A few things were missing in internal format queries
- GL_RGB and GL_RGBA are renderable formats
- Integer types have no multisampling
- If bufSize is 0, we should not write to the params output

Change-Id: If6ba2f28b368e780eca8e89ef033deacf9cc523b
Reviewed-on: https://swiftshader-review.googlesource.com/4752Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>