Tut 03, shader position offset, original.

copied from cpu position offset part.
Tut 03: Opengl's Moving Triangle, shader position offset.
Tut 03, shader calc offset, original.

from shader position offset.
Tut 03: Opengl's moving triangle, shader calc offset.
Tut 03, fragment change color, original.

from shader calc offset.
Tut 03: Opengl's Moving Triangle, fragment change color.
Tut 04: Objects at Rest, orthographic cube.
Tut 04, shader perspective, original.

from orthographic cube.
Tut 04: Objects at Rest, ShaderPerspective.
Tut 04, matric perspective, original.

from manual shader perspective.
Tut 04: Objects at Rest, matrix perspective.