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OpenCL: core support for FP16, more channel orders

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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
This commit is contained in:
Joe Howse
2021-06-21 00:46:32 -03:00
parent 735a79ae83
commit 6a3d925a47
4 changed files with 44 additions and 12 deletions
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modules/core/include/opencv2/core/opencl/opencl_info.hpp
+7
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@@ -144,6 +144,10 @@ static void dumpOpenCLInformation()
DUMP_MESSAGE_STDOUT(" Double support = " << doubleSupportStr);
DUMP_CONFIG_PROPERTY("cv_ocl_current_haveDoubleSupport", device.doubleFPConfig() > 0);
const char* halfSupportStr = device.halfFPConfig() > 0 ? "Yes" : "No";
DUMP_MESSAGE_STDOUT(" Half support = " << halfSupportStr);
DUMP_CONFIG_PROPERTY("cv_ocl_current_haveHalfSupport", device.halfFPConfig() > 0);
const char* isUnifiedMemoryStr = device.hostUnifiedMemory() ? "Yes" : "No";
DUMP_MESSAGE_STDOUT(" Host unified memory = " << isUnifiedMemoryStr);
DUMP_CONFIG_PROPERTY("cv_ocl_current_hostUnifiedMemory", device.hostUnifiedMemory());
@@ -191,6 +195,9 @@ static void dumpOpenCLInformation()
DUMP_MESSAGE_STDOUT(" Preferred vector width double = " << device.preferredVectorWidthDouble());
DUMP_CONFIG_PROPERTY("cv_ocl_current_preferredVectorWidthDouble", device.preferredVectorWidthDouble());
DUMP_MESSAGE_STDOUT(" Preferred vector width half = " << device.preferredVectorWidthHalf());
DUMP_CONFIG_PROPERTY("cv_ocl_current_preferredVectorWidthHalf", device.preferredVectorWidthHalf());
}
catch (...)
{