Blender Player stutters when navigating rendered image sequence #46465
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Reference: blender/blender#46465
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System Information
Operating system and graphics card
Windows 7 Ultimate
GeForce GTX 480
Blender Version
Broken: 2.76
48f7dd6
Worked: 2.75
Short description of error
Blender Player stutters when navigating rendered image sequence (PNG, TIF tested) by dragging with the left mouse on the screen.
Exact steps for others to reproduce the error
Play rendered image sequence (not video file) by pressing Ctrl+F11 or from the command prompt using "blender -a [path to first image in the sequence]"
When in play mode - the playback is fine.
When in "drag" mode the player lags while displaying frames. Clicking on different points in the screen loads the image frame faster.
This behavior is the same, no matter the time indicator is on or off (by pressing I on the keyboard).
Changed status to: 'Open'
Added subscriber: @syziph
Added subscriber: @ideasman42
While I couldn't redo the bug. I suspect this is caused by mouse motion adding a lot of in-between events, which can be at a higher FPS then the playback rate. In this case your system could get behind in loading them.
Suggested fix is to skip mouse events if there are other mouse events - ahead in the queue, using
GHOST_EventManager::peekEvent
.This issue was referenced by
0be6ca0b83
Changed status from 'Open' to: 'Resolved'
Can you confirm that this doesn't happen for low-res images? (100x100 or so).
I confirm that there is no problem at 100x100 resolution.
Its also possible that updating the state of the audio driver is giving some overhead, could you try set audio output to None in the system preferences.
Seting the Audio Device to none does not fix this problem.
Added subscriber: @lunariusis
This bug at high resolutions render, such as 1920X1080.
50% render no bug, as 100% there is a bug .
My English is very bad, sorry.
Changed status from 'Resolved' to: 'Open'
This bug at high resolutions render, such as 1920X1080.
50% render no bug, as 100% there is a bug .
My English is very bad, sorry.
The new version of blender 2.7b this problem remained.
Added subscriber: @mont29
Changed status from 'Open' to: 'Resolved'
Please do not reopen bug yourself.
And fix is in master (you can test it by downloading the latest build from our buildbot), not in 2.76b release.
The bug is present in version https://builder.blender.org/download/blender-2.76-02f3ceb-win64.zip . Sorry for the opening of a bug.
At a resolution 960x540 and below, the error is not observed. If the resolution is higher than 960x540 (eg 1920X1080) error appears again.
Possible problem in the pre-cache?
The bug is present in version blender-2.77-windows64.
At a resolution 960x540 and below, the error is not observed. If the resolution is higher than 960x540 (eg 1920X1080) error appears again.
Added subscriber: @Blendify
@lunariusis please create a new report.
Likely this lag may just be time loading the files then.