Lighting + Camera Angle

Graphics and GPU Programming Programming

Started by MatrixCubed August 06, 2003 04:56 AM

3 comments, last by MatrixCubed 20 years, 8 months ago

199

Author

August 06, 2003 04:56 AM

Hey all, I''m having a lighting problem... in a nutshell, when the camera is angled toward the ground, the scene lighting looks good. When the camera is angled upward, the scene lighting gets darker. Any screenshots or particular code I should post to clarify? Ideas? Thanks! MatrixCubed
http://MatrixCubed.cjb.net

[ Odyssey Project ]

Airo

197

August 06, 2003 05:04 AM

make sure, you position your light / camera in the correct order.
It sounds like your light is moving together with your camera.

greets,
Alan

Corrail

133

August 06, 2003 07:00 AM

Maybe you set the Light position after the camera? If you call glLightfv(GL_LIGHTx, GL_POSITION, ...) the position the passed is multiplied with the current Modelview Matrix. So if you first set the camera the light is multiplied with the camera-matrix.

Corrail
corrail@gmx.at
ICQ#59184081

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LupusUmbrus

122

August 06, 2003 10:20 AM

I had a very similar problem occuring recently. Check your lighting normals, mine had been inverted, causing what you describe.