What steps will reproduce the problem?
1. Run the Orthographic or Perspective example in Chapter04.
2. Rotate the hollow pipe to see the inner top face.
3. The face is always black irrespective of its angle. The attached photos show
the issue where the top face is black, as compared to the bottom face.
What is the expected output? What do you see instead?
The inner top face should change color as its angle to the light changes.
What version of the product are you using? On what operating system?
Ubuntu 10.04
Please provide any additional information below.
The normals of the top inside face are specified incorrectly in both the
programs. The normals specified are
innerBatch.Normal3f(0.0f, 1.0f, 0.0f);
The comment preceding this is also incorrect
// Normal points up Y axis
The normal for the top inner face should point down.
Changing the normals to point down fixes the problem.
// Normal points down Y axis
innerBatch.Normal3f(0.0f, -1.0f, 0.0f);
Original issue reported on code.google.com by nag.ra...@gmail.com on 31 Aug 2012 at 8:02
Original issue reported on code.google.com by
nag.ra...@gmail.comon 31 Aug 2012 at 8:02Attachments: