indirect_sphere.comp is adapted from FoundryMC Veil 3.4.1, LGPL-3.0. Source: https://github.com/FoundryMC/Veil
CTAW modification: declare GLSL 430 core so compute/SSBO/atomic-counter syntax compiles on Intel drivers. Original light culling algorithm is unchanged. Modified shader source and license are included in this JAR.
