Knowing which are right required making the function non-static, so the shadow manager had to become a singleton as the results of passing it around to where it's needed were hellish.
I'm seeing a bunch of OpenGL errors when actually using this, so I'll investigate whether they're happening on master.
I'm hesitant to look into it too much, though, as I'm affected by https://gitlab.com/OpenMW/openmw/-/issues/7811, and also have the Windows setting enabled that turns driver timeouts into a BSOD so a kernel dump is collected that I can send to AMD.
Currently, we always traverse the scene graph an additional time with a ComputeLightSpaceBounds visitor during shadow casting. ComputeLightSpaceBounds is only useful when the shadow casting mask allows us to shrink the bounds of the rendered scene, so we guard its traversal with a check against getCastsShadowTraversalMask. In practice, this guard never works because we build the traversal mask inclusively.
With this PR we limit the getCastsShadowTraversalMask check to relevant masks. This new check allows us to skip a superfluous ComputeLightSpaceBounds traversal with most settings.
/home/elsid/dev/openmw/components/sceneutil/shadow.cpp💯9: warning: Call to virtual function during construction [clang-analyzer-optin.cplusplus.VirtualCall]
setupShadowSettings();
^
/home/elsid/dev/openmw/components/sceneutil/shadow.cpp💯9: note: This constructor of an object of type 'ShadowManager' has not returned when the virtual method was called
/home/elsid/dev/openmw/components/sceneutil/shadow.cpp💯9: note: Call to virtual function during construction
/home/elsid/dev/openmw/components/sceneutil/shadow.cpp:104:9: warning: Call to virtual function during construction [clang-analyzer-optin.cplusplus.VirtualCall]
enableOutdoorMode();
^
/home/elsid/dev/openmw/components/sceneutil/shadow.cpp:104:9: note: This constructor of an object of type 'ShadowManager' has not returned when the virtual method was called
/home/elsid/dev/openmw/components/sceneutil/shadow.cpp:104:9: note: Call to virtual function during construction
