Method copyTo

deps/opencv/modules/core/src/opengl_interop.cpp:265–282

    }

    void CudaResource::copyTo(void* dst, size_t dpitch, size_t width, size_t height, cudaStream_t stream)
    {
        CV_DbgAssert( resource_ != 0 );

        GraphicsMapHolder h(&resource_, stream);
        (void) h;

        void* src;
        size_t size;
        cudaSafeCall( cudaGraphicsResourceGetMappedPointer(&src, &size, resource_) );

        CV_DbgAssert( width * height == size );

        if (stream == 0)
            cudaSafeCall( cudaMemcpy2D(dst, dpitch, src, width, width, height, cudaMemcpyDeviceToDevice) );
        else
            cudaSafeCall( cudaMemcpy2DAsync(dst, dpitch, src, width, width, height, cudaMemcpyDeviceToDevice, stream) );
    }

    void* CudaResource::map(cudaStream_t stream)
    {