OpenGL ES Variability Choices

This section provides information about some OpenGL ES options.

Variant: ScreenPlay and non-ScreenPlay. Target audience: Device creators.

• Which OpenGL ES API versions are supported?
  On some smartphones, no OpenGL ES support is available. On others a particular OpenGL ES API is available, or possibly multiple versions are available.
• What API extensions are supported?
  OpenGL ES implementations can expose implementation-specific functionality by use of the standard extension mechanisms. The implementer controls this by modifying the files glextplatform.h and gl2extplatform.h for 1.x and 2.0 respectively.
• Using Legacy vs. System-Wide EGL Headers
  From Symbian OS v9.4 onwards, EGL is delivered as a standalone library within a separate component, the EGL Collection. EGL is thus available for system wide use (for example, by both OpenVG and OpenGL ES). For Symbian^2, the EGL version is 1.3 and is independent of the version for OpenGL ES. For Symbian^3, the EGL version is 1.4.
• Floating Point Compiler Options
  Device creators can enable hardware floating point compiler options in their OpenGL ES implementations without risking binary incompatibility with client programs.