The previous commit corrected the RNG behavior for the lightbaker but
also made it significantly slower on high core count systems. Due to the
vector of states being physically close together in RAM we force a cache
synchronization across all cores whenever we call for the next random
number to be generated.
This will create a temporary local copy of the RNG state before entering
the loop and then saving it back to the global state when done. This
will preserve the per-thread RNG state (and random number quality) while
significantly improving performance.
On my 16 thread box it saves 3 minutes baking the Sponza scene, bringing
performance back in line to before the various RNG fixes were
introduced, being slightly faster than the first implementation.
In our previous attempts to fix the lightmapper we may have
inadvertently introduced the same issue we were trying to fix. It
appears that rand() will on some platforms introduce a mutex making it
slower and on others may have a per-thread state that would need to be
initialized with srand() on each thread. This slows down the lightbaking
further.
This sets up a separate rng state for each OpenMP thread by calling
rand() only in the single-threaded part of the code. We then keep a
vector of states.
I believe this solves our problems.
If a scene is modified and a user closes the editor and selects the "Save
and exit" option in the modal dialog -- the editor crashes. This appears
to be a result of the message queue being memdeleted AFTER visual servers
have been destroyed. Remnant textures handled by the message queue throw a
NRE when their own ~Texture destructors reference the visual servers.
This fixes bugs: #12946 and #12813.
Fixes#14832
- Added an option in the editor settings/cursor to make the cursor move with right click.
- If the option is activated (true by default), a right click will move the cursor before displaying context menu.
- If there is a selection, a right click on it will keep it selected, a right click outside it will unselect it.
- The option is available in textEdit via an inspector property (or via GDScript): caret_moving_by_right_click
- The option is available in the script editor and the shader editor via the editor settings
- The documentation has been updated with the new property, and a few other entries in TextEdit.xml.
