1 # From the ARB_tessellation_shader spec (Section 2.14.2):
3 # Linking will fail if the program object contains objects to form a
4 # tessellation control shader (see section 2.X.1), and
6 # * the program contains no objects to form a vertex shader;
12 GL_ARB_tessellation_shader
15 [tessellation control shader]
16 #extension GL_ARB_tessellation_shader: require
17 layout(vertices = 3) out;
20 gl_TessLevelOuter = float[4](1.0, 1.0, 1.0, 0.0);
21 gl_TessLevelInner = float[2](0.0, 0.0);
28 gl_FragColor = vec4(0);