There is currently no runtime way to disable WebGL's error limit (the limit at which it says "too many errors" and stops showing them). This is sometimes problematic for WebGL development, as even though getError still works, it becomes impossible to see the detailed error message.

--disable-gl-error-limit is supposed to disable the limit on the number of service-side GL errors printed to stdout (although broken:  bug 910812 ). It could be applied to WebGL as well, or there could just be a separate flag or devtools option. (Devtools option seems best to me.)

When the option is added, the "too many errors" message should also tell users how to disable the limit.
https://cs.chromium.org/chromium/src/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc?l=7334&rcl=e13e548536440ee7c9104ccaa0f6190438a01605