Doesn't seem like there's a way to bypass the need for default values in their API, and since their versions doesn't seem to be reliable enough to know whether maxDualSourceDrawBuffersEXT exists. This way it's default initialized to 0 which is fine for Cemu.
The previous implementation used an std::stringstream to concatenate
the generated random string.
The new one uses a simple preallocated std::string, as the size of the
output is already known - it is the length parameter.
It also uses std::generate_n() instead of an explicit loop, making the
code more concise and potentially faster, as no calls to
std::string::operator+= are needed.
Calling GenerateRandomString(1'000'000) with the std::stringstream-based
implementation allocated 16 times, for a total of 3'173'516 bytes.
The new one cuts this down to 4 allocs, for a total of 1'076'864 bytes.
