Gray Scales

[KawaGeo]

Here is a code to display gray scales for reference.

Code: Select all

-- grayscales.lua by Geo Massar, 2005

dofile "LPut01.lua"

green = Color.new(0, 255, 0)

bg = Image.createEmpty(480,272)    -- background
bg:caption(152,28, "Gray Scales", green, 2)
bg:print(2,262, "by Geo Massar, 2005 (aka KawaGeo)", green)

bg:fillRect(111,71, 258,130, green)
for i = 0, 3 do
  mark = 111 + 64*i
  bg:drawLine(mark,200, mark,207, green)
end
bg:drawLine(368,200, 368,207, green) -- last mark
bg:print(109,210, "0",   green)
bg:print(169,210, "64",  green)
bg:print(229,210, "128", green)
bg:print(293,210, "192", green)
bg:print(358,210, "255", green)

for x = 0, 255 do
  gray = Color.new(x,x,x)
  bg:drawLine(112+x,72, 112+x,199, gray)
end
bg:save "grayscales.tga"

screen:blit(0,0, bg)
screen.flip()

while true do
  screen.waitVblankStart()
end

You can get the library file, LPut01.lua, at my webpage.

Screenshot:


NOTE: With the current version of LP, the display shows only 32 scales. There will be full 256 scales in the future version. Right, Shine?

[Jim]

NOTE: With the current version of LP, the display shows only 32 scales. There will be full 256 scales in the future version. Right, Shine?

The PSP can only show 32 grey levels in 16bit colour mode. Is LUA 16 or 32bit?

Jim

[Shine]

Is LUA 16 or 32bit?

16 bit: http://forums.ps2dev.org/viewtopic.php?t=3157