All current texture parameters are integer, so just pass them through to
glTexParameteri().

Change-Id: Ic4042b26b31194916af7814cabf2eb0d22c76ecb
Reviewed-on: https://swiftshader-review.googlesource.com/2710Tested-by: Greg Hartman <ghartman@google.com>
Reviewed-by: Greg Hartman <ghartman@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>