The input variable gl_LaunchSizeEXT is available in the ray generation, intersection, any-hit, closest-hit, miss, and callable languages to specify the and and dimensions passed into a vkCmdTraceRaysKHR call.
Maybe we need change traceRayEXT to vkCmdTraceRaysKHR?
In 11.1 Ray generation (raytrace.rgen) :
In GLSL_EXT_ray_tracing :
Maybe we need change
traceRayEXT
tovkCmdTraceRaysKHR
?