Sign in to follow this  
gohkgohk

how to use directdraw to change picture brightness

Recommended Posts

If you want to make the whole image brighter or darker you can do this by using the gamma controls:
Using DirectDraw's Gamma Controls to Perform a Fade

If you want to change the brightness of just one sprite there is no easy way in directdraw. You have to do it yourself:lock the surface read the rgb values, convert them to HSL, change the brightness, convert the new values back to rgb-space and write them to your surface (or a new one).

If you need a faster method you have to use direct3d or opengl.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this