7 // From section 7.1 (Built-In Language Variables) of the GLSL 4.10
10 // It is also a compilation error to redeclare the [gl_PerVertex]
11 // block more than once...
13 // This appears to be a clarification to the behaviour established for
14 // gl_PerVertex by GLSL 1.50, therefore we test it using GLSL version
20 layout(triangle_strip, max_vertices = 3) out;