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Alexander Alekhin 0ed3209b00 ocl: avoid unnecessary loading/initializing OpenCL subsystem
If there are no OpenCL/UMat methods calls from application.

OpenCL subsystem is initialized:
- haveOpenCL() is called from application
- useOpenCL() is called from application
- access to OpenCL allocator: UMat is created (empty UMat is ignored) or UMat <-> Mat conversions are called

Don't call OpenCL functions if OPENCV_OPENCL_RUNTIME=disabled
(independent from OpenCL linkage type)
2017-11-28 14:02:42 +03:00
2017-11-07 17:24:48 +03:00
2014-02-26 17:46:52 +08:00
2016-01-18 10:11:01 +05:30
2017-09-13 17:58:34 +03:00

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