[usdview] 'Redraw On Frame Scrub' no longer redraws in real-time

[ianlawson]

Description of Issue

Since the refactor of the frame slider, the redraw on frame scrub no longer updates in real-time as the frame is changed. Instead, the redraw is triggered after a short pause (500ms) by the _sliderTimer.

Before the change, the redraw in the viewer happened live when the frame was scrubbed. The timer was only used to trigger updates to other UI/HUD elements as these didn't need to happen in real-time.

Changelist: 768348f

Steps to Reproduce

1. Open a USD file with animated frames
2. Enable 'Redraw On Frame Scrub'
3. Scrub the timeline
4. The timeline only updates when either:
   4a. The scrubbing is paused (for 500ms - triggered by the _sliderTimer)
   4b. The mouse is released - same behavior when 'Redraw On Frame Scrub' is disabled

System Information (OS, Hardware)

CentOS7

Package Versions

19.01

Build Flags

[ianlawson]

I'm happy to pick this up and submit a pull request as I'm currently finishing off adding functionality to specify a current frame (#296).

Just want to make sure that this is a regression and not a performance related change!

Cheers!

[spiffmon]

Hi Ian, Thanks for reporting, and apologies. We have a local fix for this that limits the use of the timer to when redrawOnScrub is false.

On Mon, Jan 7, 2019 at 3:02 AM Ian Lawson ***@***.***> wrote: I'm happy to pick this up and submit a pull request as I'm currently finishing off adding functionality to specify a current frame (#296 <#296>). Just want to make sure that this is a regression and not a performance related change! Cheers! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#734 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AF7qaFvHr6IZ-ea8HANYkScY2NYW71uJks5vAykxgaJpZM4ZzSZl> .

-- --spiffiPhone

[usmanredsoft-zz]

Kindly upload Pixar USD maya Xcode project source?

[jtran56]

Filed as internal issue #USD-4999.