Jump to content
  • Advertisement
Sign in to follow this  
maximus-dev

OpenGL Normal Mapping vs Normal Coordinates

This topic is 2994 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 currently working with OpenGL ES 1.1 and using the DrawElements convention along with Vertex, Normal, Texture Coordinate, and Index arrays.

I recently came across this while researching the idea of using Normal/Bump mapping:
http://iphone-3d-programming.labs.oreilly.com/ch08.html

I can generate an Object space normal map already from my 3D modeler, but what I'm not completely clear on is whether or not the Normal coordinates array will be even necessary any longer if implementing this kind of thing, or will Lighting + Color Texture Combined with Normal map via the DOT3_RGB option be all that is required?

Thanks everyone,
-Jeremiah

Share this post


Link to post
Share on other sites
Advertisement
From what research I've done since this post, what I'm looking for is information on DOT3 Lighting. It appears that normal vectors are not necessary, but I'm having difficulty finding a straightforward example of it for OpenGL ES. Still hoping to get a nudge in the right direction here...

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!