screen:fillRect() does not work with alpha value on v0.16

[Mrdjack]

i use lua player v0.16 with 1.5 PSP firmware.

when i do a screen:fillRect(0, 0, 100, 100, Color.new(0, 255, 0, 128)), the screen is fill with a green, but the alpha value isn't correct (full alpha).

but when i do a fillRect with half alpha on an image, and i blit to screen, here the result is good.

why screen:fillRect() with non full alpha doesn't work ?

thank for your help and sorry for my english.

++

[romero126]

Alpha is used in a 0-1 ... so
if you want it half alpha use 0.5 as the paramater.

Otherwise anything over 1. is fully Visible and 0 is invisible.

[Mrdjack]

thank for your help romero126
++

[Shine]

why screen:fillRect() with non full alpha doesn't work ?

The screen doesn't support alpha, only images, because Lua Player uses only the source for alpha blitting. And alpha values are integers from 0 to 255. But you can use the 3D functions for setting the alpha blitting mode yourself.