Incorrect precision/bit count listed for integers

[sukus21]

The page for Precision Issues claims that:

• lowp is at least an 9 bit value
• mediump is at least a 16 bit value
• highp is at least a 32 bit value

This is true for some implementations, but according to the GLSL ES 1.0 spec, section 4.5, the actual guarantees are:

• lowp : Can represent integers from -256 to 256
• mediump: Can represent integers from -1024 to 1024
• highp: Can represent integers from -65536 to 65536

These are not off by one errors, those are the ranges listed in the spec. Integers in GLSL ES 1.0 are NOT guaranteed to be two's complement either.

I understand how this error occoured, because the ranges listed ARE the correct ranges for GLSL ES 3.0, used for WebGL 2 (see the GLSL ES 3.0 spec, section 4.5).

Bit counts are in general unreliable in GLSL ES 1.0, as it isn't explicitly stated anywhere in the specs how wide any given type is. This also applies to floats, but I feel it is less of an issue there.