Screen does not update while scrolling or zooming with touchpad on a laptop #40717

New Issue

Bastien Montagne · 2014-06-20T00:59:00+02:00

Bunkerbewohner commented

2014-06-20 00:59:00 +02:00

(Migrated from localhost:3001)

System Information
Windows 8 x64, Nvidia GeForce GT 750M
(Dell Inspiron 15 7000)

Blender Version
Broken: 2.70a

Short description of error
When zooming or scrolling in any window or 3D view using two-finger gestures on the touchpad, the screen is not redrawn until the fingers have been lifted again (i.e. the gesture has ended).

Exact steps for others to reproduce the error

Use default scene (Ctrl+N)
In the 3D view, use two fingers on a multi-touch enabled touchpad and move them up or down (to zoom the view) without lifting the fingers from the touchpad
behold nothing (view is not updated accordingly)
lift up fingers to end the gesture and behold the screen updating

**System Information** Windows 8 x64, Nvidia GeForce GT 750M (Dell Inspiron 15 7000) **Blender Version** Broken: 2.70a **Short description of error** When zooming or scrolling in any window or 3D view using two-finger gestures on the touchpad, the screen is not redrawn until the fingers have been lifted again (i.e. the gesture has ended). **Exact steps for others to reproduce the error** 1. Use default scene (Ctrl+N) 2. In the 3D view, use two fingers on a multi-touch enabled touchpad and move them up or down (to zoom the view) without lifting the fingers from the touchpad 3. behold nothing (view is not updated accordingly) 4. lift up fingers to end the gesture and behold the screen updating

Bunkerbewohner commented

2014-06-20 00:59:00 +02:00

(Migrated from localhost:3001)

Changed status to: 'Open'

Bunkerbewohner commented

2014-06-20 00:59:00 +02:00

(Migrated from localhost:3001)

Added subscriber: @Bunkerbewohner

Bunkerbewohner commented

2014-06-20 01:28:28 +02:00

(Migrated from localhost:3001)

Now I just looked over Blender's code for the first time and I'm in no position to suggest anything, but I'm going to do it anyway. :D

I played around a bit with the code and figured maybe /blender/windowmanager/intern/wm_event_system:396 missing MOUSEZOOM might be the problem. But I'm gonna let the pros handle this.

Now I just looked over Blender's code for the first time and I'm in no position to suggest anything, but I'm going to do it anyway. :D I played around a bit with the code and figured maybe /blender/windowmanager/intern/wm_event_system:396 missing MOUSEZOOM might be the problem. But I'm gonna let the pros handle this.

Bastien Montagne commented

2014-06-20 08:14:47 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2014-06-20 08:14:47 +02:00

I can’t confirm this at all on Linux, so I would rather think of GHOST as potential source of the issue (since code in source/blender/windowmanager is (nearly) OS-agnostic…

I can’t confirm this at all on Linux, so I would rather think of GHOST as potential source of the issue (since code in `source/blender/windowmanager ` is (nearly) OS-agnostic…

Bunkerbewohner commented

2014-06-20 11:47:15 +02:00

(Migrated from localhost:3001)

Thanks, that very well may be the case. I literally looked at the code for the first time yesterday so I wouldn't know.
I'm definitely going to check GHOST.

Thanks, that very well may be the case. I literally looked at the code for the first time yesterday so I wouldn't know. I'm definitely going to check GHOST.

Sergey Sharybin commented

2014-08-12 13:09:59 +02:00

Added subscribers: @ideasman42, @Sergey

Sergey Sharybin commented

2014-08-12 13:09:59 +02:00

This seems to be rather a driver issue. This patch works around the issue, but i'm not 100% happy with it: http://www.pasteall.org/53411/diff

The issue is: windowproc receivesthe WM_MOUSEWHEEL message and pushes the even to the queue, however PeekMessages returns 0 for some reason. Smells like driver is doing something funky here.

@ideasman42, any ideas here?

This seems to be rather a driver issue. This patch works around the issue, but i'm not 100% happy with it: http://www.pasteall.org/53411/diff The issue is: windowproc receivesthe WM_MOUSEWHEEL message and pushes the even to the queue, however PeekMessages returns 0 for some reason. Smells like driver is doing something funky here. @ideasman42, any ideas here?

Campbell Barton commented

2014-08-13 03:32:52 +02:00

@Sergey,
Did you check on other API's use of this? Checked on QT's code and it may be bigger can of worms :S, they have a PEEKMESSAGE_IS_BROKEN define, though their workaround is for WM_MOUSEMOVE, not touchpad.

see:
0137f092af:src/plugins/platforms/windows/qwindowsmousehandler.cpp#L63-71

Further I cant offer any insights, checked over code, hack is annoying - but if its working well... I wouldn't know a better way.

@Sergey, Did you check on other API's use of this? Checked on QT's code and it may be bigger can of worms :S, they have a `PEEKMESSAGE_IS_BROKEN` define, though their workaround is for `WM_MOUSEMOVE`, not touchpad. see: https://qt.gitorious.org/qt/qtbase/source/0137f092af12110c427f05358f7b207ea95ea341:src/plugins/platforms/windows/qwindowsmousehandler.cpp#L63-71 Further I cant offer any insights, checked over code, hack is annoying - but if its working well... I wouldn't know a better way.

Sergey Sharybin commented

2014-08-13 09:42:08 +02:00

@ideasman42, yes spent quite a while on looking into other implementations and so. I didn't see other implementation which was triggering events handlong based on what PeekMessage() receives, they all tagging stuff for the update from the window proc.

I've got a patch which i think have less entropy of possible sideeffects: http://www.pasteall.org/53429/diff

@ideasman42, yes spent quite a while on looking into other implementations and so. I didn't see other implementation which was triggering events handlong based on what `PeekMessage()` receives, they all tagging stuff for the update from the window proc. I've got a patch which i think have less entropy of possible sideeffects: http://www.pasteall.org/53429/diff

blender-admin commented

2014-08-13 09:49:30 +02:00

This issue was referenced by 2eebe611e4

This issue was referenced by 2eebe611e42c149aeafcf5bcd18c7a477c813e38

Sergey Sharybin commented

2014-08-13 09:50:14 +02:00

Changed status from 'Open' to: 'Resolved'

Sergey Sharybin closed this issue

2014-08-13 09:50:14 +02:00

Sergey Sharybin commented

2014-08-13 09:50:14 +02:00

Closed by commit 2eebe611e4.

Closed by commit 2eebe611e4.

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Screen does not update while scrolling or zooming with touchpad on a laptop #40717