Scene and Scene Subset - Part 2 - what I do not get
cosmo71
Posts: 3,609
Hello, here is the thing I do not get:
I have two files, one file as scene and the other file as scene subset. Both files are equal, means the have both exactly the same included, character, clothes, hairs, camera, lights and they are totally equal because I saved the scene subset from the scene with everything in the scene. These two files have exactly the same size and both should "behave" equal but they did not.
Here are the differences:
1. Loading the scene files takes more time than loading the scene subset file.
2. Saving the scene takes more time than saving the scene subset file.
3. Rendering of the scene takes more time than rendering the scene subset file, means if I load the scene and start rendering first thing that happens is that DS is going to optimzed images first. If I load the scene subset file and start rendering DS does not optimze images / or does it faster because the actual rendering starts nearly immediately. Therefore the rendertime is shorter (I also have the impression that the actual rendering is also faster)
as written above, both files are / should be equal.

Comments
Scenes store extra information - render and backdrop settings for example - so if you scene is set to use 3Delight (image optimisation) and you load your subset into a scene still on the default iray setting you will see a marked difference. When you load a scene the existing scene is closed, so memory has to be cleared and other clean-up perfomed, while a subset is merged into the existing scene.
Rendersettings are the same, there is no difference, but with the additional informations in a scene file maybe there is one reason for the "save issue" error I have had, (saving until 99% and then crash) and with some other errors I have had in the past when working with a scene file instead of working with a scene subset file what I now do.
Doesn't matter...a scene load clears and resets them...if you have the option set not to ignore them on scene load (I believe that is the default setting).
Preferences > Scene > Ignore Render Settings when opening a Scene File... check box.
So it will still take time to do that.