OpenGL 3D Game Tutorial 3: Rendering with Index Buffers
2,305LWJGL tutorial series on how to create a 3D Java game with OpenGL!
This week we learn a more efficient way to render our quad using an index buffer.
Full code available here: https://github.com/TheThinMatrix/OpenGL-Tutorial-3
LWJGL Wiki: http://lwjgl.org/wiki/index.php?title=Main_Page
Common Problems
- Make sure that you use the new vertex positions array - it is different from last episode!
-In the loadToVao() method the last parameter of the RawModel constructor has now changed to "indices.length" instead of "positions.length/3". Make sure you've made this change!
-Creating the display must be the first thing you do in the main method. Don't try initializing the RawModel first.
If you get the " Cannot use offsets when Element Array Buffer Object is disabled" error, check the following:
-Check that you are calling the "bindIndicesVBO()" from the "loadToVao()" method.
-Don't unbind the index buffer anywhere! Each VAO has one special slot for an index buffer, and unbinding the index buffer will remove it from that slot.
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