141014-0002 First step in Texture Rendering!

This is a complete program that used texture rendering to draw a 3D
earth. (Core codes in CardboardRenderer3.java) I have figured out the
whole procedure about Texture Rendering.

And now I am creating functions to make this process much easier. Also
currently Texture Rendering uses a different OpenGL Shader Script than
original ones, so I may also solve compatibility issues between
"Rendering using Random Color" and Texture Rendering.

We had best use both color rendering and texture rendering, because
although color rendering is not so useful, it's much less
resource-demanding than texture.

After all these tasks, we still have one more basic OpenGL knowledge to
learn -- how to create and use light sources.

By Zhongzhi Yu (Mark)