Provide interoperability between opencl and direct3d 10.
This is a platform extension which defines a simple mechanism through which the Khronos OpenCL installable client driver loader (ICD Loader) may expose multiple separate vendor installable client drivers (Vendor ICDs) for OpenCL. An application written against the ICD Loader will be able to access all cl_platform_ids exposed by all vendor implementations with the ICD Loader acting as a demultiplexor. If this extension is supported by an implementation, the string cl_khr_icd will be present in the CL_PLATFORM_EXTENSIONS string described in the table of allowed values for param_name for clGetDeviceInfo(3clc).
If the cl_khr_icd extension is supported, then the clIcdGetPlatformIDsKHR(3clc) function is enabled.
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EXTENSION(3clc), clIcdGetPlatformIDsKHR(3clc)
The Khronos Group
Copyright © 2007-2011 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and/or associated documentation files (the "Materials"), to deal in the Materials without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Materials, and to permit persons to whom the Materials are furnished to do so, subject to the condition that this copyright notice and permission notice shall be included in all copies or substantial portions of the Materials.
OpenCL Specification
page 113, section 9.12 - OpenCL Installable Client Driver (ICD)