Shaders are also very isolated programs in that they're not allowed to communicate with each other; the only communication they have is via their inputs and outputs.
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Components of a vector can be accessed via vec.xwhere x is the first component of the vector. You can use .x, .y, .z and .w to access their first, second, third and fourth component respectively. GLSL also allows you to use rgba for colors or stpq for texture coordinates, accessing the same components.
Moana is such an amazing character. She's brave; she is so empowered. She knows what she wants, and she's not afraid to get it, and I think that's something that I can relate to as well. I just love watching how she goes along in this wonderful movie and grows as a person and helps her culture along the way.