dot product bump mapping

[helda]

Hello

How can i do dotproduct bump mapping without register combiners?
My problem is register combiners is an extension from nvidia, when i use another card than a geforce, than i would have a problem in my opinion.

thank you for reply

helda

[knackered]

Look at these extensions:- http://oss.sgi.com/projects/ogl-sample/registry/ARB/texture_env_combine.txt http://oss.sgi.com/projects/ogl-sample/registry/ARB/texture_env_crossbar.txt http://oss.sgi.com/projects/ogl-sample/registry/ARB/texture_env_dot3.txt

They basically combine to give you the register combiner functionality but for all cards that support OpenGL 1.3.

[Julien Cayzac]

Originally posted by knackered:
Look at these extensions:- http://oss.sgi.com/projects/ogl-sample/registry/ARB/texture_env_combine.txt http://oss.sgi.com/projects/ogl-sample/registry/ARB/texture_env_crossbar.txt http://oss.sgi.com/projects/ogl-sample/registry/ARB/texture_env_dot3.txt

They basically combine to give you the register combiner functionality but for all cards that support OpenGL 1.3.

Wrong. ARB_texture_env_crossbar has been promoted only since 1.4. http://www.opengl.org/discussion_boards/ubb/biggrin.gif

Julien.