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ocl: avoid unnecessary loading/initializing OpenCL subsystem

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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)
This commit is contained in:
Alexander Alekhin
2017-11-24 17:34:02 +03:00
parent 92be112388
commit 0ed3209b00
20 changed files with 114 additions and 64 deletions
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modules/imgproc/src/clahe.cpp
+1 -1
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@@ -360,7 +360,7 @@ namespace
CV_Assert( _src.type() == CV_8UC1 || _src.type() == CV_16UC1 );
#ifdef HAVE_OPENCL
bool useOpenCL = cv::ocl::useOpenCL() && _src.isUMat() && _src.dims()<=2 && _src.type() == CV_8UC1;
bool useOpenCL = cv::ocl::isOpenCLActivated() && _src.isUMat() && _src.dims()<=2 && _src.type() == CV_8UC1;
#endif
int histSize = _src.type() == CV_8UC1 ? 256 : 65536;