#version 450 #extension GL_ARB_separate_shader_objects : enable layout (vertices = 3) out; void main() { gl_TessLevelOuter[0] = 4.0; gl_TessLevelOuter[1] = 4.0; gl_TessLevelOuter[2] = 4.0; gl_TessLevelOuter[3] = 4.0; gl_TessLevelInner[0] = 4.0; gl_TessLevelInner[1] = 4.0; }