OpenCL 외부파일 쉽게 컴파일하기

OpenCL에서 cl파일을 컴파일하기 위해선

파일을 string으로 읽어와야한다.

왜 이렇게 만들었지;

#include를 이용하면 간단하게 할 수 있다.

 

        char source2[512];

        char* ptr_src2 = source2;

        sprintf(source2, "#include \"%s\"\n",filename);

       

        program = clCreateProgramWithSource(context, 1, &ptr_src2, 0, &err);

 

        char build_option2[512] = "-I . ";

        err = clBuildProgram(program, 0, NULL, build_option2, NULL, NULL);

 

중요한점은 build_option에 "-I . "를 추가해줘야 include가 제대로 된다.

cl_program my_program(const char* filename, const cl_context context, const cl_device_id device_id, char* build_option=NULL)

{

        cl_program program;                 // compute program

        long program_size;

        int err; 

 

        char source2[512];

        char* ptr_src2 = source2;

        sprintf(source2, "#include \"%s\"\n",filename);

       

        // Create the compute program from the source buffer

        program = clCreateProgramWithSource(context, 1, &ptr_src2, 0, &err);

 

        if (!program)

        {

               printf("Error: Failed to create compute program!\n");

               exit(1);

        }

        LOGF("program : %d\n",(int)program);

 

        // Build the program executable

        // http://www.khronos.org/registry/cl/sdk/1.0/docs/man/xhtml/clBuildProgram.html

        char build_option2[512] = "-I . ";

        if(build_option)

               strcat(build_option2,build_option);         

        err = clBuildProgram(program, 0, NULL, build_option2, NULL, NULL);

 

        size_t len;

        const int size = 2048*16;

        char buffer[size];

 

        clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_LOG, sizeof(buffer), buffer, &len);

       

        if(len>size)

               printf("'Build Log buffer size' is too Small! %d %d\n",size,len);

        else

               printf("%s\n", buffer);

        if (err != CL_SUCCESS)

        {

               printf("Error[%d]: Failed to build program executable!\n",err);

               //exit(1);

        }

        LOGF("program : %d\n",(int)program);

 

        return program;

}