OPENCL 警告：不兼容的指针类型将 'float __global[16]' 传递给 '__global float4 * 类型的参数

Question

I am defining a structure in C++, built a vector in a loop and created its buffer using clCreateBuffer() function, which is then passed to my CL kernel. My kernel code calls funcA where the buffer is passed as an argument. I am then using the buffer and calling funcB giving array as an argument.

    typedef struct a {
        float array[16];
        unsigned int id;
    } BUFFER_TYPE;

    float RD_INLINE funcB(__global float4* m)
    {
      ..
    }

    bool RD_INLINE funcA(__global BUFFER_TYPE* buffer)
   {
      ..
      float scale = funcB(buffer[0].array);
      ..
   }

I am getting " warning: incompatible pointer types passing 'float __global[16]' to parameter of type '__global float4 *'". How do I resolve this? How can I typecast here?

Answer 1

For float4 the array should be of 4 elements: float array[4] . You could use cl_float4 from CL/cl_platform.h which will define that properly for you. See more about OpenCL vector types here .

If the warning still persists then you will need to define your struct in cl file too using float4 instead of float array[4] or cl_float4 .