How to set SDL_Surface's saturation,lighteness,balance..?

lifecat9 · Post by **lifecat9** » Wed Sep 10, 2008 12:58 pm

How to set the SDL_Surface color's saturation,lighteness,balance and contrast value like Photoshop in PSP???

1.use SDL_Image read a Image to a SDL_Surface.
2.modify SDL_Surface's color saturation(or lighteness,balance,contrast) just like Photoshop..

I want to write a PSP Photoshop software.

Is anyone help me?

Noko · Post by **Noko** » Wed Sep 10, 2008 3:44 pm

http://www.google.com/search?hl=en&q=RGB+to+HSL

second link

lifecat9 · Post by **lifecat9** » Thu Sep 11, 2008 6:00 pm

Noko wrote:http://www.google.com/search?hl=en&q=RGB+to+HSL

second link

thinks.