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A mathematical concept that can be used to express position, direction or velocity and which can simplify or outright trivialise spatial problems.

3
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For the sad weary soul a decade from now who stumbles upon this question wishing for it to be answered: void main(void){ vec3 p1 = mix(tcPosition[0], tcPosition[3], gl_TessCoord.x);//may have to …
answered Nov 22 '14 by pdel
2
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I want to extend this to work on quads: layout(quads, ...) in and add the tcPosition[3] vector but I don't really know how to get the same behavior with the fourth vertex. …
asked Nov 21 '14 by pdel