OpenGL ES Reference Pages
The reference pages for OpenGL ES 3.1 include complete descriptions of all OpenGL ES commands and functions contained in the OpenGL ES 3.1 API and Shading Language Specifications.
The reference pages for OpenGL ES 3.0 include complete descriptions of all OpenGL ES commands and functions contained in the OpenGL ES 3.0 API and Shading Language Specifications.
The OpenGL ES 2.0 reference pages include descriptions of all OpenGL ES commands contained in the OpenGL ES 2.0 Specification.
OpenGL ES Reference Cards
Several quick reference guides are available in PDF format from the links below. The quick reference guides are fold-out annotated lists of the functions included in OpenGL, along with their parameters and other useful information.
The OpenGL ES Registry, hosted outside of the SDK, contains the formal Specifications for OpenGL ES and the OpenGL ES Shading Language. Specifications are the authoritative documents about how OpenGL ES is intended to work. They are also the most difficult to read, being written primarily for OpenGL ES implementers, not developers using OpenGL ES; so you may find the reference pages combined with tutorials to be a better choice.
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