No motion blur with scaling object #39023

New Issue

Cenek Strichel · 2014-03-07T13:50:03+01:00

Cenek Strichel commented

2014-03-07 13:50:03 +01:00

System Information
W7, 64b

Blender Version
571f184

Short description of error
There is no motion in scaling animation. I thinked that it is not implemented yet, but I found this revision:
Revision report

But:

scale.blend

**System Information** W7, 64b **Blender Version** 571f184 **Short description of error** There is no motion in scaling animation. I thinked that it is not implemented yet, but I found this revision: [Revision report ](https://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=51363) But: ![scale.png](https://archive.blender.org/developer/F80210/scale.png) [scale.blend](https://archive.blender.org/developer/F80212/scale.blend)

Cenek Strichel commented

2014-03-07 13:50:03 +01:00

Changed status to: 'Open'

Cenek Strichel commented

2014-03-07 13:50:03 +01:00

Added subscriber: @Cenda

Thomas Dinges commented

2014-03-07 14:39:00 +01:00

Added subscribers: @brecht, @ThomasDinges

Thomas Dinges commented

2014-03-07 14:39:01 +01:00

Scaling was disabled in a later commit, due to problems on the GPU. https://developer.blender.org/rB0d6976ad0ce4570e286ca33b852ee3b6a07a09ab

@brecht: These issues happened with CUDA Toolkit 4.2, maybe we can re-enable it?
I tested on CPU (native and OpenCL), also GPU (CUDA, OpenCL) and it works for me now. Geforce 540M. (sm_21).

Patch: cycles_scale_mblur.diff

Scaling was disabled in a later commit, due to problems on the GPU. https://developer.blender.org/rB0d6976ad0ce4570e286ca33b852ee3b6a07a09ab @brecht: These issues happened with CUDA Toolkit 4.2, maybe we can re-enable it? I tested on CPU (native and OpenCL), also GPU (CUDA, OpenCL) and it works for me now. Geforce 540M. (sm_21). Patch: [cycles_scale_mblur.diff](https://archive.blender.org/developer/F80217/cycles_scale_mblur.diff)

Cenek Strichel commented

2014-03-07 14:46:22 +01:00

I can help with testing on: Quadro 4000, geforce 470, geforce 250 and geforce 640, if you tell me how :)

Brecht Van Lommel commented

2014-03-07 14:56:05 +01:00

This limitation is documented here:
http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Integrator#Motion_Blur

If it works it's fine with me, we'll see what the impact is on various cards when it is committed.

This patch can't be enough to enable it though, in transform_motion_interpolate it's still assigning scale (stored in .z and .w) from the middle time only, the scale from pre/post is not passed to the kernel currently.

This limitation is documented here: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Integrator#Motion_Blur If it works it's fine with me, we'll see what the impact is on various cards when it is committed. This patch can't be enough to enable it though, in `transform_motion_interpolate` it's still assigning scale (stored in `.z` and `.w`) from the middle time only, the scale from pre/post is not passed to the kernel currently.

Cenek Strichel commented

2014-03-07 15:05:40 +01:00

I only want add some comment: @brecht wrote: "probably not a big loss in practice since it's not so common to animate this"

Animation of scale is very often in motion graphic, where objects are flying, disappear or appear, so unsupported Scale is big loss.

I only want add some comment: @brecht wrote: "probably not a big loss in practice since it's not so common to animate this" Animation of scale is very often in motion graphic, where objects are flying, disappear or appear, so unsupported Scale is big loss.

Brecht Van Lommel commented

2014-03-12 18:16:52 +01:00

Changed status from 'Open' to: 'Archived'

Brecht Van Lommel closed this issue

2014-03-12 18:16:52 +01:00

Brecht Van Lommel self-assigned this 2014-03-12 18:16:52 +01:00

Brecht Van Lommel commented

2014-03-12 18:16:52 +01:00

Closing as not a bug, if we want to bring this back we can review the code in differential, but for now it's a documented limitation.

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No motion blur with scaling object #39023