OpenGL 2.0 introduced programmable shaders, but it still supports the legacy fixed function pipeline. usage of glBegin/glEnd and the matrix stack). Most desktop Linux OpenGL applications are written using the legacy OpenGL 1.x fixed function pipeline (e.g. Finally, porting OpenGL 1.0 or OpenGL ES 1.1 applications to OpenGL ES 2.0 requires a rewrite to replace fixed function API usage with programmable shaders. OpenGL 2.0 application that only uses programmable shaders is possible to port OpenGL ES 2.0, but may still need some work due to, e.g., differences in the shading language versions.

OpenGL 1.0 applications can be ported to OpenGL ES 1.1, but need changes if they are using some of the removed APIs. OpenGL 1.0 applications work with OpenGL 2.0 but not vice versa. The following diagram summarizes these changes for major OpenGL versions. OpenGL ES 2.0 is based on OpenGL 2.0 with the fixed function API removed.Īll versions and variants of OpenGL are not directly compatible, so a certain amount of changes are needed when moving applications from one variant to another. In contrast, OpenGL ES 1.1 is based on OpenGL 1.x with some APIs removed and fixed point integer support added. OpenGL 2.0 adds programmable shaders, but fixed function pipeline API is still supported for backward compatibility. OpenGL 1.0 has fixed shaders and fixed function API for using them. The following diagram shows the relationship of the major OpenGL versions and variants. OpenGL ES is a subset of the full OpenGL standard, and therefore the two APIs are not directly compatible. Hardware accelerated OpenGL ES 1.1 and 2.0 are available on Maemo devices beginning with the N900. OpenGL ES is an API that allows programmers to draw 3D graphics on mobile and embedded devices.

For OpenGL ES 2.0