part4.c
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#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#ifdef __APPLE__
#include <OpenCL/opencl.h>
#else
#include <CL/cl.h>
#endif
#define KERNEL "part4.cl"
int main() {
cl_platform_id platform;
cl_device_id device;
cl_context context;
cl_program program;
FILE* programHandle;
size_t programSize, kernelSourceSize;
char *programBuffer, *kernelSource;
// get first available platform and gpu and create context
clGetPlatformIDs(1, &platform, NULL);
clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, 1, &device, NULL);
context = clCreateContext(NULL, 1, &device, NULL, NULL, NULL);
// get size of kernel source
programHandle = fopen(KERNEL, "r");
fseek(programHandle, 0, SEEK_END);
programSize = ftell(programHandle);
rewind(programHandle);
// read kernel source into buffer
programBuffer = (char*) malloc(programSize + 1);
programBuffer[programSize] = '\0';
assert (programSize == fread(programBuffer, sizeof(char), programSize, programHandle));
fclose(programHandle);
// create program from buffer
program = clCreateProgramWithSource(context, 1,
(const char**) &programBuffer, &programSize, NULL);
free(programBuffer);
// read kernel source back in from program to check
clGetProgramInfo(program, CL_PROGRAM_SOURCE, 0, NULL, &kernelSourceSize);
kernelSource = (char*) malloc(kernelSourceSize);
clGetProgramInfo(program, CL_PROGRAM_SOURCE, kernelSourceSize, kernelSource, NULL);
printf("\nKernel source:\n\n%s\n", kernelSource);
free(kernelSource);
clReleaseContext(context);
return 0;
}
// vim: set ft=c ts=4 sw=4: