#include "kernel_SimpleRadialPose_start_w_contribute.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)
    SimpleRadialPoseStartWContributeKernel(
        float* SimpleRadialPose_precond_diag,
        unsigned int SimpleRadialPose_precond_diag_num_alloc,
        const float* const diag,
        float* SimpleRadialPose_p,
        unsigned int SimpleRadialPose_p_num_alloc,
        float* out_SimpleRadialPose_w,
        unsigned int out_SimpleRadialPose_w_num_alloc,
        size_t problem_size) {
  const int global_thread_idx = blockIdx.x * blockDim.x + threadIdx.x;
  __shared__ uint8_t inout_shared[4096];

  float r0, r1, r2, r3, r4, r5, r6, r7, r8;

  if (global_thread_idx < problem_size) {
    ReadIdx4<1024, float, float, float4>(
        SimpleRadialPose_precond_diag,
        0 * SimpleRadialPose_precond_diag_num_alloc,
        global_thread_idx,
        r0,
        r1,
        r2,
        r3);
  };
  LoadUnique<1, float, float>(diag, 0, (float*)inout_shared);
  if (global_thread_idx < problem_size) {
    ReadShared1<float>((float*)inout_shared, 0, r4);
  };
  __syncthreads();
  if (global_thread_idx < problem_size) {
    r0 = r0 * r4;
    ReadIdx4<1024, float, float, float4>(SimpleRadialPose_p,
                                         0 * SimpleRadialPose_p_num_alloc,
                                         global_thread_idx,
                                         r5,
                                         r6,
                                         r7,
                                         r8);
    r0 = r0 * r5;
    r1 = r1 * r4;
    r1 = r1 * r6;
    r2 = r2 * r4;
    r2 = r2 * r7;
    r3 = r3 * r4;
    r3 = r3 * r8;
    AddIdx4<1024, float, float, float4>(out_SimpleRadialPose_w,
                                        0 * out_SimpleRadialPose_w_num_alloc,
                                        global_thread_idx,
                                        r0,
                                        r1,
                                        r2,
                                        r3);
    ReadIdx2<1024, float, float, float2>(
        SimpleRadialPose_precond_diag,
        4 * SimpleRadialPose_precond_diag_num_alloc,
        global_thread_idx,
        r3,
        r2);
    r3 = r3 * r4;
    ReadIdx2<1024, float, float, float2>(SimpleRadialPose_p,
                                         4 * SimpleRadialPose_p_num_alloc,
                                         global_thread_idx,
                                         r1,
                                         r0);
    r3 = r3 * r1;
    r4 = r2 * r4;
    r4 = r4 * r0;
    AddIdx2<1024, float, float, float2>(out_SimpleRadialPose_w,
                                        4 * out_SimpleRadialPose_w_num_alloc,
                                        global_thread_idx,
                                        r3,
                                        r4);
  };
}

void SimpleRadialPoseStartWContribute(
    float* SimpleRadialPose_precond_diag,
    unsigned int SimpleRadialPose_precond_diag_num_alloc,
    const float* const diag,
    float* SimpleRadialPose_p,
    unsigned int SimpleRadialPose_p_num_alloc,
    float* out_SimpleRadialPose_w,
    unsigned int out_SimpleRadialPose_w_num_alloc,
    size_t problem_size) {
  if (problem_size == 0) {
    return;
  }

  const int n_blocks = (problem_size + 1024 - 1) / 1024;
  SimpleRadialPoseStartWContributeKernel<<<n_blocks, 1024>>>(
      SimpleRadialPose_precond_diag,
      SimpleRadialPose_precond_diag_num_alloc,
      diag,
      SimpleRadialPose_p,
      SimpleRadialPose_p_num_alloc,
      out_SimpleRadialPose_w,
      out_SimpleRadialPose_w_num_alloc,
      problem_size);
}

}  // namespace caspar