Attribute list in eglCreateContext

Question

I\'m looking at the android ndk opengl es example. Anyway, it has the lines in there:

int[] attrib_list = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL10.EGL_NONE };         


        

Answer 1

Check the spec, page 43:

attrib list may be NULL or empty (first attribute is EGL_NONE), in which case attributes assume their default values as described below.

EGL_CONTEXT_CLIENT_VERSION determines which version of an OpenGL ES context to create. An attribute value of 1 specifies creation of an OpenGL ES 1.x context. An attribute value of 2 specifies creation of an OpenGL ES 2.x context. The default value for EGL_CONTEXT_CLIENT_VERSION is 1.