What version of GLSL is used in the iPhone(s)?

Question

I know that iPhone uses OpenGL ES 2.0, but I don\'t know the version of the underlying language GLSL. Is it 1.3, 1.4, 2.0, or other?

Answer 1

printf("GLSL Version = %s\n", glGetString(GL_SHADING_LANGUAGE_VERSION));
printf("GL Version = %s\n", glGetString(GL_VERSION));

On IOS 5.1, this prints out:

GL Version = OpenGL ES 2.0 APPLE

GLSL Version = OpenGL ES GLSL ES 1.0