Currently, the OpenCL Runtime Loader checks for platforms that support the ICD extension by calling clGetExtensionFunctionAddressForPlatform, which is an OpenCL 1.2 function. Consider:
Check for OpenCL 1.2 before calling clGetExtensionFunctionAddressForPlatform, in which case only OpenCL 1.2 and newer platforms will be enumerated.
Check for the ICD extension in the platform extension string.
Currently, the OpenCL Runtime Loader checks for platforms that support the ICD extension by calling
clGetExtensionFunctionAddressForPlatform, which is an OpenCL 1.2 function. Consider:clGetExtensionFunctionAddressForPlatform, in which case only OpenCL 1.2 and newer platforms will be enumerated.