[Public WebGL] WebGL/ESSL version strings

[Florian Bösch <pyalot@gmail.com>]

WebGL implementations report back the VERSION and SHADING_LANGUAGE_VERSION getParameter strings.

VERSION

It's my understanding there are only two valid values for the parameter VERSION: WebGL 1.0 and WebGL 2.0 at the time of this writing (afaik minor spec revision versions aren't reported). However, these are versions that are reported in the wild:

• WebGL 0.9
• WebGL 0.91
• WebGL 0.92
• WebGL 0.93
• WebGL 0.94
• WebGL 0.95
• WebGL 1.0

SHADING_LANGUAGE_VERSION

It's my Understanding that there are only two valid values for the parameter SHADING_LANGUAGE_VERSION: WebGL GLSL ES 1.0 and WebGL GLSL ES 2.0. However, these are values observed in the wild:

• WebGL GLSL ES 0.9
• WebGL GLSL ES 0.91
• WebGL GLSL ES 0.92
• WebGL GLSL ES 0.93
• WebGL GLSL ES 0.94
• WebGL GLSL ES 0.95
• WebGL GLSL ES 1.0

Request for clarification

I would like to inquire off the Khronos WebGL WG the following questions for clarification:

• Is it correct that the only two valid versions to report here are 1.0 and 2.0?
• If so (or not) should there be language in the specifications to clarify this?
• Is it correct that official members to the Khronos WebGL WG are required to adhere to the standards set forth by the group and should not willfully deviate from the standard?