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cuda - update npp calls to use the new NppStreamContext API if available by cudawarped · Pull Request #26245 · opencv/opencv · GitHub
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cuda - update npp calls to use the new NppStreamContext API if available
Oct 3, 2024
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cuda - update npp calls to use the new NppStreamContext API if available #26245
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Update calls to Nvidia's NPP library to use the newer NppStreamContext API introduced in CUDA 10.1 (release notes)
Although this was introduced in CUDA 10.1 at that point not all of the functions either had a
_Ctx
version which took aNppStreamContext
or an implementation present in the NPP library. Therefore in this PR theUSE_NPP_STREAM_CTX
flag which selects the new API is only enabled for versions of NPP >= 12205 (the version included with CUDA toolkit 12.4) which I have verified as working. Currently the only function called inside OpenCV which does not work with the new API isnppiEvenLevelsHost_32s_Ctx
which doesn't have an implementation inside nppist.lib or libnppist.so as of CUDA 12.6.Tested locally on Ubuntu 20.04 with both CUDA toolkits 12.3 and 12.4.
Adds changes discussed in opencv/opencv_contrib#3338 to all Npp functions called by OpenCV.
Fixes opencv/opencv_contrib#3798
Pull Request Readiness Checklist
See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request
Patch to opencv_extra has the same branch name.