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Code Issues Releases Activity

avutil/hcontext_cuda: Remove unnecessary stream synchronisation

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Similarly to the previous changes, we don't need to synchronise
after a memcpy to device memory. On the other hand, we need to
keep synchronising after a copy to host memory, otherwise there's
no guarantee that subsequent host reads will return valid data.
This commit is contained in:
Philip Langdale 2019-03-30 10:56:49 -07:00
parent 5d90d1e36e
commit 52d8f35b14
1 changed files with 0 additions and 4 deletions
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4
libavutil/hwcontext_cuda.c
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@ -268,10 +268,6 @@ static int cuda_transfer_data_to(AVHWFramesContext *ctx, AVFrame *dst,
goto exit;
}
ret = CHECK_CU(cu->cuStreamSynchronize(hwctx->stream));
if (ret < 0)
goto exit;
exit:
CHECK_CU(cu->cuCtxPopCurrent(&dummy));