add vec2
rework opengl buffers to combine redundant data
cull backfaces on filled wireframe
remove unused lighting from pure texture shader
cleanup and also remove unused attributes from textured-lit shader
move alpha into vertex shader for textured-cubemap-lit shader
get rid of camel case variable names in shader structs
make starbase4 top spokes not have a gap, up the sphere resolution
rename the solid color shader to be more inline with the new convention of single-color-lit