Question about x264 using --opencl acceleration

[abdamon]

Here is my input: --opencl --opencl-decvice 0
the information x264 give me is:
x264[info]:OpenCL acceleration enabled with NVIDIA Corporation Quadro FX 1800
x264[info]:Compiling OpenCL kernels...
x264[warning]:OpenCL: kernel build errors written to x264_kernel_build_log.txt

the info in x264_kernel_build_log.txt is :
(0) Error: unsupported operation

[MasterNobody]

OpenCL kernels compilation depend on used drivers for video card so make sure that you use up to date drivers for your video card and that they have OpenCL support.

[abdamon]

OpenCL kernels compilation depend on used drivers for video card so make sure that you use up to date drivers for your video card and that they have OpenCL support.

I can sure the Drivers of my Nvidia card is up to date;and of cause it supports opencl, becuase I can run opencl Demo through the Nvidia card;