Render Quality
--------------

With MIXLIGHTS, FAST_RGB_ALLOC, and TXTMODE you can control the final
quality of the renderer (including the choice of colors) and also the startup
speed of Crystal Space. The effects of these flags are also dependent on the
pixel width of your display (current 8-bit or 16-bit).

The following table describes all the (useful) possibilities.
'Display' is the width of the display (8-bits or 16-bits).
'MIX' is the setting for MIXLIGHTS.
'RGB' is the setting for FAST_RGB_ALLOC.
'TXTMODE' is the setting for TXTMODE.
'T' is the number of precalculated tables needed in world file.
    The possible tables are: 
    	table_fast_xxx
	table_white8
	table_alpha
'TSpeed' is the speed of the texture cache. From very good to very bad,
    here are the ratings: 'fast', 'good', 'fair', 'slow', and 'bad'.

Note that all modes with TXTMODE equal to '24bit' are not supported yet.

Display MIX      RGB TXTMODE T TSpeed Remarks
-----------------------------------------------------------------------------
8-bit   nocolor  yes global  - fast   no colored lights
        nocolor  no  global  2 fast   no colored lights, accurate RGB mapping
        fast_wrb yes global  - good   red, blue lights
	fast_wrb no  global  3 good   red, blue lights, accurate RGB mapping
        fast_wrg yes global  - good   red, green lights
	fast_wrg no  global  3 good   red, green lights, accurate RGB mapping
        fast_wbg yes global  - good   blue, green lights
	fast_wbg no  global  3 good   blue, green lights, accurate RGB mapping
        true_rgb yes global  - fair   RGB lights
        true_rgb yes private - slow   RGB lights, texture colors more accurate
        true_rgb yes 24bit   - fair   RGB lights, texture colors more accurate
16-bit  nocolor  yes global  - good   no colored lights
        true_rgb yes global  - good   RGB lights
	true_rgb yes private - bad    RGB lights, texture colors more accurate
	true_rgb yes 24bit   - fair   RGB lights, texture colors more accurate

