6 // Check that a bvec4 can't be used as a varying in GLSL 1.10.
8 // From section 4.3.6 ("Varying") of the GLSL 1.10 spec:
9 // The varying qualifier can be used only with the data types
10 // float, vec2, vec3, vec4, mat2, mat3, and mat4, or arrays of
11 // these. Structures cannot be varying.
19 gl_FragColor = vec4(foo);