5位RGB（0,31,0）至16位RGB（0,255,0）

Question

So I've been starting DS programming, and I notice that to draw a pixel the color must be a RGB(0, 31, 0). Is there any way to change that to something like RGB(0, 255, 0)?

Answer 1

If you have a green-value g with a range of 0-255, you can convert it to NintendoDS's 0-31 range by using g*31/255 . If you are asking us if you can actually do something to make your NintendoDS display a range of 0-255 for each channel the answer is no, but you could use dithering (search-engine it).

Answer 2

5 bit rgb : 31 = 8 bit rgb : 255

so 8 bit rgb = (5 bit rgb * 255 / 31)

Example:

5 bit RGB = 12,3,21

8 bit R = (12 * 255) / 31 = 99
      G = (3 * 255) / 31  = 25
      B = (21 * 255) / 31 = 172

PS: I think you mean "5 bit RGB to 8 bit RGB" in your title.