#include "kernel_SimpleRadialCalib_retract.h"
#include "memops.cuh"
#include <cooperative_groups.h>
#include <cooperative_groups/details/partitioning.h>
#include <cooperative_groups/memcpy_async.h>
#include <cooperative_groups/reduce.h>
#include <cuda_runtime.h>

namespace cg = cooperative_groups;

namespace caspar {

__global__ void __launch_bounds__(1024, 1) SimpleRadialCalibRetractKernel(
    float* SimpleRadialCalib,
    unsigned int SimpleRadialCalib_num_alloc,
    float* delta,
    unsigned int delta_num_alloc,
    float* out_SimpleRadialCalib_retracted,
    unsigned int out_SimpleRadialCalib_retracted_num_alloc,
    size_t problem_size) {
  const int global_thread_idx = blockIdx.x * blockDim.x + threadIdx.x;

  float r0, r1, r2, r3, r4, r5, r6, r7;

  if (global_thread_idx < problem_size) {
    ReadIdx4<1024, float, float, float4>(SimpleRadialCalib,
                                         0 * SimpleRadialCalib_num_alloc,
                                         global_thread_idx,
                                         r0,
                                         r1,
                                         r2,
                                         r3);
    ReadIdx4<1024, float, float, float4>(
        delta, 0 * delta_num_alloc, global_thread_idx, r4, r5, r6, r7);
    r4 = r0 + r4;
    r5 = r1 + r5;
    r6 = r2 + r6;
    r7 = r3 + r7;
    WriteIdx4<1024, float, float, float4>(
        out_SimpleRadialCalib_retracted,
        0 * out_SimpleRadialCalib_retracted_num_alloc,
        global_thread_idx,
        r4,
        r5,
        r6,
        r7);
  };
}

void SimpleRadialCalibRetract(
    float* SimpleRadialCalib,
    unsigned int SimpleRadialCalib_num_alloc,
    float* delta,
    unsigned int delta_num_alloc,
    float* out_SimpleRadialCalib_retracted,
    unsigned int out_SimpleRadialCalib_retracted_num_alloc,
    size_t problem_size) {
  if (problem_size == 0) {
    return;
  }

  const int n_blocks = (problem_size + 1024 - 1) / 1024;
  SimpleRadialCalibRetractKernel<<<n_blocks, 1024>>>(
      SimpleRadialCalib,
      SimpleRadialCalib_num_alloc,
      delta,
      delta_num_alloc,
      out_SimpleRadialCalib_retracted,
      out_SimpleRadialCalib_retracted_num_alloc,
      problem_size);
}

}  // namespace caspar