                           =========================
                           = PTC bump logo example =
                           =========================


Overview
--------

This is a quick little logo i have written up for PTC. It is designed for use
as a splash screen at program startup. 



Description
-----------

This effect is a simple bump map with few little twists. Firstly, it uses
three lights in total: one red, one green and one blue. However, it differs
from your typical quick hack r,g,b bump maps in that i have worked hard to
get a good motion in which the three lights remain tight together therefore
can sum up to other colors.

The motion used is basically an elliptical path which shrinks, then expands
again. The r,g,b lights orbit around the "cluster" center x,y which is on the
ellipse path. This keeps the lights close to each other so they can blend
nicely - nothing looks worse imho, than when you see the seperate r,g,b lights
that the effect is made out of.



Extras
------

You can specify what output format to use on the command line: "logo [format]"
Here is a list of supported output formats:

    ARGB8888    // 32bit
    ABGR8888
    BGRA8888
    RGBA8888
      RGB888    // 24bit
      BGR888
      RGB565    // 16bit
      BGR565
    ARGB1555    // 15bit
    ABGR1555
  FAKEMODE1A    // 320x600 18bit
  FAKEMODE1B
  FAKEMODE1C
  FAKEMODE2A    // 320x400 14bit
  FAKEMODE2B
  FAKEMODE2C
  FAKEMODE3A    // 320x400 12bit
  FAKEMODE3B
  FAKEMODE3C
       GREY8    
      RGB332    

If you specify a format that is not available, then the logo program will
fall back onto a fuzzy 32bit modeset.





cheers
--
Gaffer [xtatic]
gaffer@bigfoot.com

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