[GRASS-dev] Re: [GRASS GIS] #937: cairo driver: d.legend colors all broken

[GRASS GIS]

#937: cairo driver: d.legend colors all broken
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  Reporter:  hamish   |       Owner:  grass-dev at lists.osgeo.org
      Type:  defect   |      Status:  closed                   
  Priority:  major    |   Milestone:  7.0.0                    
 Component:  Display  |     Version:  svn-trunk                
Resolution:  fixed    |    Keywords:  cairo, d.legend          
  Platform:  Linux    |         Cpu:  x86-64                   
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Comment (by glynn):

 Replying to [comment:5 hamish]:

 > just out of curiosity, how do the .bmp, .ppm, and SGi's .rgb differ, in
 that IIUC they are all just raw binary dumps of width height r1g1b1 r2g2b2
 r3g3b3 ...

 PPM has a variable length header (where the header length is determined by
 parsing), followed by 24-bpp RGB data. BMP has a variable-length header
 (where the length is stored in the header) followed by data in a variety
 of possible formats. RGB has a fixed-size (512 byte) header followed by
 data in a variety of possible formats.

 PPM was ruled out because it doesn't support 32-bpp data. BMP was the next
 candidate due to having the documentation immediately to hand. Any format
 which supports raw 32-bpp RGBA data (with suitable alignment) would work.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/937#comment:6>
GRASS GIS <http://grass.osgeo.org>