Blender Internal: Rendered viewport won't be updated and will crash if active render layer is changed/deleted. #38726
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Reference: blender/blender#38726
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System Information
Ubuntu 13.10 amd64
Blender Version
Broken: 2.69.11
10f4c62Worked: (maybe) before
ee6932aa8Short description of error
Rendered preview is not updated when active render layer is changed, and Blender can crash after deleting a render layer.
Exact steps for others to reproduce the error
Case 1:
The viewport is not updated anymore.
Case 2:
Then, zoom-in/out by mouse wheel causes crash.
This bug was introduced by fix for flickering black tiles in preview render (commit
ee6932aa8). RE_InitState() in pipeline.c has to clear render result if active render layer is changed. Especially, deleting render layer causes crash by attempting to show the deleted layer.Changed status to: 'Open'
Added subscriber: @IRIEShinsuke
Added subscriber: @dfelinto
confirmed both cases
Case 2 (the segfault) happens even if the
ee6932aa8is reverted, so it's not related it seems.Backtrace for case 2:
(not line-specific, I think something is messed up with my gcc)
@dfelinto Ah you are right, the cases 1 and 2 are similar but different bugs...
This issue was referenced by blender/blender-addons-contrib@277126881d
This issue was referenced by
277126881dFixed both now, thanks for the report.
Changed status from 'Open' to: 'Resolved'
Closed by commit
277126881d.Changed status from 'Resolved' to: 'Open'
Thanks, but
277126881dfixed only the case 1.The crash (case 2) still happens, unfortunately.
Yesterday I already tried exact same solution as
277126881d, but couldn't find way to solve the crash.Changed status from 'Open' to: 'Resolved'
Hopefully really solved now in {1a79abdad2443ff9f12e7efd95ee78a264a9d60a}, I can't get it to crash anymore at least.
Changed status from 'Resolved' to: 'Open'
Um, the crash seems to be fixed but another problem happens.
If we have RenderLayer1 and RenderLayer2 for example, after deleting RenderLayer1 the rendered preview still shows RenderLayer1 rather than RenderLayer2. Somewhere we have to check if render layer was deleted.
Reopening this anyway...
I made a patch D346. So far it works fine for me though it's only workaround.
This issue was referenced by blender/blender-addons-contrib@a856b123ff
This issue was referenced by
a856b123ffChanged status from 'Open' to: 'Resolved'
Closed by commit
a856b123ff.Changed status from 'Resolved' to: 'Open'
The problem still isn't resolved, deleting/adding render layer doesn't update viewport...
The following functions should need DAG_id_tag_update():
render_layer_add_exec()
render_layer_remove_exec()
rna_RenderLayer_new()
rna_RenderLayer_remove()
Committed the DAG updates now in {49e8cfd809fe578a20ef266469362b157620729c}.
Changed status from 'Open' to: 'Resolved'
Thanks, it works fine now. :)