[refactored] OpenCL: core support for more formats, including float16#20336
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opencv-pushbot merged 1 commit intoopencv:masterfrom Jul 1, 2021
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* Support cl_image conversion for CL_HALF_FLOAT (float16) * Support cl_image conversion for additional channel orders: CL_A, CL_INTENSITY, CL_LUMINANCE, CL_RG, CL_RA * Comment on why cl_image conversion is unsupported for CL_RGB * Predict optimal vector width for float16 * ocl::kernelToStr: support float16 * ocl::Device::halfFPConfig: drop artificial requirement for OpenCL version >= 1.2. Even OpenCL 1.0 supports the underlying config property, CL_DEVICE_HALF_FP_CONFIG. * dumpOpenCLInformation: provide info on OpenCL half-float support and preferred half-float vector width * randu: support default range [-1.0, 1.0] for float16 * TestBase::warmup: support float16
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This pull request is refactored from #20288, to remove incomplete/problematic changes to GEMM.
Now, the changes include the following:
Support cl_image conversion for CL_HALF_FLOAT (float16)
Support cl_image conversion for additional channel orders:
CL_A, CL_INTENSITY, CL_LUMINANCE, CL_RG, CL_RA
Comment on why cl_image conversion is unsupported for CL_RGB
Predict optimal vector width for float16
ocl::kernelToStr: support float16
ocl::Device::halfFPConfig: drop artificial requirement for OpenCL
version >= 1.2. Even OpenCL 1.0 supports the underlying config
property, CL_DEVICE_HALF_FP_CONFIG.
dumpOpenCLInformation: provide info on OpenCL half-float support
and preferred half-float vector width
randu: support default range [-1.0, 1.0] for float16