Am 11.06.2013 um 09:27 schrieb Henri Verbeet:

We always want to use '.' as decimal separator in GLSL, instead of the locale
specific one. Reported on IRC.

I think this should be added as a code comment above shader_glsl_ftoa, I don't think the reason why we need our own conversion function is obvious.

The ARB shader backend will need this as well, but I can take care of this. What external software triggers this behavior?

> case WINED3D_DATA_FLOAT:
> - sprintf(register_name, "%.8e", *(const float *)reg->immconst_data);
> + shader_glsl_ftoa(*(const float *)reg->immconst_data, register_name);
> break;

shader_glsl_ftoa doesn't handle inf or nan. I assume that's intentional because they would only trigger a parser error.