/*
 * Copyright (C) 2017-2020 Intel Corporation
 *
 * SPDX-License-Identifier: MIT
 *
 */

void block_fn(size_t tid, int mul, __global int* res)
{
  res[tid] = mul * 7 - 21;
}

kernel void simple_block_kernel(__global int* res)
{
  int multiplier = 3;
  size_t tid = get_global_id(0);

  void (^kernelBlock)(void) = ^{ block_fn(tid, multiplier, res); };

  res[tid] = -1;
  queue_t def_q = get_default_queue();
  ndrange_t ndrange = ndrange_1D(1);
  int enq_res = enqueue_kernel(def_q, CLK_ENQUEUE_FLAGS_WAIT_KERNEL, ndrange, kernelBlock);
  if(enq_res != CLK_SUCCESS) { res[tid] = -1; return; }
}

void block_reflection(ulong scalar, __global uint* buffer, read_only image3d_t img, sampler_t sampler)
{
  float4 color;
  int4 coord;
  buffer[0] = scalar;
  coord.x = scalar;
  coord.y = 0;
  coord.z = 0;

  int width = get_image_width( img );
  int heigth = get_image_height( img );
  int depth = get_image_depth( img );
  
  int order = get_image_channel_order( img );
  int type = get_image_channel_data_type( img );
  
  color = read_imagef( img, sampler, coord );
  buffer[1] = (uint)color.x;
  buffer[2] = (uint)width;
  buffer[3] = (uint)heigth;
  buffer[4] = (uint)depth;
  buffer[5] = (uint)order;
  buffer[6] = (uint)type;
  
  sampler_t samplerA = CLK_NORMALIZED_COORDS_TRUE | CLK_ADDRESS_CLAMP_TO_EDGE | CLK_FILTER_NEAREST;
  color = read_imagef( img, samplerA, coord );
  
  buffer[7] = (uint)color.y;

  queue_t def_q = get_default_queue();
  ndrange_t ndrange = ndrange_1D(1);
  if( scalar > 2 ){
     scalar--;
	 int enq_res = enqueue_kernel(def_q, CLK_ENQUEUE_FLAGS_WAIT_KERNEL, ndrange, ^{block_reflection(scalar, buffer, img, sampler);});
  }
}

kernel void kernel_reflection(sampler_t sampler, read_only image3d_t img, __global uint* buffer, ulong scalar)
{
  size_t tid = get_global_id(0);

  void (^kernelBlock)(void) = ^{ block_reflection(scalar, buffer, img, sampler); };

  queue_t def_q = get_default_queue();
  ndrange_t ndrange = ndrange_1D(1);
  if( scalar > 0 ){
    int enq_res = enqueue_kernel(def_q, CLK_ENQUEUE_FLAGS_WAIT_KERNEL, ndrange, kernelBlock);
    if(enq_res != CLK_SUCCESS) { buffer[2] = 1; }
  }
}
