[GRASS-user] [bug #3041] nviz max resolution ppm image dump

[William Hargrove]

Hamish, Glynn:

The 6.1.0 version of nviz dumps high res ppms perfectly after I comment 
out the off-screen section.

So the bug that remains in the subsequent versions must come from code 
changes introduced since then.

Bill H.

Glynn Clements wrote:

>Hamish wrote:
>
>  
>
>>>Note that setting the environment variables:
>>>
>>>	GRASS_NO_GLX_PBUFFERS
>>>	GRASS_NO_GLX_PIXMAPS
>>>
>>>will disable use of these features, in case of problems with your
>>>OpenGL setup (libraries or X server). Their values don't matter, only
>>>whether or not they are set.
>>>      
>>>
>>These should be added to lib/init/variables.html
>>    
>>
>
>I'll do that.
>
>  
>
>>Setting those make no difference to this bug however:
>>
>>#with GLX
>>G63 > nviz elevation.10m
>>    
>>
>
>  
>
>>% Creating PBuffer Using GLX 1.3
>>Create PixMap Using GLX 1.1
>>    
>>
>
>  
>
>>Final Assembled Image will be 1929 x 2048
>>    
>>
>
>  
>
>>Assembling Tiles
>>pnmcat: EOF / read error reading a row of pixels
>>    
>>
>
>  
>
>>#without GLX
>>G63> export GRASS_NO_GLX_PBUFFERS=TRUE
>>G63> export GRASS_NO_GLX_PIXMAPS=TRUE
>>G63> nviz elevation.10m
>>    
>>
>
>  
>
>>% Final Assembled Image will be 1904 x 2048
>>    
>>
>
>  
>
>>Assembling Tiles
>>pnmcat: Zero byte allocation
>>    
>>
>
>Well, it appears to make *some* difference, i.e. you're getting a
>different error message.
>
>Does removing the following from nviz2.2_script help?
>
>	# Set the cancel function for drawing
>	Nset_cancel_func update
>
>  
>


-- 
William W. Hargrove                     hnw at fire.esd.ornl.gov
Environmental Sciences Division         (865) 241-2748
Oak Ridge National Laboratory           (865) 574-4665 (fax)
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