/* Get first platform that matches a string.
*/
cl_platform_id get_platform(const char *platform_string)
{
cl_platform_id *platforms = NULL;
cl_platform_id platform;
int i;
int num;
char *name;
int len;
num = get_platforms(&platforms);
if (num < 1)
return NULL;
platform = NULL;
name = NULL;
len = 0;
for (i = 0; i < num; i++)
{
get_platform_info(platforms[i], CL_PLATFORM_NAME, &name, &len);
if (strstr(name, platform_string))
{
platform = platforms[i];
break;
}
}
if (name != NULL)
free(name);
if (platforms != NULL)
free(platforms);
return platform;
}
void cl_initilize() {
cl_int errcode;
cl_platform_id platform[10];
get_platforms(platform);
cl_device_id devices[10];
int platform_index = 0;
get_devices(platform[platform_index], devices);
int device_index = 0;
show_device_info(devices[device_index]);
context = clCreateContext(NULL, 1, &devices[device_index], NULL, NULL, &errcode);
checkError(clCreateContext);
queue = clCreateCommandQueue (context, devices[device_index], CL_QUEUE_PROFILING_ENABLE, &errcode); // третий параметр - свойства
checkError(clCreateCommandQueue);
char* source = "\n\
__kernel void sum(__global const uchar *src, __global uchar *trg, int m, int n)\n\
{\n\
int i = get_global_id(0);\n\
int j = get_global_id(1);\n\
int SIdx = (i*n + (n-1 - j)) ;\n\
int DIdx = (j*m + i) ;\n\
if (i > m) return;\
if (j > n) return;\
for (int c = 0; c < 3; c++)\n\
trg[DIdx*3+c] = src[SIdx*3+c];\n\
}";
