OpenGL.GL.APPLE.element_array

OpenGL extension APPLE.element_array

This module customises the behaviour of the OpenGL.raw.GL.APPLE.element_array to provide a more Python-friendly API

Overview (from the spec)

This extension provides facilities to improve DrawElements style vertex indices submission performance by allowing index arrays. Using this extension these arrays can be contained inside a vertex array range and thus pulled directly by the graphics processor, avoiding the CPU overhead of touching the index data.

This extension is most useful when used in conjunction with the APPLE_vertex_array_range extension. APPLE_vertex_array_range provides an interface for storing vertex array data. In cases where large amounts of vertex data are in use, the index data used to construct primitives (typically as passed to the GL through DrawElements) can impose a significant bandwidth burden. APPLE_element_array allows the application to specify independent arrays of elements, which can then be cached using APPLE_vertex_array_range. In effect this creates a more orthogonal interface for both vertex indices and data.

The official definition of this extension is available here: http://www.opengl.org/registry/specs/APPLE/element_array.txt