[GRASS-dev] [GRASS GIS] #3600: m.nviz.image doesn't produce any output

[GRASS GIS]

#3600: m.nviz.image doesn't produce any output
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  Reporter:  guano        |      Owner:  grass-dev@…
      Type:  defect       |     Status:  new
  Priority:  normal       |  Milestone:
 Component:  Default      |    Version:  7.0.4
Resolution:               |   Keywords:
       CPU:  Unspecified  |   Platform:  MacOSX
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Comment (by hcho):

 Replying to [comment:58 hellik]:
 > Replying to [comment:54 hcho]:
 > > Only Windows defines double buffering; that's why Linux works without
 buffer swapping because it has only one buffer. BUT, glGetError() still
 returns GL_INVALID_OPERATION according to https://www.khronos.org/registry
 /OpenGL-Refpages/gl4/html/glReadBuffer.xhtml. Probably, that's why some
 Linux drivers and MacOS don't work at all.
 > >
 > > Windows is also broken because nviz draws to the back buffer, but it
 reads from the front buffer without buffer swapping.
 >
 > tested with
 >
 > {{{
 > GRASS version: 7.5.svn
 > GRASS SVN revision: r72969
 > Build date: 2018-07-10
 > Build platform: x86_64-w64-mingw32
 > GDAL: 2.2.4
 > PROJ.4: 4.9.3
 > GEOS: 3.5.0
 > SQLite: 3.17.0
 > Python: 2.7.14
 > wxPython: 2.8.12.1
 > Platform: Windows-10-10.0.17134 (OSGeo4W)
 > }}}
 >


 r72974+ has double buffering. Earlier version was incomplete without
 buffer swapping for Windows. Please try r72974+ later.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3600#comment:60>
GRASS GIS <https://grass.osgeo.org>