Jump to content
  • Advertisement

Archived

This topic is now archived and is closed to further replies.

madu

specular not working in LH

This topic is 5467 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 am trying to transform OpenGL from a right-handed coordinate system into a left-handed coordinate system like in DirectX. So I reversed the signs in the perspective matrix for z and w, and reversed the order in which vertices are passed. This seems to work, lighting works as normal, but the specular light doesn''t. What am I doing wrong?

Share this post


Link to post
Share on other sites
Advertisement
Are your polys textured? if so you need to add the line

glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR);

Otherwise the texture hides the specular highlight. If (as in Microsoft GL) these symbolic constants are undefined you can define them thus:


#ifndef SEPARATE_SPECULAR_COLOR
#define GL_SEPARATE_SPECULAR_COLOR 0x81FA
#endif

#ifndef GL_LIGHT_MODEL_COLOR_CONTROL
#define GL_LIGHT_MODEL_COLOR_CONTROL 0x81F8
#endif

Share this post


Link to post
Share on other sites

  • 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!