Render stored a shallow copy of the scene view layers and views for thread
safety, without proper functions to free it. But with the CoW depsgraph this
scene is already a copy of the original and an additional copy is not needed.
Refactor to use the scene view layers and some other settings directly instead
of making a copy.
In T93382, the problem was that the Blender-side rendering code was
still generating the subsurface passes because the old render pass
flags were set, even though Cycles doesn't generate them anymore.
After a closer look, it turns out that the entire hardcoded pass
creation code can be removed. We already have an Engine API function
to query the list of render passes from the engine, so we might as
well just call that and create the returned passes.
Turns out that Eevee already did this anyways. On the Cycles side, it
allows to deduplicate a lot of `BlenderSync::sync_render_passes`.
Before, passes were defined in engine.py and in sync.cpp. Now, all
passes that engine.py returns are created automatically, so sync.cpp
only needs to handle a few special cases.
I'm not really concerned about affecting external renderer addons,
since they already needed to handle the old "builtin passes" in
their Engine API implementation anyways to make them show up in the
compositor. So, unless they missed that for like 10 releases, they
should not notice any difference.
Differential Revision: https://developer.blender.org/D16295
These functions are almost identical, the main difference being
BLI_join_dirfile didn't trim existing slashes when joining paths
however this isn't an important difference that warrants a separate
function.
This was not properly respected, and in general with multiple passes and layers
it's unclear what this should do exactly without breaking some render passes.
Better to keep this image format for raw unmodified render results.
This function did multiple things making it difficult to know
what was intended by the caller:
- Directory & file join.
- Expand relative '//' prefix to an optional directory.
- Expand drive letters on windows (guessing with fall-backs).
- Switch slashes to native direction.
This functionality wasn't needed as the full directory was always passed
in, so guessing the drive letter wasn't needed.
If functionality to add drive letters onto paths is needed in the future
a function that only does this can be added.
