#version 460

layout(local_size_x = 32) in;

layout(push_constant) uniform PushConstants {
  uint first;
  uint count;
  uint views;
  float period;
};

layout(set = 0, binding = 0) buffer readonly restrict Src { uint src[]; };
layout(set = 0, binding = 1) buffer writeonly restrict Dst { uint dst[]; };

void main() {
  uint id = gl_GlobalInvocationID.x;
  if (id >= count) return;

  uint base = (first + id) * views * 2;

  uint total = 0;
  for (uint i = 0; i < views; i++) {
    total += src[base + views + i] - src[base + i];
  }

  dst[id] = uint(total * period);
}