating RSL to OSL

Larry Gritz
 

In the original RSL, there were no structures, and "." was appropriated to be the dot product operator! (We later came to regret that once the utility of structures was evident.)

So I think what you want is

    thOutPrime = asin(dot(ssOutDir, axis));

(This was the second response I wrote to your email, the first being just totally perplexed and begging to see the declaration ofssOutDir. Then I started thinking about the "asin" and why anybody would ever take the component-by-component asin of a vector, that made no sense. Then just before I hit "send", I realized that asin is useful for computing the angle between two vectors from their dot product... and it all fell into place.)


On Dec 27, 2021, at 6:31 AM, anders.steen98@... wrote:

This was originally posted in the RenderMan forum, but I think someone here might know the answer, so I'll try posting here.

I'm in the process of translating the wood BRDF from the paper Measuring and Modeling the Appearance of Finished Wood by Marschner et al. from RenderMan Shading Language to Open Shading Language.
One line reads:

  1. thOutPrime = asin ( ssOutDir.axis );

where ssOutDir is a vector and thOutPrime is a float.
The OSL compiler complains about that line, saying there is no 'axis' property of a vector, so I'm wondering what the axis property actually is equivalent to. I've scoured the docs and forums but have found no answer. Anyone who knows and can tell me?


--
Larry Gritz





Vector property missing when translating RSL to OSL

anders.steen98@...
 

This was originally posted in the RenderMan forum, but I think someone here might know the answer, so I'll try posting here.

I'm in the process of translating the wood BRDF from the paper Measuring and Modeling the Appearance of Finished Wood by Marschner et al. from RenderMan Shading Language to Open Shading Language.
One line reads:

  1. thOutPrime = asin ( ssOutDir.axis );

where ssOutDir is a vector and thOutPrime is a float.
The OSL compiler complains about that line, saying there is no 'axis' property of a vector, so I'm wondering what the axis property actually is equivalent to. I've scoured the docs and forums but have found no answer. Anyone who knows and can tell me?


Upcoming Events #cal-summary

osl-dev@lists.aswf.io Calendar <osl-dev@...>
 

Open Shading Language discussion list Upcoming Events

OSL TSC meeting ( every other week )

When:
Thursday, January 6, 2022, 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/

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

One tap mobile +16465588656,,100511909# US (New York) +13126266799,,100511909# US (Chicago)

Dial by your location +1 646 558 8656 US (New York) +1 312 626 6799 US (Chicago) +1 669 900 6833 US (San Jose) +1 253 215 8782 US +1 301 715 8592 US +1 346 248 7799 US (Houston) 877 369 0926 US Toll-free 855 880 1246 US Toll-free +1 587 328 1099 Canada +1 647 374 4685 Canada +1 647 558 0588 Canada +1 778 907 2071 Canada +1 438 809 7799 Canada 855 703 8985 Canada Toll-free Meeting ID: 100 511 909 Find your local number: https://zoom.us/u/acBVrM6HWR

View Event


OSL TSC meeting ( every other week )

When:
Thursday, January 20, 2022, 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/

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

One tap mobile +16465588656,,100511909# US (New York) +13126266799,,100511909# US (Chicago)

Dial by your location +1 646 558 8656 US (New York) +1 312 626 6799 US (Chicago) +1 669 900 6833 US (San Jose) +1 253 215 8782 US +1 301 715 8592 US +1 346 248 7799 US (Houston) 877 369 0926 US Toll-free 855 880 1246 US Toll-free +1 587 328 1099 Canada +1 647 374 4685 Canada +1 647 558 0588 Canada +1 778 907 2071 Canada +1 438 809 7799 Canada 855 703 8985 Canada Toll-free Meeting ID: 100 511 909 Find your local number: https://zoom.us/u/acBVrM6HWR

View Event


Upcoming Events #cal-summary

osl-dev@lists.aswf.io Calendar <osl-dev@...>
 

Open Shading Language discussion list Upcoming Events

OSL TSC meeting ( every other week )

When:
Thursday, January 6, 2022, 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/

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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Re: u,v barycentric coordinates vs. map coords

philippe.groarke@...
 

It seems OSL is a bit less renderer agnostic than I was expecting. Is cross-DCC eval a goal of OSL, or are these differences expected/accepted? I couldn't find any info on an official way to get the current renderer, but that would help if OSL is expected to have these kinds of discrepancies. I'm thinking a standardized way to ifdef according to renderer (not sure how that would be standardized). Or even a runtime call would help for these edge cases.

@Chris To answer your question. Currently I'm experimenting with interpolating tangents in screen space (tbd if it ever works). This may be an Arnold thing, but its tangents (dpdu, dpdv) are per triangle. I need this to compute a surface curvature map using the jacobian eigenvalues. Overall I'd say barycentric coords are very useful for any type of screen space interpolation.

Take care,
Philippe


Re: u,v barycentric coordinates vs. map coords

Sam Assadian
 

We also tend to use the  coordinate system  of implicit  primitive for u and v (for both Angie and Clarisse's classic renderer). We felt that was more logical. We also added s and t for the first UV map available (on the classic Clarisse renderer exclusively). FYI

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On Tue, Dec 14, 2021 at 9:53 AM Chris Kulla <ckulla@...> wrote:
It can vary depending on the renderer. I believe Arnold and 3dsmax use the texture coordinates, but Prman has historically used the surface parameterization.

Are you thinking you would need the barycentric coordinates of the tessellated triangle of the mesh? What use cases do you have in mind for those?



Re: u,v barycentric coordinates vs. map coords

Chris Kulla
 

It can vary depending on the renderer. I believe Arnold and 3dsmax use the texture coordinates, but Prman has historically used the surface parameterization.

Are you thinking you would need the barycentric coordinates of the tessellated triangle of the mesh? What use cases do you have in mind for those?



Cancelled Event: OSL TSC meeting ( every other week ) - Thursday, December 23, 2021 #cal-cancelled

osl-dev@lists.aswf.io Calendar <noreply@...>
 

Cancelled: OSL TSC meeting ( every other week )

This event has been cancelled.

When:
Thursday, December 23, 2021
2:00pm to 3:00pm
(UTC-08:00) America/Los Angeles

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

Organizer: Chris Kulla ckulla@...

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

One tap mobile +16465588656,,100511909# US (New York) +13126266799,,100511909# US (Chicago)

Dial by your location +1 646 558 8656 US (New York) +1 312 626 6799 US (Chicago) +1 669 900 6833 US (San Jose) +1 253 215 8782 US +1 301 715 8592 US +1 346 248 7799 US (Houston) 877 369 0926 US Toll-free 855 880 1246 US Toll-free +1 587 328 1099 Canada +1 647 374 4685 Canada +1 647 558 0588 Canada +1 778 907 2071 Canada +1 438 809 7799 Canada 855 703 8985 Canada Toll-free Meeting ID: 100 511 909 Find your local number: https://zoom.us/u/acBVrM6HWR

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