Khronos API Registry

The Khronos API registry contains specifications, header files, extension specifications, enumerant and function registries, and other related documentation for Khronos APIs.

The Khronos API Implementers Guide, available in HTML and PDF versions, provides guidelines for implementers of OpenGL ES, OpenVG and other API standards specified by the Khronos Group. The aim of these hints is to provide commonality between implementations to ease the logistical problems faced by developers using multiple different implementations of an API. One of the primary goals is to allow an application binary to run on top of multiple different OpenGL ES / OpenVG / EGL implementations on the same platform. Implementers are strongly urged to comply with these guidelines.

The registry is broken down into separate sections for each API. These sections include:

• EGL Registry
• OpenCL Registry
• OpenGL Registry (hosted on opengl.org)
• OpenGL ES Registry
• OpenGL SC Registry
• OpenKODE Registry
• OpenMAX AL Registry
• OpenMAX IL Registry
• OpenSL ES Registry
• OpenVG Registry
• OpenWF Registry

In addition, the header files for several of the APIs depend on the shared header file <KHR/khrplatform.h> , which defines common datatypes and calling convention macros. khrplatform.h is located in the EGL registry .