[Alephmodular-devel] CDisplay and color tables

[Br'fin <br...@ma...>]

I'm poking through things (slowly, I know,) and it seems like Marathon 
has two main functions for dealing with color tables.

The first is assert_world_color_table who's primary responsibility is 
setting the color table of the GDevice shared between the screen and 
the offscreen buffer. Or to put it another way, this seems to be 
responsible for setting up the offscreen color table. And it only does 
real work when in 8 bit mode.

The other function is animate_screen_clut. Which is responsible for 
altering the screen. This can occur in any bit depth as things like 
gamma correction and fades are implemented through it.

I'm thinking of implementing these two functions on CDisplay as

void CDisplay::set_buffer_clut(color_table *)

Which sets up the drawing clut for when in 8 bit mode. But which is 
ignored the rest of the time. (No, it doesn't assert)

void CDisplay::adjust_screen_clut(color_table *)

Which immediately alters the screen by using the provided color table. 
In 8-bit mode this is also when the color table is expressed onto the 
screen.

Thoughts or comments?

-Jeremy Parsons