This is a beginning of series of commits which will clearly separate
building IDs which are used as object data from object building.
The goal is to be able to always build whatever ID. Required to make
driver targets to work reliably with copy-on-write concept.
DATA datablock must evaluation must never depend on object it is
used for. If there is something what depends on an object, it must
be done on object level.
At least the actual callback was empty.
When the source mesh doesn't have the primary layers (CD_VERT for vdata,
etc.) the returned mesh also didn't have those layers, even when non-zero
elements were requested (for example requesting 4 vertices would still
result in mvert = NULL).
The ObjectID pass was generating per material per dupli a specific
number for the outline what results in a GPU context switch. In spring scene
01-050 a scene with many trees (duplis) generated 28000 GPU materials.
Now only new materials are created when objectid pass is enabled. Also
added a hard limit to the number of objects for the objectid pass (255)
Basically the outline between objects will not be drawn, but it will be
very hard to detect them also.
Also fixed for XRay mode.
Test this since the popup feels disruptive/flashing when its too large
when set smaller it looks closer to a menu w/ key-accelerators which is
the intention in this case.
It's also more likely the active tool can be placed under the cursor.
The recent change also used the buildtools instead of the regular compiler, you now have to explicitly state what you want to use :
2017 - the standard msvc compiler
2017pre - the msvc compiler from the preview installation
2017b - the msvc compiler from the buildtools installation
The function definitions still reside in DerivedMesh.c. Once we're done
porting all the DerivedMesh use to Mesh, we'll move the still-relevant
functions to mesh_runtime.c. This move is now cumbersome due to shared
statically-declared utility functions in DerivedMesh.c
This helps making things clearer and cleaner. Func returning filepath of
G.main is separate, so that we can easily track its usages, and
hopefully deprecate it at some point. Though that usage of G.main is
likely the less evil one, you nearly always want current blendfile path
in those cases anyway.
When run from make.bat the environment is setup correctly and the VCToolsRedistDir environment variable exists, on later invocations of cmake this may no longer be the case and a warning was emitted about the missing runtime. we can't rely on InstallRequiredSystemLibraries.cmake here since it uses the compiler version to figure out the correct location and it doesn't know how to deal with clang.
Manipulators which aren't explicitly activated via tools are now hidden.
Tool manipulators are kept because it doesn't make sense to interact
with a tool with hidden manipulators.
