[Bf-cycles] Interactive rendering and scene changes

[Stefan Werner]

Blender’s rendered viewport keeps the session alive while objects are added and removed. When you run Blender in a debugger, you can set a breakpoint in objects.cpp Object::~Object() to get a call stack of when and where that happens or you can step through BlenderSession::synchronize() in blender_session.cpp to get the full picture of how Blender updates a Cycles session with object changes.

-Stefan

> On 19. Dec 2018, at 11:03, Cédric PAILLE <cedricpaille at gmail.com> wrote:
> 
> Thank you for your reply, As I understand, there is no way to add/remove objects interactively. It seems (maybe I'm wrong) that the session deleted, then re-created after a scene change. Anyone can confirm ?
> 
> On Tue, Dec 18, 2018 at 8:06 PM Mohamed Sakr <3dsakr at gmail.com <mailto:3dsakr at gmail.com>> wrote:
> Hi,
> 
> in general, follow what blender exporter does (files under Blender/ in the Cycles Standalone repo).
> you may need to do a tag update that is probably missing and causing your crash.
> 
> cheers,
> Mohamed Sakr
> 
> On Tue, Dec 18, 2018 at 1:10 PM Cédric PAILLE <cedricpaille at gmail.com <mailto:cedricpaille at gmail.com>> wrote:
> Hi,
> 
> I'm new to the list, and I'm trying to integrate Cycles in our pipeline. It's working pretty well, but I'm stuck when it comes to add/remove objects from the scene in interactive mode. I tried to pause the session, but I always get a crash when I delete object from the scene (scene.objects vector)
> 
> Is there a developper documentation about that ?
> 
> Thank you and congratulation for the great job.
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