Use quaternions for rotation instead of matrixes?

[Robert42]

for the model matrix this makes sense:

• less multiplications on the CPU and the vertex shader GPU
• less bytes to transfer to the uniform
• better precision

Don't forget about theese:

• [ ] camera_orientation
• [ ] For the scene itself

[Robert42]

For more informations about this, take a look at http://stackoverflow.com/questions/15704096/why-do-i-need-to-convert-quaternion-to-4x4-matrix-when-uploading-to-the-shaders But for now I am going to use matrices only