I have an OLPCGames SVG problem

[Mike C. Fletcher]

Kent Loobey wrote:
> On Saturday 02 February 2008 06:51:39 Mike C. Fletcher wrote:
>   
...
> At this point my problem seems to be one of color.  I have since learned that 
> the colors of my original images were not distinguishable.  I seem to 
> remember somewhere that you all are using a 16 bit palette.  It could be that 
> I am making images that are 32 bit and when it maps them to 16 bit they 
> change.  I say this because I made some new images with more colors in them 
> and they now display with distorted color in svgspritetest.activity.
>   
32 bit to 16 bit shouldn't cause any reasonably distinct colours to
disappear into one another, 16 bit gives you 32 shades for each
component, unless your graphics were really-pale-ivory on white they
should still show up.
> The colors are just wrong, i.e., Red shows up as blue for example.  This leads 
> me to believe that all my images have been displayed but that I can't see 
> some of them because they have been mapped to the same color as the 
> background.
>   

That sounds like a problem in the array-handling code.  The SVGSprite
has probably only been tested on AMD64 machines (i.e. my workstation
here (though I thought I'd run on the XO to test it)), could be we're
seeing a problem with the translation code on 32-bit machines.  There's
also an explicit colour rotation going on for handling text on certain
versions of pycairo/pygtk, but that shouldn't affect the rsvg renderer.

Can you also tell me what environment you're running under?  Desktop
32-bit Linux in either jhbuild or ubuntu packages is what I'm assuming.
> My initial images were 48x48 pixels.  The activity.svg image included with 
> svgspritetest.activity is 45x45.
>   
Okay, size isn't the problem, then.  If you can send me a problem file
I'll try to figure out what's going wrong.

Take care,
Mike

-- 
________________________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://www.vrplumber.com
  http://blog.vrplumber.com