Sign in to follow this  

How do I make HDR textures?

This topic is 2312 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

I'm having a hard time figuring out how to create HDR textures with GIMP. Seeing as I can't save .exr files I'm getting the feeling it's impossible. I've tried picturenaut but it seems to be made for photography and I have no idea how to use it for what I need. I have a skybox with stars and all I want to do is increase their intensity a little beyond the standard RGB8 texture so I can make them shine using my game's bloom effect. I could change the luminescence value in my bloom shader but then the planets would start to glow...

Share this post


Link to post
Share on other sites
[quote name='SteveDeFacto' timestamp='1313681960' post='4850805']
I'm having a hard time figuring out how to create HDR textures with GIMP. Seeing as I can't save .exr files I'm getting the feeling it's impossible. I've tried picturenaut but it seems to be made for photography and I have no idea how to use it for what I need. I have a skybox with stars and all I want to do is increase their intensity a little beyond the standard RGB8 texture so I can make them shine using my game's bloom effect. I could change the luminescence value in my bloom shader but then the planets would start to glow...
[/quote]
You can't, the standard gimp implementation currently support only 8 bit channels. A common , simple trick is to use the alpha channel as glow mask (luminance = 1 + alpha * MAX_LUMI_VALUE)

Share this post


Link to post
Share on other sites

This topic is 2312 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

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