Re: [Discuss-gnuradio] gr-fosphor : New RTSA-like visualization block for GNURadio using GPU acceleration

[Alexandru Csete]

On Sun, Oct 27, 2013 at 10:49 AM, Sylvain Munaut <address@hidden> wrote:
> Hi,
>
>> ImportError: 
>> /home/alc/sdr/pybombs/runtime/lib/libgnuradio-fosphor-3.7.0git.so.0.0.0:
>> undefined symbol: clCreateFromGLTexture
>
> Yes, I've been made aware of the issue but don't really know what to
> do about it ...
>
> Basically Ubuntu installs the OpenCL ICD from NVidia which is OpenCL
> 1.1 compliant. But instead of using the NVidia supplied headers, it
> installs some standard headers from Khronos that define the OPENCL_1_2
> symbol and so fosphor compiles for a OpenCL 1.2 API ...
>
> Edit gr-fosphor/lib/fosphor/cl_platform.h and remove the #define
> clCreateFromGLTexture2D clCreateFromGLTexture

Thanks for the info - this workaround resolved my issue. Now it works
and looks great.

>
>> I have not installed glfw3 as it appears to be an optional component,
>> is that true?
>
> Technically yes, it's now optional for the GR block, you just don't
> get the GLFW version of the block installed.

Does it mean that the glfw version can be used without gr-qtgui or gr-wxgui?

> But without it you also can't run the benchmark and small test program
> to debug issues if it doesn't work out of the box.

Ok, I'll try with glfw3 installed. I'm curious about the benchmark too.

Alex