Simplify grid dimension constants.
Use integer coordinates for grid texture fetches.
Configurable grid size.
Improve shader header includes.
Configurability for radix sort block size.
Merge branch 'master' into experimental
Merge branch 'master' into experimental
Another buffer tweak.
Better OpenGL extension queries.
Remove usage of GL_ARB_buffer_storage as it resulted in no performance gains.
Utilize glBindBuffersBase from GL_ARB_multi_bind where available and use a fallback where not.
Move compute shader block sizes to header definitions.
Better workaround for missing GL_ARB_clear_texture.
Fix grid hash weights.
Remove redundant memory barriers.
Uniform parameters.
Update functions for the SPH parameters.
Very simple user interface for runtime changes of the parameters.
Fix parameter change steps/limits.
Add some environment flags.