Re: OSMesa for MXE Octave, help wanted

[Andreas Weber]

Am 15.02.2015 um 21:52 schrieb John W. Eaton:
> On 02/15/2015 11:16 AM, John W. Eaton wrote:
>> On 02/15/2015 09:21 AM, John W. Eaton wrote:
>>
>>> Because the scons setup for osmesa doesn't seem to handle cross
>>> compiling, or at least I don't know how to make it do that.
>>
>> OK, I think I found a way to make it work properly with scons.  I'll
>> check in a change soon.
> 
> I checked in my changes and have built a Windows version of 3.9.1+.
> Printing a figure as a pdf file with 'visible' set to 'off' resulted in
> the following warning:
> 
> Mesa warning: couldn't open dxtn.dll, software DXTn
> compression/decompression unavailable
> warning: gl2ps-renderer::draw: empty feedback buffer and/or nothing else
> to print
> warning: called from
>     __opengl_print__ at line 171 column 7
>     print at line 431 column 14
> 
> and the resulting pdf file appears to be a blank page.

Same on my system with Windows XP in a virtualbox. I tried different
scons parameters and also to build MESA opengl32.dll but without a
difference when it comes to OSMesa.

My last idea would be to build the OSMesa examples (from
git://anongit.freedesktop.org/mesa/demos) in MXE-Octave to check if the
generated osmesa.dll and libosmesa.a is okay.

Andy