topic Try to place the content of in OpenCL* for CPU

Problem:Unable to pass structure to a opencl kernel

明_王_ — Mon, 10 Nov 2014 09:11:07 GMT

Unable to pass structure to a opencl kernel?

main.h

typedef struct _Point

{

unsigned int x;

unsigned int y;

}mPoint;

kernel.cl:

#include"main.h"

__kernel void Fun(__global struct mPoint* p)

{

unsigned int tid = get_local_id(0);

p->x=tid;

}

The error returned by clBuildProgram():

clBuild failed:-11

Compilation started

1:3:38: warning: declaration of 'struct mPoint' will not be visible outside of t

his function

1:6:3: error: incomplete definition of type 'struct mPoint'

1:3:38: note: forward declaration of 'struct mPoint'

Compilation failed

I don't known where is the mistake.

Thanks.

You should change __kernel

Alexey_B_Intel1 — Mon, 10 Nov 2014 09:29:52 GMT

You should change __kernel void Fun(__global struct mPoint* p) definition.

The best way to fix your issue is to remove 'struct':

__kernel void Fun(__global mPoint* p)

明_王_ — Tue, 11 Nov 2014 02:12:09 GMT

I removed 'struct', however, another question emerged:

error: must use 'struct' tag to refer to type 'mPoint'
__kernel void Fun(__global mPoint* p)
^
struct

Try to place the content of

Robert_I_Intel — Tue, 11 Nov 2014 03:10:10 GMT

Try to place the content of the main.h header file inside your kernel.cl file: I think what is going on is that when you compile your program, the compiler does not see your header file. Use -I option to the compiler (pass it to clBuildProgram) to point to the right directory where your header file will reside.