PASS full particle phase
PASS dark particle phase
PASS quarter particle phase
PASS inverse square incident red
PASS source colour retained
PASS inverse square distance scaling
PASS receiver facing away is unlit
PASS flight receiver defers normal response to native shader
PASS planet occludes source
PASS receiver body skip
PASS occluder behind receiver ignored
PASS occluder beyond emitter ignored
PASS tangent ray is not blocked
PASS distributed patches conserve annulus area
PASS shadowed ring patch emits no light
PASS independent patches add flux
TOTAL 16 passed; geometry/radiance only, not Unity rendering
