This is not something the classic GPU vertex pipeline can handle
(except maybe Vulkan, which can handle zero strides for instanced
attributes?), but useful for other scenarios. This means existing code
needs to be aware of and handle the new corner case.
Highly experimental and very assert-y, as it doesn't handle mesh
primitive / attribute type incompatibility or conversion of
loops/strips/fans to indexed meshes yet.
Should have been done in f10d74041b
already, but somehow I failed to test for this case -- if there are no
scenes (materials/textures), it doesn't make sense to print reference
count for cameras/meshes/lights (textures/images).
No functional change, just splitting them to two separate headers and
two separate tests. These will eventually become public SceneTools
APIs... once I figure out better naming.
Probably a leftover from when these dependencies were handled in a
much shittier way? For as long as I remember, enabling WITH_GL_INFO
always enabled WITH_GL and WITH_WINDOWLESSWHATEVERAPPLICATION
implicitly.